S. Srinivasan, Technip Offshore, Inc., Houston, TX

Save this PDF as:
 WORD  PNG  TXT  JPG

Size: px
Start display at page:

Download "S. Srinivasan, Technip Offshore, Inc., Houston, TX"

Transcription

1 9 th ASCE Specialty Conerence on Probabilistic Mechanics and Structural Reliability PROBABILISTIC FAILURE PREDICTION OF FILAMENT-WOUND GLASS-FIBER Abstract REINFORCED COMPOSITE TUBES UNDER BIAXIAL LOADING S. Srinivasan, Technip Oshore, Inc., Houston, TX B. Bhattacharya, M. ASCE, University o Delaware, Newark, DE Filament-wound, iber-reinorced polymer-matrix composite laminate tubes have been used or a wide range o engineering applications, owing to their high speciic stiness, strength and superior corrosion resistance. Leakage ailure o composite tubes under multiaxial loading has been an important design concern. Extensive analytical and experimental investigations have recently been reported on leakage ailure o composite tubes. These investigations developed deterministic estimates o leakage ailure or dierent combinations o axial load and internal pressure. Eects o uncertainties in material properties and laminate construction on leakage ailure need to be studied in detail. In this study; probabilistic analyses are perormed to predict irst-ply ailure o angle-ply composite laminate tubes under combined internal pressure and axial loading. Randomness is considered in (1) elastic moduli along principal lamina directions; (2) uniaxial matrix-dominated strengths o each lamina; and (3) local thickness variation o individual plies. The probabilistic inite element analysis is perormed using the ANSYS TM program and Latin hypercube sampling. Inluence o each basic variable on irst-ply ailure is evaluated. These are compared with experimental results available in the literature. Introduction Fiber-reinorced composite laminate tubes have been extensively used in the aerospace, automotive, and petroleum industries. One o the concerns in the use o these tubes is leakage o contents when the tubes are subjected to various combinations o internal pressure and axial tension. Leakage ailure is primarily attributed to matrix-dominated cracking in individual plies o the composite laminate tubes. A complex process o initiation and growth o these cracks through the tube wall provides a passage or luid to leak through the wall. Stresses in individual plies o the composite laminate tube are a unction o the stiness o the ibers and matrix, volume raction o ibers, ply angles and ply thicknesses, laminate lay-up, and applied loads among others. Analytical and experimental studies on leakage ailure o composite laminate tubes have been perormed by Soden et al. (1993), Wang et al. (1997) etc. These studies ocused primarily on deterministic mechanics and on phenomenological development o composite tube leakage ailure methods. Accurate prediction o leakage ailure o composite laminate tubes, however, should involve rigorous analytical models coupled with a detailed appreciation o the random aspects o the structure. The stochastic nature o response o composite laminates due to inherent uncertainties in mechanical properties at the iber/matrix scale, ply scale, and the structural scale is well Srinivasan, S., and Bhattacharya, B. 1

2 recognized (e.g., Chamis and Shiao, 1993). Probabilistic estimates o initial and system ailure o composite laminate plates and tubes (Mahadevan et al., 1997, Yushanov and Bogdanovich, 1998, and Frangopol and Recek, 2003) have been obtained. Probabilistic analyses o iber-reinorced composite laminates using the stochastic inite element method (SFEM) have been used to obtain reliability estimates o structural response, system ailure (Hong et al., 1995) and buckling and irst ply ailure (Lin et al., 1998). Comparisons o reliability estimates and computed ailure probabilities with experiments on composite laminates are limited in the literature. Furthermore, the studies do not consider local uncertainties in ply thickness in the plane o the composite laminate. While these may not be as prevalent in laminates constructed using prepegs, ilament wet winding could potentially induce such uncertainties in the ply and laminate thickness. In this study the eect o uncertainties in geometric and material parameters in the manuacture o ilament-wound composite laminate tubes on matrix-dominated irst ply ailure is examined. The basic variables include uncertainties in local variations o individual ply thicknesses, elastic moduli o a unidirectional ply, and ailure strains. The basic variables are chosen rom observations reported in the work by Srinivasan (1996). Uncertainties in ply iber angles were not measured in that work and not considered in the study. Furthermore, material nonlinearity and damage mechanics are beyond the scope o the paper. Linear inite element analysis and Latin hypercube sampling (LHS) are used or the probabilistic calculations. Method o Analysis Composite tube lamination, geometry and loading The composite laminate tube is made by ilament wet winding o E-glass ibers and epoxy resin. The lay-up is [±55 o ]2. The iber angle is measured rom the longitudinal axis o the tube. The nominal values o inner diameter and wall thickness o the tube are 29 mm and 2.03 mm, respectively. The tube is subjected to two combinations o internal pressure and axial tension. They are hoop to axial stress ratios o 0:1 (denoted as 0h:1a) and 1.86:1 (denoted as 1.86h:1a). One end o the tube is restrained and a uniorm axial load is applied at the other end. Finite element modeling The probabilistic analysis o the iber-composite laminate tube is perormed using linear analysis and the ANSYS TM inite element program (ANSYS, 2003). Eight-node isoparametric shell elements (SHELL99) with ive degrees o reedom per node, i.e., three displacements and two rotations, are used or structural discretization. The elements are C o continuous, with Mindlin-type displacement ield assumptions which include transverse shear deormations. The element is deined using corner layer thicknesses, layer material direction angles, and orthotropic material properties. The inite element model, load and constraints are shown in Figs. 1 and 2. Regions with local thickness variations are depicted with dierent colors in Fig. 1. Srinivasan, S., and Bhattacharya, B. 2

3 Fig. 1. Finite element model Constitutive equations and ailure criteria Fig. 2. Loads and constraints The stress-strain expression or a iber composite ply, in material coordinates (1,2) can be written as σ' i = ' ij 1 Q ε j, τ = Q2 γ tj (1) ti ' ij where ' Q 1ij is the in-plane stiness matrix o the ply, ' Q 2ij is the transverse shear stiness matrix o the ply and {σ'} = {σ 1, σ 2, τ 12 } T, {τ t '} = {τ 13, τ 23 } T, {ε'} = {ε 1, ε 2, γ 12 } T, and {γ t '} = { γ 13, γ 23 } T are the in-plane and out-o-plane stresses and strains in the material coordinate system. Here 1 and 2 indicate iber direction and ply transverse directions, respectively. The inite element laminate constitutive ormulation ollows the well-known Classical Lamination Theory (Jones, 1975) (CLT) with appropriate modiications or ply thickness variations. Further details are discussed in the ANSYS Theoretical Manual (ANSYS, 2003). In this study Hashin s (Hashin, 1980) criterion or matrix-dominated ailure o unidirectional iber-composites expressed in terms o strains is used. The perormance index or matrix-dominated ailure o a unidirectional iber-composite due to a tensile strain transverse to the iber is summarized as 2 2 ε2 γ F = + 12 ε2 γ12, (2) where 2 ε is the uniaxial ailure strain transverse to the iber and 12 γ is the uniaxial inplane shear ailure strain. Failure in any ply o a composite laminate is said to occur when the perormance index F 1 in Eq. (2). Srinivasan, S., and Bhattacharya, B. 3

4 Probabilistic modeling and simulation procedure Four sets o basic variables were chosen or evaluating irst ply ailure o the composite laminate tubes. They are individual ply and total tube wall thickness, axial and circumerential locations o local thickness variations in the tube, and elastic moduli and ailure strains o a unidirectional E-glass/epoxy ply. As noted beore, these were chosen based on ad-hoc observations in the work o Srinivasan (1996). The statistics o ply thicknesses, moduli and ailure strain are shown in Table 1. The elastic moduli and ailure strains basic variables do not vary spatially. Note that the plies are numbered sequentially rom the inner most ply at the internal diameter (Ply 1) towards the outside o the tube (Ply 4). The total area exhibiting local thickness variations is assumed to be a constant 5% o the total surace area o the tube and always constitutes six regions o equal area. The centroids o these regions ollow a 2D conditional Poisson process thinned so that no two regions overlap. Random Var. Distribution Mean Stdev Ply 1 thickness Trunc Gauss 0.51 mm mm Ply 2 thickness Trunc Gauss 0.51 mm 0.1 mm Ply 3 thickness Trunc Gauss 0.51 mm 0.1 mm Wall thickness Trunc. Gauss 2.03 mm 0.20 mm E 11 Gauss 45.0 GPa 2.25 GPa E 22 Gauss Gpa 1.3 Gpa G 12 Gauss 5.85 Gpa 0.59 Gpa Weibull Exponent 25 Char value ε 2 Min. value γ 12 Weibull Exponent 25 Char value 0.05 Min. value Table 1. Probability distribution unctions o input variables Latin hypercube sampling implemented in ANSYS (ANSYS, 2003) is used to perorm the probabilistic calculations. This is a cost eective procedure or computing probabilistic estimates o irst ply ailure o the tubes. Four dierent basic variable cases were considered: (BV1) The ply thickness variation occurs over the whole domain o the tube, (BV2) local ply thickness variation; all basic variables uncorrelated (BV3) local ply thickness variation; ailure strains are 50% correlated, and (BV4) local ply thickness variation; thickness o plies in six regions are ully correlated, ailure strains are 50% correlated. Results and Discussion Linear elastic inite element analyses were perormed using ANSYS (ANSYS, 2003) or the our basic variable cases and two load conditions described in the previous sections. The number o simulations range rom 40 or BV1 to a maximum number o 150 or BV2 and BV3. For each simulation, irst ply ailure is identiied as a irst passage o the perormance index. Perormance indices are computed at each element and the maximum perormance index in each ply over the whole domain o the tube was Srinivasan, S., and Bhattacharya, B. 4

5 identiied. Probability density unctions (PDF s) o irst ply ailure computed rom the maximum perormance index o all our plies or all cases are shown in Figs. 3 and 4. In Fig. 3, the dotted line indicates the ailure axial stress determined rom experiment (Wang et al., 1997). The experimental result alls in the tail o the predicted range o occurrence o irst ply ailure. For the load ratio o 1.86h:1a, tube ailure occurred at an axial stress o 24 ksi (Wang et al., 1997). First ply ailure was not identiied in the experiments. First ply ailure prediction (0h:1a) First ply ailure prediction (186h:1a) BV1 BV2 BV BV1 BV2 BV3 BV4 0.3 BV Axial stress (ksi) Axial stress (ksi) Fig. 3. PDF or 0h:1a load case Fig. 4. PDF or 1.86h:1a load case Load Case 0h 1a Load case 1.86h: 1 a Parameter BV 1 BV2 BV3 BV4 BV 1 BV2 BV3 BV4 E E G Tlay (max) Loc (max) ε γ Table 2 Correlation coeicients o basic variables with perormance index Sensitivities o the basic variables on irst ply ailure were determined in terms o correlation coeicients with the maximum perormance index in a ply (Table 2). The inluence o ply thickness is highest or case BV1. The quantities Tlay (max) and Loc (max) in the table indicate maximum o all correlation o layer thickness or location variables with the perormance index. Srinivasan, S., and Bhattacharya, B. 5

6 Conclusions Probabilistic inite element calculations o [±55 o ]2 E-glass/epoxy composite laminate tubes were perormed to determine uncertainties in predicting matrix-dominated ailure. The ailure predictions were compared with experiments. The basic variables considered were ply thickness, local ply thickness variations, elastic moduli, and ailure strains. The results indicate that (a) the perormance index or matrix-dominated ailure is sensitive to ply thickness variations and ply transverse and shear elastic moduli (b) the perormance index is not very sensitive to locations o ply thickness variations. More rigorous probabilistic analysis that includes spatial variation o ply thicknesses, material nonlinearity, and damage mechanics may be required or predicting leakage ailure o the tubes or load ratio 1.86h:1a. Reerences ANSYS TM Release 8.0, ANSYS Inc., Canonsburg, PA. Chamis, C.C. and M.C. Shiao (1993), Probabilistic Assessment o Composite and Smart Composite Structures, Probabilistic Structural Mechanics: Advances in Structural Reliability Methods, IUTAM Symposium, San Antonio, Texas, June 7-10, 1993, Proceedings, Frangopol, D.M. and S. Recek (2003), Reliability o iber-reinorced composite laminate plates, Probabilistic Engineering Mechanics, 18, Hashin, Z. (1980), Failure criteria or Unidirectional Fiber Composites, Journal o Applied Mechanics, 47, Hong, C. S., J.S. Park, and C.G. Kim (1995), Stochastic Finite Element Method and System Reliability Analysis or Laminated Composite Structures, Recent Advanced in Solids and Structures ASME Conerence, San Francisco, CA, Nov , 1995, Proceedings PVP, 321, Jones, R. M. (1975), Mechanics o Composite Materials, McGraw-Hill, New York. Lin S. C., T.Y. Kam, and K.H. Chu (1998), Evaluation o Buckling and First-Ply Failure Probabilities o Composite Laminates, International Journal o Solids and Structures, 35(13), Mahadevan, S. X. Liu, and Q. Xiao (1997), Probabilistic progressive ailure model o composite laminates, Journal o Reinorced Plastics and Composites, 16(11), Soden, P.D., R. Kitching, P.C. Tse, Y. Tsavalas, and M. J. Hinton (1993), Inluence o Winding Angle on the Strength and Deormation o Filament Wound Composite Tubes subjected to Uniaxial and Biaxial Loads, Composites Science and Technology, 46, Srinivasan, S. (1996), Long-Term Leakage Failure In Filament-Wound Glass-Fiber Reinorced Cylindrical Composite Laminate Shells Under Combined Internal Pressure and Axial Loading, Disseration, University o Houston. Wang, S.S., S. Srinivasan, and B.W.Cole (1997), Long-Term Leakage Failure and Lie Prediction o Fiber Composite Laminate Tubing under Combined Internal Pressure and Axial Loading: Theory and Experiments, Composite Materials or Oshore Operations, Houston, Texas, October 28-30, Proceedings, Yushanov, S.P. and A.E. Bogdanovich (1998), Analytical Probabilistic Modeling o Initial Failure and Reliability o Laminated Composite Structures, International Journal o Solids and Structures, 37(7-8), Srinivasan, S., and Bhattacharya, B. 6

QUESTION BANK Composite Materials

QUESTION BANK Composite Materials QUESTION BANK Composite Materials 1. Define composite material. 2. What is the need for composite material? 3. Mention important characterits of composite material 4. Give examples for fiber material 5.

More information

Life Prediction Under Multiaxial Fatigue

Life Prediction Under Multiaxial Fatigue Lie Prediction Under Multiaxial Fatigue D. Ramesh and M.M. Mayuram Department o Mechanical Engineering Indian Institute o Technology, Madras Chennai-600 036 (India) e-mail: mayuram@iitm.ac.in ABSTRACT

More information

Chapter 6 Reliability-based design and code developments

Chapter 6 Reliability-based design and code developments Chapter 6 Reliability-based design and code developments 6. General Reliability technology has become a powerul tool or the design engineer and is widely employed in practice. Structural reliability analysis

More information

Materials and Structures. Indian Institute of Technology Kanpur

Materials and Structures. Indian Institute of Technology Kanpur Introduction to Composite Materials and Structures Nachiketa Tiwari Indian Institute of Technology Kanpur Lecture 16 Behavior of Unidirectional Composites Lecture Overview Mt Material ilaxes in unidirectional

More information

BIAXIAL STRENGTH INVESTIGATION OF CFRP COMPOSITE LAMINATES BY USING CRUCIFORM SPECIMENS

BIAXIAL STRENGTH INVESTIGATION OF CFRP COMPOSITE LAMINATES BY USING CRUCIFORM SPECIMENS BIAXIAL STRENGTH INVESTIGATION OF CFRP COMPOSITE LAMINATES BY USING CRUCIFORM SPECIMENS H. Kumazawa and T. Takatoya Airframes and Structures Group, Japan Aerospace Exploration Agency 6-13-1, Ohsawa, Mitaka,

More information

five mechanics of materials Mechanics of Materials Mechanics of Materials Knowledge Required MECHANICS MATERIALS

five mechanics of materials Mechanics of Materials Mechanics of Materials Knowledge Required MECHANICS MATERIALS RCHITECTUR STRUCTURES: FORM, BEHVIOR, ND DESIGN DR. NNE NICHOS SUMMER 2014 Mechanics o Materials MECHNICS MTERIS lecture ive mechanics o materials www.carttalk.com Mechanics o Materials 1 rchitectural

More information

ME 582 Advanced Materials Science. Chapter 2 Macromechanical Analysis of a Lamina (Part 2)

ME 582 Advanced Materials Science. Chapter 2 Macromechanical Analysis of a Lamina (Part 2) ME 582 Advanced Materials Science Chapter 2 Macromechanical Analysis of a Lamina (Part 2) Laboratory for Composite Materials Research Department of Mechanical Engineering University of South Alabama, Mobile,

More information

An investigation of the mechanical behaviour of carbon epoxy cross ply cruciform specimens under biaxial loading

An investigation of the mechanical behaviour of carbon epoxy cross ply cruciform specimens under biaxial loading An investigation of the mechanical behaviour of carbon epoxy cross ply cruciform specimens under biaxial loading A. Makris, C. Ramault, D. Van Hemelrijck Department of Mechanics of Materials and Constructions,

More information

DESIGN OF LAMINATES FOR IN-PLANE LOADING

DESIGN OF LAMINATES FOR IN-PLANE LOADING DESIGN OF LAMINATES FOR IN-PLANOADING G. VERCHERY ISMANS 44 avenue F.A. Bartholdi, 72000 Le Mans, France Georges.Verchery@m4x.org SUMMARY This work relates to the design of laminated structures primarily

More information

Reliability-Based Load and Resistance Factor Design (LRFD) Guidelines for Stiffened Panels and Grillages of Ship Structures

Reliability-Based Load and Resistance Factor Design (LRFD) Guidelines for Stiffened Panels and Grillages of Ship Structures Reliability-Based Load and Resistance actor Design (LRD) Guidelines or Stiened Panels and Grillages o Ship Structures Ibrahim A. Assakka 1, Bilal M. Ayyub 2, Paul E. Hess, III, 3 and Khaled Atua 4 ABSTRACT

More information

Enhancing Prediction Accuracy In Sift Theory

Enhancing Prediction Accuracy In Sift Theory 18 TH INTERNATIONAL CONFERENCE ON COMPOSITE MATERIALS Enhancing Prediction Accuracy In Sift Theory J. Wang 1 *, W. K. Chiu 1 Defence Science and Technology Organisation, Fishermans Bend, Australia, Department

More information

Finite element modelling of infinitely wide Angle-ply FRP. laminates

Finite element modelling of infinitely wide Angle-ply FRP. laminates www.ijaser.com 2012 by the authors Licensee IJASER- Under Creative Commons License 3.0 editorial@ijaser.com Research article ISSN 2277 9442 Finite element modelling of infinitely wide Angle-ply FRP laminates

More information

Tensile behaviour of anti-symmetric CFRP composite

Tensile behaviour of anti-symmetric CFRP composite Available online at www.sciencedirect.com Procedia Engineering 1 (211) 1865 187 ICM11 Tensile behaviour of anti-symmetric CFRP composite K. J. Wong a,b, *, X. J. Gong a, S. Aivazzadeh a, M. N. Tamin b

More information

Mechanics of Composite Materials, Second Edition Autar K Kaw University of South Florida, Tampa, USA

Mechanics of Composite Materials, Second Edition Autar K Kaw University of South Florida, Tampa, USA Mechanics of Composite Materials, Second Edition Autar K Kaw University of South Florida, Tampa, USA What programs are in PROMAL? Master Menu The master menu screen with five separate applications from

More information

Autoclave Cure Simulation of Composite Structures Applying Implicit and Explicit FE

Autoclave Cure Simulation of Composite Structures Applying Implicit and Explicit FE Autoclave Cure Simulation o Composite Structures Applying Implicit and Explicit FE Abdelal, G. F., Robotham, A., & Cantwell, W. (2013). Autoclave Cure Simulation o Composite Structures Applying Implicit

More information

EFFECT OF LAMINATION ANGLE AND THICKNESS ON ANALYSIS OF COMPOSITE PLATE UNDER THERMO MECHANICAL LOADING

EFFECT OF LAMINATION ANGLE AND THICKNESS ON ANALYSIS OF COMPOSITE PLATE UNDER THERMO MECHANICAL LOADING Journal of MECHANICAL ENGINEERING Strojnícky časopis, VOL 67 (217), NO 1, 5-22 EFFECT OF LAMINATION ANGLE AND THICKNESS ON ANALYSIS OF COMPOSITE PLATE UNDER THERMO MECHANICAL LOADING Arnab Choudhury 1,

More information

Non-conventional Glass fiber NCF composites with thermoset and thermoplastic matrices. F Talence, France Le Cheylard, France

Non-conventional Glass fiber NCF composites with thermoset and thermoplastic matrices. F Talence, France Le Cheylard, France 20 th International Conference on Composite Materials Copenhagen, 19-24th July 2015 Non-conventional Glass fiber NCF composites with thermoset and thermoplastic matrices. Thierry Lorriot 1, Jalal El Yagoubi

More information

ISSN: ISO 9001:2008 Certified International Journal of Engineering Science and Innovative Technology (IJESIT) Volume 2, Issue 4, July 2013

ISSN: ISO 9001:2008 Certified International Journal of Engineering Science and Innovative Technology (IJESIT) Volume 2, Issue 4, July 2013 Delamination Studies in Fibre-Reinforced Polymer Composites K.Kantha Rao, Dr P. Shailesh, K. Vijay Kumar 1 Associate Professor, Narasimha Reddy Engineering College Hyderabad. 2 Professor, St. Peter s Engineering

More information

Passive Damping Characteristics of Carbon Epoxy Composite Plates

Passive Damping Characteristics of Carbon Epoxy Composite Plates Journal of aterials Science and Engineering A 6 (1-2) (2016) 35-42 doi: 10.17265/2161-6213/2016.1-2.005 D DAVID PUBLISHIG Passive Damping Characteristics of Carbon Epoxy Composite Plates Dileep Kumar K

More information

Load-Carrying Capacity of Timber - Wood Fibre Insulation Board - Joints with Dowel Type Fasteners

Load-Carrying Capacity of Timber - Wood Fibre Insulation Board - Joints with Dowel Type Fasteners Load-Carrying Capacity o Timber - Wood ibre Insulation Board - Joints with Dowel Type asteners G. Gebhardt, H.J. Blaß Lehrstuhl ür Ingenieurholzbau und Baukonstruktionen Universität Karlsruhe, Germany

More information

OUTLINE DESIGN OF COLUMN BASE PLATES AND STEEL ANCHORAGE TO CONCRETE 12/21/ Introduction 2. Base plates. 3. Anchor Rods

OUTLINE DESIGN OF COLUMN BASE PLATES AND STEEL ANCHORAGE TO CONCRETE 12/21/ Introduction 2. Base plates. 3. Anchor Rods DESIGN OF COLUMN BSE PLTES ND STEEL NCHORGE TO CONCRETE OUTLINE 1. Introduction 2. Base plates a. Material b. Design using ISC Steel Design Guide Concentric axial load xial load plus moment xial load plus

More information

Module 2 Selection of Materials and Shapes. IIT, Bombay

Module 2 Selection of Materials and Shapes. IIT, Bombay Module Selection o Materials and Shapes Lecture Selection o Materials - I Instructional objectives By the end o this lecture, the student will learn (a) what is a material index and how does it help in

More information

Materials and Structures. Indian Institute of Technology Kanpur

Materials and Structures. Indian Institute of Technology Kanpur Introduction to Composite Materials and Structures Nachiketa Tiwari Indian Institute of Technology Kanpur Lecture 15 Behavior of Unidirectional Composites Lecture Overview Mt Material ilaxes in unidirectional

More information

LAMINATION THEORY FOR THE STRENGTH OF FIBER COMPOSITE MATERIALS

LAMINATION THEORY FOR THE STRENGTH OF FIBER COMPOSITE MATERIALS XXII. LAMINATION THEORY FOR THE STRENGTH OF FIBER COMPOSITE MATERIALS Introduction The lamination theory for the elastic stiffness of fiber composite materials is the backbone of the entire field, it holds

More information

MECHANICS OF MATERIALS

MECHANICS OF MATERIALS Third E CHAPTER 2 Stress MECHANICS OF MATERIALS Ferdinand P. Beer E. Russell Johnston, Jr. John T. DeWolf Lecture Notes: J. Walt Oler Texas Tech University and Strain Axial Loading Contents Stress & Strain:

More information

The Accuracy of Characteristic Length Method on Failure Load Prediction of Composite Pinned Joints

The Accuracy of Characteristic Length Method on Failure Load Prediction of Composite Pinned Joints , June 30 - July 2, 2010, London, U.K. The Accuracy of Characteristic Length Method on Failure Load Prediction of Composite Pinned Joints O. Aluko, and Q. Mazumder Abstract An analytical model was developed

More information

Explanatory Examples for Ductile Detailing of RC Buildings

Explanatory Examples for Ductile Detailing of RC Buildings Document No. :: IITK-GSD-EQ-V3.0 Final Report :: - Earthquake Codes IITK-GSD Project on Building Codes Explanatory Examples or Ductile Detailing o RC Buildings by Dr. R. K. Ingle Department o pplied echanics

More information

Malaysia Phone: ; Fax:

Malaysia Phone: ; Fax: International Conference on Mechanical Engineering Research (ICMER013), 1-3 July 013 Bukit Gambang Resort City, Kuantan, Pahang, Malaysia Organized By Faculty of Mechanical Engineering, Universiti Malaysia

More information

Bending of Simply Supported Isotropic and Composite Laminate Plates

Bending of Simply Supported Isotropic and Composite Laminate Plates Bending of Simply Supported Isotropic and Composite Laminate Plates Ernesto Gutierrez-Miravete 1 Isotropic Plates Consider simply a supported rectangular plate of isotropic material (length a, width b,

More information

2D damping predictions of fiber composite plates: Layup effects

2D damping predictions of fiber composite plates: Layup effects Available online at www.sciencedirect.com Composites Science and Technology 68 (2008) 727 733 COMPOSITES SCIENCE AND TECHNOLOGY www.elsevier.com/locate/compscitech 2D damping predictions of fiber composite

More information

BUCKLING AND POST-BUCKLING IN FILAMENT WOUND COMPOSITE TUBES UNDER TRANSVERSE COMPRESSION

BUCKLING AND POST-BUCKLING IN FILAMENT WOUND COMPOSITE TUBES UNDER TRANSVERSE COMPRESSION 2 th International Conference on Composite Materials Copenhagen, 19-24 th July 215 BUCKLING AND POST-BUCKLING IN FILAMENT WOUND COMPOSITE TUBES UNDER TRANSVERSE COMPRESSION José Humberto S. Almeida Jr.

More information

Numerical Simulation of the Behavior of Cracked Reinforced Concrete Members

Numerical Simulation of the Behavior of Cracked Reinforced Concrete Members Materials Sciences and Applications, 2014, 5, 883-894 Published Online October 2014 in SciRes. http://www.scirp.org/journal/msa http://dx.doi.org/10.4236/msa.2014.512090 Numerical Simulation o the Behavior

More information

PRELIMINARY PREDICTION OF SPECIMEN PROPERTIES CLT and 1 st order FEM analyses

PRELIMINARY PREDICTION OF SPECIMEN PROPERTIES CLT and 1 st order FEM analyses OPTIMAT BLADES Page 1 of 24 PRELIMINARY PREDICTION OF SPECIMEN PROPERTIES CLT and 1 st order FEM analyses first issue Peter Joosse CHANGE RECORD Issue/revision date pages Summary of changes draft 24-10-02

More information

SOME RESEARCH ON FINITE ELEMENT ANALYSIS OF COMPOSITE MATERIALS

SOME RESEARCH ON FINITE ELEMENT ANALYSIS OF COMPOSITE MATERIALS Mechanical Testing and Diagnosis ISSN 2247 9635, 2012 (II), Volume 3, 79-85 SOME RESEARCH ON FINITE ELEMENT ANALYSIS OF COMPOSITE MATERIALS Valeriu DULGHERU, Viorel BOSTAN, Marin GUŢU Technical University

More information

Burst strength behaviour of an aging subsea gas pipeline elbow in different external and internal corrosion-damaged positions

Burst strength behaviour of an aging subsea gas pipeline elbow in different external and internal corrosion-damaged positions csnak, 2015 Int. J. Nav. Archit. Ocean Eng. (2015) 7:435~451 http://dx.doi.org/10.1515/ijnaoe-2015-0031 pissn: 2092-6782, eissn: 2092-6790 Burst strength behaviour o an aging subsea gas pipeline elbow

More information

Modeling Hailstone Impact onto Composite Material Panel Under a Multi-axial State of Stress

Modeling Hailstone Impact onto Composite Material Panel Under a Multi-axial State of Stress Modeling Hailstone Impact onto Composite Material Panel Under a Multi-axial State of Stress Authors Marco ANGHILERI * Luigi-M L CASTELLETTI * Andrea MILANESE * and Andrea SEMBOLONI * Affiliation * Politecnico

More information

Anisotropic modeling of short fibers reinforced thermoplastics materials with LS-DYNA

Anisotropic modeling of short fibers reinforced thermoplastics materials with LS-DYNA Anisotropic modeling of short fibers reinforced thermoplastics materials with LS-DYNA Alexandre Hatt 1 1 Faurecia Automotive Seating, Simplified Limited Liability Company 1 Abstract / Summary Polymer thermoplastics

More information

Nigerian Journal of Technology, Vol. 26, No. 2, June 2007 Edelugo 37

Nigerian Journal of Technology, Vol. 26, No. 2, June 2007 Edelugo 37 Nigerian Journal of Technology, Vol. 26, No. 2, June 2007 Edelugo 37 APPLICATION OF THE REISSNERS PLATE THEORY IN THE DELAMINATION ANALYSIS OF A THREE-DIMENSIONAL, TIME- DEPENDENT, NON-LINEAR, UNI-DIRECTIONAL

More information

Using ABAQUS for reliability analysis by directional simulation

Using ABAQUS for reliability analysis by directional simulation Visit the SIMULIA Resource Center or more customer examples. Using ABAQUS or reliability analysis by directional simulation I. R. Iversen and R. C. Bell Prospect, www.prospect-s.com Abstract: Monte Carlo

More information

6.4 A cylindrical specimen of a titanium alloy having an elastic modulus of 107 GPa ( psi) and

6.4 A cylindrical specimen of a titanium alloy having an elastic modulus of 107 GPa ( psi) and 6.4 A cylindrical specimen of a titanium alloy having an elastic modulus of 107 GPa (15.5 10 6 psi) and an original diameter of 3.8 mm (0.15 in.) will experience only elastic deformation when a tensile

More information

EXPERIMENTAL AND NUMERICAL STUDY OF THE ENERGY ABSORPTION CAPACITY OF PULTRUDED COMPOSITE TUBES

EXPERIMENTAL AND NUMERICAL STUDY OF THE ENERGY ABSORPTION CAPACITY OF PULTRUDED COMPOSITE TUBES EXPERIMENTAL AND NUMERICAL STUDY OF THE ENERGY ABSORPTION CAPACITY OF PULTRUDED COMPOSITE TUBES D. Kakogiannis 1, D. Van Hemelrijck 1, J. Wastiels 1, S. Palanivelu 2, W. Van Paepegem 2, K. De Wolf 3, J.

More information

Task 1 - Material Testing of Bionax Pipe and Joints

Task 1 - Material Testing of Bionax Pipe and Joints Task 1 - Material Testing of Bionax Pipe and Joints Submitted to: Jeff Phillips Western Regional Engineer IPEX Management, Inc. 20460 Duncan Way Langley, BC, Canada V3A 7A3 Ph: 604-534-8631 Fax: 604-534-7616

More information

A synergistic damage mechanics approach to mechanical response of composite laminates with ply cracks

A synergistic damage mechanics approach to mechanical response of composite laminates with ply cracks Article A synergistic damage mechanics approach to mechanical response of composite laminates with ply cracks JOURNAL OF COMPOSITE MATERIALS Journal of Composite Materials 0(0) 7! The Author(s) 0 Reprints

More information

MECHANICS OF MATERIALS

MECHANICS OF MATERIALS 00 The McGraw-Hill Companies, Inc. All rights reserved. T Edition CHAPTER MECHANICS OF MATERIALS Ferdinand P. Beer E. Russell Johnston, Jr. John T. DeWolf Lecture Notes: J. Walt Oler Teas Tech Universit

More information

INFLUENCE OF WEB THICKNESS REDUCTION IN THE SHEAR RESISTANCE OF NON-PRISMATIC TAPERED PLATE GIRDERS

INFLUENCE OF WEB THICKNESS REDUCTION IN THE SHEAR RESISTANCE OF NON-PRISMATIC TAPERED PLATE GIRDERS INFLUENCE OF WEB THICKNESS REDUCTION IN THE SHEAR RESISTANCE OF NON-PRISMATIC TAPERED PLATE GIRDERS Paulo J. S. Cruz 1, Lúcio Lourenço 1, Hélder Quintela 2 and Manuel F. Santos 2 1 Department of Civil

More information

Analysis of asymmetric radial deformation in pipe with local wall thinning under internal pressure using strain energy method

Analysis of asymmetric radial deformation in pipe with local wall thinning under internal pressure using strain energy method Analysis of asymmetric radial deformation in pipe with local wall thinning under internal pressure using strain energy method V.M.F. Nascimento Departameto de ngenharia Mecânica TM, UFF, Rio de Janeiro

More information

Composite Materials 261 and 262

Composite Materials 261 and 262 Composite Materials 261 and 262 Stefan Hartmann 1 David Moncayo 2 1 DYNAmore GmbH, Stuttgart, Germany 2 Daimler AG, Sindelfingen, Germany 11. LS-DYNA Forum 2012, 9. - 10. Oktober 2012, Ulm 1 Outline Introduction

More information

3D NON-LINEAR FINITE ELEMENT MODELLING OF TRADITIONAL TIMBER CONNECTIONS

3D NON-LINEAR FINITE ELEMENT MODELLING OF TRADITIONAL TIMBER CONNECTIONS 3D NON-LINEAR FINITE ELEMENT MODELLING OF TRADITIONAL TIMBER CONNECTIONS Bo-Han Xu 1, Abdelhamid Bouchaïr 1, Mustapha Taaount 1 ABSTRACT: In this paper, 3D non-linear inite element models are developed

More information

MESH MODELING OF ANGLE-PLY LAMINATED COMPOSITE PLATES FOR DNS AND IPSAP

MESH MODELING OF ANGLE-PLY LAMINATED COMPOSITE PLATES FOR DNS AND IPSAP 16 TH INTERNATIONAL CONFERENCE ON COMPOSITE MATERIALS MESH MODELING OF ANGLE-PLY LAMINATED COMPOSITE PLATES FOR DNS AND IPSAP Wanil Byun*, Seung Jo Kim*, Joris Wismans** *Seoul National University, Republic

More information

Composite Laminate Modeling

Composite Laminate Modeling omposite Laminate Modeling White Paper for Femap and NX Nastran Users Venkata Bheemreddy, Ph.D., Senior Staff Mechanical Engineer Adrian Jensen, PE, Senior Staff Mechanical Engineer WHAT THIS WHITE PAPER

More information

Beam Bending Stresses and Shear Stress

Beam Bending Stresses and Shear Stress Beam Bending Stresses and Shear Stress Notation: A = name or area Aweb = area o the web o a wide lange section b = width o a rectangle = total width o material at a horizontal section c = largest distance

More information

The stiffness tailoring of megawatt wind turbine

The stiffness tailoring of megawatt wind turbine IOP Conference Series: Materials Science and Engineering OPEN ACCESS The stiffness tailoring of megawatt wind turbine To cite this article: Z M Li et al 2013 IOP Conf. Ser.: Mater. Sci. Eng. 52 052008

More information

Evaluation of Scantlings of Corrugated Transverse Watertight Bulkheads in Non-CSR Bulk Carriers Considering Hold Flooding

Evaluation of Scantlings of Corrugated Transverse Watertight Bulkheads in Non-CSR Bulk Carriers Considering Hold Flooding (1997) (Rev.1 1997) (Rev.1.1 Mar 1998 /Corr.1) (Rev. Sept 000) (Rev.3 eb 001) (Rev.4 Nov 001) (Rev.5 July 003) (Rev.6 July 004) (Rev.7 eb 006) (Corr.1 Oct 009) (Rev.8 May 010) (Rev.9 Apr 014) Evaluation

More information

Influence of residual stresses in the structural behavior of. tubular columns and arches. Nuno Rocha Cima Gomes

Influence of residual stresses in the structural behavior of. tubular columns and arches. Nuno Rocha Cima Gomes October 2014 Influence of residual stresses in the structural behavior of Abstract tubular columns and arches Nuno Rocha Cima Gomes Instituto Superior Técnico, Universidade de Lisboa, Portugal Contact:

More information

IMPACT BEHAVIOR OF COMPOSITE MATERIALS USED FOR AUTOMOTIVE INTERIOR PARTS

IMPACT BEHAVIOR OF COMPOSITE MATERIALS USED FOR AUTOMOTIVE INTERIOR PARTS 0 th HSTAM International Congress on Mechanics Chania, Crete, Greece, 5 7 May, 03 IMPACT BEHAVIOR OF COMPOSITE MATERIALS USED FOR AUTOMOTIVE INTERIOR PARTS Mariana D. Stanciu, Ioan Curtu and Ovidiu M.

More information

Prediction of Delamination Growth Behavior in a Carbon Fiber Composite Laminate Subjected to Constant Amplitude Compression-Compression Fatigue Loads

Prediction of Delamination Growth Behavior in a Carbon Fiber Composite Laminate Subjected to Constant Amplitude Compression-Compression Fatigue Loads Prediction of Delamination Growth Behavior in a Carbon Fiber Composite Laminate Subjected to Constant Amplitude Compression-Compression Fatigue Loads J. Raju 1*, D.S. Sreedhar 2, & C.M. Manjunatha 1 1

More information

A FINITE ELEMENT MODEL TO PREDICT MULTI- AXIAL STRESS-STRAIN RESPONSE OF CERAMIC MATRIX COMPOSITES WITH STRAIN INDUCED DAMAGE

A FINITE ELEMENT MODEL TO PREDICT MULTI- AXIAL STRESS-STRAIN RESPONSE OF CERAMIC MATRIX COMPOSITES WITH STRAIN INDUCED DAMAGE A FINITE ELEMENT MODEL TO PREDICT MULTI- AXIAL STRESS-STRAIN RESPONSE OF CERAMIC MATRIX COMPOSITES WITH STRAIN INDUCED DAMAGE Daxu Zhang and D. R. Hayhurst School of Mechanical, Aerospace and Civil Engineering,

More information

Nonlinear Analysis of Reinforced Concrete Shells Subjected to Impact Loads

Nonlinear Analysis of Reinforced Concrete Shells Subjected to Impact Loads Transactions of the 7 th International Conference on Structural Mechanics in Reactor Technology (SMiRT 7) Prague, Czech Republic, August 7, 00 Paper # J0- Nonlinear Analysis of Reinforced Concrete Shells

More information

PROBABILISTIC ANALYSES OF HSCT COMBUSTOR LINER COMPONENTS. Shantaram S. Pal, and P. L. N. Murthy

PROBABILISTIC ANALYSES OF HSCT COMBUSTOR LINER COMPONENTS. Shantaram S. Pal, and P. L. N. Murthy THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS Three Park Avenue, New York, N.Y. 10016-5990 99-61-447 The Society shall not be responsible for statements or opinions advanced In papers or discussion at meetings

More information

Frequency Response of Composite Laminates at Various Boundary Conditions

Frequency Response of Composite Laminates at Various Boundary Conditions International Journal of Engineering Science Invention (IJESI) ISSN (Online): 2319 6734, ISSN (Print): 2319 6726 www.ijesi.org ǁ PP.11-15 Frequency Response of Composite Laminates at Various Boundary Conditions

More information

VALIDATION of CoDA SOFTWARE for COMPOSITES SYNTHESIS AND PRELIMINARY DESIGN (or GETTING COMPOSITES USED - PART 2 )

VALIDATION of CoDA SOFTWARE for COMPOSITES SYNTHESIS AND PRELIMINARY DESIGN (or GETTING COMPOSITES USED - PART 2 ) VALIDATION of CoDA SOFTWARE for COMPOSITES SYNTHESIS AND PRELIMINARY DESIGN (or GETTING COMPOSITES USED - PART 2 ) Graham D Sims and William R Broughton Composites Design Data and Methods, Centre for Materials

More information

SANDWICH COMPOSITE BEAMS for STRUCTURAL APPLICATIONS

SANDWICH COMPOSITE BEAMS for STRUCTURAL APPLICATIONS SANDWICH COMPOSITE BEAMS for STRUCTURAL APPLICATIONS de Aguiar, José M., josemaguiar@gmail.com Faculdade de Tecnologia de São Paulo, FATEC-SP Centro Estadual de Educação Tecnológica Paula Souza. CEETEPS

More information

FINITE ELEMENT ANALYSIS OF A LAYERED COMPOSITE CYLINDER USING THE CONNECTION BETWEEN THE MACRO- AND MICROSTRUCTURE

FINITE ELEMENT ANALYSIS OF A LAYERED COMPOSITE CYLINDER USING THE CONNECTION BETWEEN THE MACRO- AND MICROSTRUCTURE FINITE ELEMENT ANALYI OF A LAYERED COMPOITE CYLINDER UING THE CONNECTION BETWEEN THE MACRO- AND MICROTRUCTURE A. zekrényes Research Assistant, Department of Applied Mechanics, Budapest University of Technology

More information

EVALUATION OF THERMAL CONDUCTIVITY IN PITCH- BASED CARBON FIBER REINFORCED PLASTICS

EVALUATION OF THERMAL CONDUCTIVITY IN PITCH- BASED CARBON FIBER REINFORCED PLASTICS 16 TH INTERNATIONA CONFERENCE ON COMPOSITE MATERIAS EVAUATION OF THERMA CONDUCTIVITY IN PITCH- BASED CARBON FIBER REINFORCED PASTICS Shinji Ogihara*, Makoto Yaaguchi**, Takahito Chiba**, Junichi Shiizu****,

More information

THE ROLE OF DELAMINATION IN NOTCHED AND UNNOTCHED TENSILE STRENGTH

THE ROLE OF DELAMINATION IN NOTCHED AND UNNOTCHED TENSILE STRENGTH THE ROLE OF DELAMINATION IN NOTCHED AND UNNOTCHED TENSILE STRENGTH M. R. Wisnom University of Bristol Advanced Composites Centre for Innovation and Science University Walk, Bristol BS8 1TR, UK M.Wisnom@bristol.ac.uk

More information

THREE DIMENSIONAL STRESS ANALYSIS OF THE T BOLT JOINT

THREE DIMENSIONAL STRESS ANALYSIS OF THE T BOLT JOINT THREE DIMENSIONAL STRESS ANALYSIS OF THE T BOLT JOINT Víctor Martínez 1, Alfredo Güemes 2, Norbert Blanco 1, Josep Costa 1 1 Escola Politècnica Superior. Universitat de Girona. Girona, Spain (17071) 2

More information

Stability of Simply Supported Square Plate with Concentric Cutout

Stability of Simply Supported Square Plate with Concentric Cutout International OPEN ACCESS Journal Of Modern Engineering Research (IJMER) Stability of Simply Supported Square Plate with Concentric Cutout Jayashankarbabu B. S. 1, Dr. Karisiddappa 1 (Civil Engineering

More information

*Corresponding author: Keywords: Finite-element analysis; Multiscale modelling; Onset theory; Dilatational strain invariant.

*Corresponding author: Keywords: Finite-element analysis; Multiscale modelling; Onset theory; Dilatational strain invariant. 18 TH INTERNATIONAL CONFERENCE ON COMPOSITE MATERIALS MICROMECHANICAL MODELLING OF TEST SPECIMENS FOR ONSET OF DILATATIONAL DAMAGE OF POLYMER MATRIX IN COMPOSITE MATERIALS T. D. Tran 1, D. Kelly 1*, G.

More information

COMPUTER AIDED DESIGN IN CASE OF THE LAMINATED COMPOSITE MATERIALS

COMPUTER AIDED DESIGN IN CASE OF THE LAMINATED COMPOSITE MATERIALS 6 th International Conference Computational Mechanics and Virtual Engineering COMEC 15 15-16 October 15, Braşov, Romania COMPUER AIDED DESIGN IN CASE OF HE LAMINAED COMPOSIE MAERIALS Camelia Cerbu ransilvania

More information

Stochastic structural dynamic analysis with random damping parameters

Stochastic structural dynamic analysis with random damping parameters Stochastic structural dynamic analysis with random damping parameters K. Sepahvand 1, F. Saati Khosroshahi, C. A. Geweth and S. Marburg Chair of Vibroacoustics of Vehicles and Machines Department of Mechanical

More information

Reliability Prediction for a Thermal System Using CFD and FEM Simulations

Reliability Prediction for a Thermal System Using CFD and FEM Simulations Proceedings of IMECE2008 2008 ASME International Mechanical Engineering Congress and Exposition October 31 - November 6, 2008, Boston, Massachusetts, USA IMECE2008-68365 Reliability Prediction for a Thermal

More information

Strength of Material. Shear Strain. Dr. Attaullah Shah

Strength of Material. Shear Strain. Dr. Attaullah Shah Strength of Material Shear Strain Dr. Attaullah Shah Shear Strain TRIAXIAL DEFORMATION Poisson's Ratio Relationship Between E, G, and ν BIAXIAL DEFORMATION Bulk Modulus of Elasticity or Modulus of Volume

More information

Chapter 2 - Macromechanical Analysis of a Lamina. Exercise Set. 2.1 The number of independent elastic constants in three dimensions are: 2.

Chapter 2 - Macromechanical Analysis of a Lamina. Exercise Set. 2.1 The number of independent elastic constants in three dimensions are: 2. Chapter - Macromechanical Analysis of a Lamina Exercise Set. The number of independent elastic constants in three dimensions are: Anisotropic Monoclinic 3 Orthotropic 9 Transversely Orthotropic 5 Isotropic.

More information

Module 7: Micromechanics Lecture 29: Background of Concentric Cylinder Assemblage Model. Introduction. The Lecture Contains

Module 7: Micromechanics Lecture 29: Background of Concentric Cylinder Assemblage Model. Introduction. The Lecture Contains Introduction In this lecture we are going to introduce a new micromechanics model to determine the fibrous composite effective properties in terms of properties of its individual phases. In this model

More information

FASTENER PULL-THROUGH FAILURE IN GFRP LAMINATES

FASTENER PULL-THROUGH FAILURE IN GFRP LAMINATES 18 TH INTERNATIONAL CONFERENCE ON COMPOSITE MATERIALS FASTENER PULL-THROUGH FAILURE IN GFRP LAMINATES G. Catalanotti 1*, P.P. Camanho 1, P. Ghys 2, A.T. Marques 1 1 DEMec, Faculdade de Engenharia, Universidade

More information

8.3 Design of Base Plate for Thickness

8.3 Design of Base Plate for Thickness 8.3 Design o Base Plate or Thickness 8.3.1 Design o base plate or thickness (Elastic Design) Upto this point, the chie concern has been about the concrete oundation, and methods o design have been proposed

More information

Effect of fiber volume fraction on fracture mechanics in continuously reinforced fiber composite materials

Effect of fiber volume fraction on fracture mechanics in continuously reinforced fiber composite materials University o South Florida Scholar Coons Graduate Theses and Dissertations Graduate School 2005 ect o iber volue raction on racture echanics in continuously reinorced iber coposite aterials Thoas Wasik

More information

Numerical simulation of delamination onset and growth in laminated composites

Numerical simulation of delamination onset and growth in laminated composites Numerical simulation of delamination onset and growth in laminated composites G. Wimmer, C. Schuecker, H.E. Pettermann Austrian Aeronautics Research (AAR) / Network for Materials and Engineering at the

More information

Seismic Pushover Analysis Using AASHTO Guide Specifications for LRFD Seismic Bridge Design

Seismic Pushover Analysis Using AASHTO Guide Specifications for LRFD Seismic Bridge Design Seismic Pushover Analysis Using AASHTO Guide Specifications for LRFD Seismic Bridge Design Elmer E. Marx, Alaska Department of Transportation and Public Facilities Michael Keever, California Department

More information

Modeling and simulation of high pressure composite cylinders for hydrogen storage

Modeling and simulation of high pressure composite cylinders for hydrogen storage Scholars' Mine Doctoral Dissertations Student Research & Creative Works Spring 2009 Modeling and simulation of high pressure composite cylinders for hydrogen storage Jianbing Hu Follow this and additional

More information

Fatigue Failure Criteria for Unidirectional Fiber Composites 1

Fatigue Failure Criteria for Unidirectional Fiber Composites 1 Z. Hashin 2 Professor and Chairman, Department ol Solid Mechanics, Materials and Structures, Tel Aviv University, Ramat-Avlv, Tel Aviv 69978, Israel. Fellow ASME Fatigue Failure Criteria for Unidirectional

More information

Nonlinear nite element analysis of rectangular reinforced concrete slabs strengthened by ber reinforced plastics

Nonlinear nite element analysis of rectangular reinforced concrete slabs strengthened by ber reinforced plastics Scientia Iranica A (2015) 22(3), 615{628 Sharif University of Technology Scientia Iranica Transactions A: Civil Engineering www.scientiairanica.com Nonlinear nite element analysis of rectangular reinforced

More information

MODELING SLAB-COLUMN CONNECTIONS REINFORCED WITH GFRP UNDER LOCALIZED IMPACT

MODELING SLAB-COLUMN CONNECTIONS REINFORCED WITH GFRP UNDER LOCALIZED IMPACT MODELING SLAB-COLUMN CONNECTIONS REINFORCED WITH GFRP UNDER LOCALIZED IMPACT QI ZHANG and AMGAD HUSSEIN Faculty of Engineering, Memorial University of Newfoundland St. John s, Newfoundland, Canada, A1B

More information

Density. Density 22/10/2015. Rules of Mixture for Elastic Properties. Materi ke-6

Density. Density 22/10/2015. Rules of Mixture for Elastic Properties. Materi ke-6 //5 Materi ke-6 Rules o Mixture or lastic Properties Nurun nayiroh, M.Si Rules o Mixture' adalah ekspresi ateatika yang eberikan beberapa properti dari koposit dala hal siat, kuantitas dan penataan bahan

More information

Effects of geometry and properties of fibre and matrix on overall. composite parameters

Effects of geometry and properties of fibre and matrix on overall. composite parameters Int. Journal of Applied Sciences and ngineering Research, ol. 3, Issue 4, 2014 www.ijaser.com 2014 by the authors Licensee IJASR- Under Creative Commons License 3.0 editorial@ijaser.com Research article

More information

USE OF FINITE ELEMENT METHOD TO EVALUATE THE STRENGTH RESPONSE OF NOTCHED COMPOSITE LAMINATES UNDER TENSION ARJUN KOTHIDAR

USE OF FINITE ELEMENT METHOD TO EVALUATE THE STRENGTH RESPONSE OF NOTCHED COMPOSITE LAMINATES UNDER TENSION ARJUN KOTHIDAR USE OF FINITE ELEMENT METHOD TO EVALUATE THE STRENGTH RESPONSE OF NOTCHED COMPOSITE LAMINATES UNDER TENSION By ARJUN KOTHIDAR A thesis submitted in partial fulfillment of the requirements for the degree

More information

Liquefaction Analysis of Sandy Ground due to Tsunami

Liquefaction Analysis of Sandy Ground due to Tsunami Liqueaction Analysis o Sandy Ground due to Tsunami Y. Okumura Kyoto University, Japan R. Kato Nikken Sekkei Civil Engineering Ltd., Japan F. Oka Kyoto University, Japan SUMMARY The 2011 o the Paciic coast

More information

Generic Strategies to Implement Material Grading in Finite Element Methods for Isotropic and Anisotropic Materials

Generic Strategies to Implement Material Grading in Finite Element Methods for Isotropic and Anisotropic Materials University of Nebraska - Lincoln DigitalCommons@University of Nebraska - Lincoln Engineering Mechanics Dissertations & Theses Mechanical & Materials Engineering, Department of Winter 12-9-2011 Generic

More information

Techniques for Estimating Uncertainty Propagation in Probabilistic Design of Multilevel Systems

Techniques for Estimating Uncertainty Propagation in Probabilistic Design of Multilevel Systems 0th AIAA/ISSMO Multidisciplinary Analysis and Optimization Conerence 0 August - September 004, Albany, New Yor AIAA 004-4470 Techniques or Estimating Uncertainty Propagation in Probabilistic Design o Multilevel

More information

COMPARISON OF THERMAL CHARACTERISTICS BETWEEN THE PLATE-FIN AND PIN-FIN HEAT SINKS IN NATURAL CONVECTION

COMPARISON OF THERMAL CHARACTERISTICS BETWEEN THE PLATE-FIN AND PIN-FIN HEAT SINKS IN NATURAL CONVECTION HEFAT014 10 th International Conerence on Heat Transer, Fluid Mechanics and Thermodynamics 14 6 July 014 Orlando, Florida COMPARISON OF THERMA CHARACTERISTICS BETWEEN THE PATE-FIN AND PIN-FIN HEAT SINKS

More information

Pressure Vessels Stresses Under Combined Loads Yield Criteria for Ductile Materials and Fracture Criteria for Brittle Materials

Pressure Vessels Stresses Under Combined Loads Yield Criteria for Ductile Materials and Fracture Criteria for Brittle Materials Pressure Vessels Stresses Under Combined Loads Yield Criteria for Ductile Materials and Fracture Criteria for Brittle Materials Pressure Vessels: In the previous lectures we have discussed elements subjected

More information

STRESS ANALYSIS OF A FILAMENT WOUND COMPOSITE FLYWHEEL DISK

STRESS ANALYSIS OF A FILAMENT WOUND COMPOSITE FLYWHEEL DISK THE 19 TH INTERNATIONAL CONFERENCE ON COMPOSITE MATERIALS STRESS ANALYSIS OF A FILAMENT WOUND COMPOSITE FLYWHEEL DISK Md. S. Uddin 1*, E. V. Morozov 1 and K. Shankar 1 1 School of Engineering and Information

More information

General Case for Deriving Four Pole Coefficients for Gas Pulsation

General Case for Deriving Four Pole Coefficients for Gas Pulsation urdue University urdue e-ubs International Compressor Engineering Conerence School o Mechanical Engineering 21 General Case or Deriving Four ole Coeicients or Gas ulsation Nasir Bilal urdue University

More information

Overview of Hygrothermally Stable Laminates with Improved Extension-twist Coupling

Overview of Hygrothermally Stable Laminates with Improved Extension-twist Coupling Overview of Hygrothermally Stable Laminates with Improved Extension-twist Coupling R. Haynes epartment of erospace Engineering, Georgia Institute of Technology 27 Ferst rive W, tlanta, G 3332-5, US robert.haynes@gatech.edu

More information

Fracture Mechanics of Composites with Residual Thermal Stresses

Fracture Mechanics of Composites with Residual Thermal Stresses J. A. Nairn Material Science & Engineering, University of Utah, Salt Lake City, Utah 84 Fracture Mechanics of Composites with Residual Thermal Stresses The problem of calculating the energy release rate

More information

Representation of Coriolis forces and simulation procedures for moving fluid-conveying pipes

Representation of Coriolis forces and simulation procedures for moving fluid-conveying pipes Representation o Coriolis orces and simulation procedures or moving luid-conveying pipes Jörg Gebhardt*, Frank Kassubek** *ABB Corporate Research Center Germany, Department or Automation Device Technologies,

More information

AE3610 Experiments in Fluid and Solid Mechanics TRANSIENT MEASUREMENTS OF HOOP STRESSES FOR A THIN-WALL PRESSURE VESSEL

AE3610 Experiments in Fluid and Solid Mechanics TRANSIENT MEASUREMENTS OF HOOP STRESSES FOR A THIN-WALL PRESSURE VESSEL Objective AE3610 Experiments in Fluid and Solid Mechanics TRANSIENT MEASUREMENTS OF OOP STRESSES FOR A TIN-WA PRESSURE VESSE This experiment will allow you to investigate hoop and axial stress/strain relations

More information

Calculation of Energy Release Rate in Mode I Delamination of Angle Ply Laminated Composites

Calculation of Energy Release Rate in Mode I Delamination of Angle Ply Laminated Composites Copyright c 2007 ICCES ICCES, vol.1, no.2, pp.61-67, 2007 Calculation of Energy Release Rate in Mode I Delamination of Angle Ply Laminated Composites K. Gordnian 1, H. Hadavinia 1, G. Simpson 1 and A.

More information

Size Effects In the Crushing of Honeycomb Structures

Size Effects In the Crushing of Honeycomb Structures 45th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics & Materials Conference 19-22 April 2004, Palm Springs, California AIAA 2004-1640 Size Effects In the Crushing of Honeycomb Structures Erik C.

More information

*MAT_PAPER - a new orthotropic elastoplastic model for paper materials

*MAT_PAPER - a new orthotropic elastoplastic model for paper materials *MAT_PAPER - a new orthotropic elastoplastic model for paper materials Jesper Karlsson, Dynamore Nordic Mikael Schill, Dynamore Nordic Johan Tryding, Tetra Pak *MAT_PAPER (*MAT_274) A new orthotropic elastoplastic

More information