EVALUATION OF A SIMPLIFIED METHOD FOR THE DETERMINATION OF THE NON LINEAR SEISMIC RESPONSE OF RC FRAMES
|
|
- Isabella Bailey
- 6 years ago
- Views:
Transcription
1 EVALUATIO OF A SIMPLIFIED METHOD FOR THE DETERMIATIO OF THE O LIEAR SEISMIC RESPOSE OF RC FRAMES 9 Misael REQUEA And A. Gustavo AYALA SUMMARY In this paper a siplified ethod is developed for the evaluation of the seisic behavior of building structures, in which the contribution to the response of higher odes of vibration is iportant. The steps are given for the application of the ethod. To validate results of the proposed ethod a 7-story reinforced concrete building is studied. The results obtained are copared with those corresponding to a nonlinear step by step dynaic analysis and show a good approxiation. ITRODUCTIO Current seisic design codes for structures are based on providing enough capacity so that they resist without collapse the seisic forces to which they will be subected during their useful life. In the definition of these forces it is generally accepted that structures can suffer daage when subected to the action of intense earthquaes, however, the actions for which the structures are designed are defined fro elastic analysis, which only considers in an approxiate way the daage that they ay experience. In general, it is not possible, through a linear analysis, to estiate the behavior of the structures when they undergo seisic forces that ae the behave nonlinearly, since the forces to which they are subected not only depend on the characteristics of the excitation but also on the dynaic properties of the structures in the linear and nonlinear range of behavior. Thus, in to now the real behavior of the structures, it is necessary to carry out nonlinear step by step dynaic analyses which have the inconvenience of being coplex and expensive. Recently, research has been carried out to approxiate using siplified ethods of evaluation the nonlinear behavior of building structures subected to earthquaes, e.g., Cailo (995). With these ethods it has been possible to evaluate the behavior of regular buildings, with the restriction that they do not include in their forulations the contribution to the response of higher odes of vibration, which is of iportance for structures of considerable height. Another aspect that these ethods ignore is that when subected to intense earthquaes, the lateral stiffness of the structure diinishes with increasing levels of base shear, which in turn causes changes in the distribution of the equivalent lateral forces to which the structure is subected. The ain obective of this wor is to develop and verify an approxiate ethod for the evaluation of the seisic behavior of fraes, based on the Capacity Spectru Method, CSM, as originally proposed by Freean et al (975). This ethod considers explicitly in its forulation the contribution of higher odes of vibration and the variation of the stiffness of the structure when inelastic effects occur during its earthquae response. This paper presents the different existing approaches to calculate the distributions of lateral static forces equivalent to the seisic ones. It describes in detail the evaluation ethod and an application exaple, which illustrates its practical iplications. The results obtained fro this exaple are copared with those corresponding to a nonlinear step by step analysis. Finally, the conclusions derived fro this wor are presented and recoendations are given stressing the fact that there are soe iportant aspects that deserve further research. Instituto de Ingeniería, UAM, APDO 7-, México D. F. 5,Mexico. Instituto de Ingeniería, UAM, APDO 7-, México D. F. 5,Mexico, eail: gayala@ercury.iingen.una.x
2 EQUIVALET LATERAL STATIC LOADS FOR THE SEISMIC AALYSIS OF BUILDIGS Most existent design regulations accept as a substitute to the dynaic seisic analysis of a structure a linear static analysis with lateral loads equivalent to the seisic ones. Recently, use of these equivalent loads has been extended to the evaluation of the nonlinear seisic behavior of buildings through a nonlinear static analysis in which the agnitude of the loads is onotonically increased until collapse. In this type of analysis, nown as pushover, the agnitude of these lateral loads is not iportant, but their distribution with height is, for which different investigators have proposed different ways to calculate their distribution. MODELS OF EQUIVALET LATERAL LOADS The ost coon distribution of equivalent lateral loads specified in seisic design codes is in the for of an inverted triangle, which approxiately corresponds to the distribution if only the contribution in the fundaental ode were considered. However, when structures of considerable height are analyzed, the contribution to the response of higher odes of vibration can be iportant, aing it necessary to carry out a dynaic or approxiate static analysis with distributions that explicitly consider this contribution. Load distributions with the contributions of only the fundaental ode (approach ). In buildings that respond doinantly in their fundaental ode, the distribution of equivalent static lateral loads is calculated using the equation: F i ii = V () where Fi, i and i are the respective lateral force, ass and floor ordinate of the fundaental ode corresponding to the level i, V is the base shear force and is the nuber of levels of the structure. This load distribution is siilar to that proposed in the Construction Code for the Federal District, DDF (993), aong other regulations to define the equivalent static seisic forces in buildings. Load distributions with the contributions of higher odes (approach ). A generalization of the previous pattern of loads, which includes the contribution of higher odes of vibration in the calculation of the distribution of the equivalent lateral loads, involves the use of a probabilistic approach of superposition of odal contributions. In this wor two forulations are investigated, one used by Freean et al (99), approach -A, and the other by Valles et al (99), approach -B. The forulation used by Freean et al (99) is based on the static ethod of seisic analysis, which includes the contribution of higher odes of vibration in the distribution of the lateral loads by eans of the cobination of the contributions of each considered ode with the rule of odal superposition of the square root of the su of squares, SRSS, Chopra (95). In this forulation the distribution of lateral loads depends on the pseudo spectral acceleration, Sa, corresponding to each ode, which in turn depends on the state of daage of the structure. The equation to calculate this distribution of the lateral loads is: F () = i = isai = = where is the odal shape of floor and ode and Sa is the pseudo spectral acceleration of ode. 9
3 An alternative to the distribution of eq, is that proposed by Valles et al (99) in which, the contribution of higher odes of vibration is included by accepting the existence of an equivalent fundaental ode, i, which is deterined through a cobination of vibration odes using the SRSS rule, i.e.: i ( ) iγ = (3) = where Γ is the participation factor of the ode defined as: Γ = The equation that defines the distribution of equivalent static loads is: i i Fi = V (5) Using a distribution of lateral loads in a pushover analysis, the capacity of the structure when subected to increental lateral forces ay be deterined. During this analysis in each load step, the base shear and the corresponding roof displaceent are recorded, and with these the curve called the capacity or pushover curve of the structure ay be plotted. It is possible to consider that when the stiffness of the structure changes during pushover, i.e. structural eleents reach axiu strength and plastic hinges appear, a new distribution of lateral loads ay be calculated with which it is possible to consider the state of deforation of the structure in the calculation of the lateral loads with which the pushover analysis is carried out. () DETERMIATIO OF THE OLIEAR SEISMIC BEHAVIOR OF PLAE FRAMES To deterine the nonlinear behavior of plane fraes, in this paper a siplified procedure is proposed for the calculation of the distribution of story displaceents, interstory drifts and distribution and agnitude of plastic hinges as the result of subecting the structure to a given seisic deand. The proposed ethod is a variation of the CSM, but differs in that to deterine the perforance point, the capacity curve of the structure is not copared with the response spectru of the excitation. Instead, to deterine the behavior of a frae subected to one or several earthquaes, the original structure represented by a ultiple degrees of freedo syste, MDFS, is transfored into one equivalent single degree of freedo syste (SDFS) using concepts of structural dynaics. The equivalent SDFS is then subected to one or several seisic records and its axiu displaceent is obtained. This displaceent corresponding to the spectral displaceent (Sd) of the fundaental ode is then transfored to the corresponding roof displaceent of the MDFS with which the perforance point of the structure to a given seisic deand is deterined. To include the contribution of higher odes of vibration to the distribution of equivalent static loads required by this ethod, the two forulations discussed above are evaluated. In approach A, fro the capacity curve resulting fro the pushover only the contribution of the fundaental ode is extracted, aing it possible to deterine the properties of the equivalent SDFS. In approach B, the behavior curve of SDFS corresponding to the equivalent ode, which includes the contribution of higher odes is directly obtained fro the capacity curve derived fro the pushover analysis. The steps involved in the procedure proposed in this investigation are as follows:. A static nonlinear pushover analysis of the structure represented by a MDFS is carried out and with the results of base shear and roof displaceent the capacity or pushover curve of the structure is constructed.. The capacity curve is approxiated with a bilineal for and this, in turn, is transfored to the space of Sa versus Sd by eans of the following equations: 3 9
4 S a Sd V α W = () PF = (7) i where is the roof displaceent of the building, W is total weight of the structure and PF i is the odal participation factor for level i and ode, i.e.: and PF i = α is the base shear participation factor for ode, defined as: α = (9) 3. The ass corresponding to the fundaental ode,, is obtained by transforing the total ass of the MDFS with the chosen approach for distribution of loads. The equation required by approaches and - A is: and, by approach -B: i= i i i = () = () i= i i. The odal base shear (V) versus Sd curve is deterined by ultiplying the odal ass by Sa obtained in step. This curve is the behavior curve of the SDFS fro which one can calculate the elastic and inelastic stiffness of the syste, as well as its yielding force. In the case of approach A, fro the original capacity curve considering the contribution of higher odes, the contribution of only the fundaental ode required to calculate the V versus Sd curve needs to be extracted. To do this the original curve is approxiated with straight line segents, so that the points corresponding to first yielding and to other interediate states of interest in the behavior of the structure ay be defined, fig. To deterine the line segents of the reduced capacity curve corresponding only to the contribution of the first ode, curve O-A'-B'-C'-D ' in fig, it is necessary to transfor each of the line segents of the original curve O-A-B-C-D, with the following equations: () (ode ) ( odes ) α (ode ) ( odes ) αv = () V = (3) (ode ) (ode ) where and V are the roof displaceent and base shear corresponding to the ( odes ) ( odes ) contribution of the fundaental ode and and V are the corresponding roof displaceent and base shear including the contribution of all odes,. 5. A nonlinear analysis of the SDFS subected to a given seisic deand is carried out, obtaining the axiu Sd, which represents the perforance point of the SDFS.. The axiu Sd, obtained in step 5, is transfored fro the SDFS to the MDFS considering the evaluation approach used Approach 9
5 Approach -A Approach -B Sd PF = () S PF (ode ) = d (5) ( odes ) (ode ) = β () S PF (equi. ode ) = d (7) where is the roof displaceent neglecting the contribution of higher odes, β is the ratio of the roof displaceent with the contribution of odes to that corresponding to the fundaental ode, and (equi. ode ) is the roof displaceent considering the contribution of the equivalent fundaental ode Figure. Idealized capacity curves. 7. A new pushover analysis of the MDFS is carried out to the axiu roof displaceent obtained in step, fro which the lateral displaceents of the floors, the interstory drifts and the distribution and intensity of the plastic hinges of the structure can be deterined. MODEL STUDIED The structure studied is a regular square shape plan office building, located in area III of the seisic zoning of the valley of Mexico. The structure consists of four reinforced concrete fraes in each direction with three bays each long. The building has 7 floors with a story height of 3., except the first one which is. Bea sections are 35x9 c in all floors. Coluns are of types with sections, x c fro story to 7, 9x9 c fro story to, 75x75 c fro story to and x c for the last three floors. Slab thicness in all floors is c. The evaluation ethod was applied to an interior frae. COMPARISO AD AALYSIS OF THE RESULTS To validate the evaluation ethod, the changes in the odal shapes when inelastic effects in the frae occurred under increasing lateral loads during pushover were deterined. Fig a shows the changes in the fundaental ode as the daage increases in the structure. Liewise, figs b and c illustrate the changes in the second and third odes correspondingly. Taing into account the two considered approaches, the distributions of lateral loads in the frae with increasing values of base shear were deterined, fig 3a. In fig 3b the variation of the distribution of the lateral loads of approach is presented as daage in the structure occurs. Using the evaluation ethod with the considered approaches of distribution of equivalent lateral loads, the seisic perforances of the investigated frae were deterined. For approach the pushover analysis of the structure was carried out and the corresponding capacity curve deterined, fig. This capacity curve was approxiated with a bilineal for and then transfored, into the Sa versus Sd, curve, i.e., the behavior curve of the SDFS, fig 5. For the equivalent SDFS the odal ass was calculated with eq and a fraction of critical daping of.5 was assigned. Using as seisic deand the SCT-EW record of the 95 Michoacán earthquae, the axiu response of the equivalent SDFS was deterined and, in an inverse process, the corresponding 5 9
6 axiu roof displaceent. This displaceent was.3. The sae procedure was carried out using approaches -A and -B. For approach -A the capacity curve corresponding to the fundaental ode base shear was used, fig, and the axiu roof displaceent was.3. For approach -B the capacity curve of the frae and its bilineal idealization is presented in fig 7. The corresponding roof displaceent was Fundaental Modal Shape T=.75 T=.3 T=.9 T=3.53 T= Second Mode Shape T =.597 T =.55 T =.779 T =.977 T = Third Mode Shape T=.339 T=.357 T=.397 T=.5 T=.5 (a) (b) (c) Figure. Variation odal shapes with change of stiffness. To copare, a nonlinear dynaic step by step analysis was carried out using the sae seisic deand giving a axiu roof displaceent of.37. Fig shows the coparison of the lateral displaceents and fig 9 that of the interstory drifts. Finally, figs a to c show the distributions and sizes of plastic rotations of hinges as obtained with approaches, -A and the nonlinear dynaic analysis, respectively. COCLUSIOS In this paper an approxiate ethod of seisic evaluation of tall building fraes was presented and tested. The results obtained considering only the contribution of the fundaental ode and its variation with the state of deforation of the frae approxiate well those obtained fro the nonlinear step to step dynaic analysis. Also, the analyzed frae, being regular, is defored basically in its first ode, even when the frae presents considerable daage when plastic hinges occur in the structural eleents. The lateral displaceents, the distortions and the distribution and intensity of the plastic hinges obtained taing into account the contribution of higher odes approxiate very well those fro the nonlinear step by step dynaic analysis. 5 5 Lateral Loads (ton) Criterio Criterio Lateral Loads (ton) T =.75 T =.3 T =.9 T = 3.53 T = 5. (a) (b) Figure 3. Coparison of the distribution of lateral loads 9
7 Base Shear (ton) Roof Displaceent () Capacity Curve. Idealization Sa (g) Spectral Displaceent () Figure. Capacity curves corresponding to approach Figure 5. Behavior curve Sa vs Sd (approach of evaluation. of evaluation). Fro the results obtained when applying the siplified ethod of evaluation to the 7-story frae one ay conclude: ) The stiffness degradation of the structure influences ore the fundaental ode shape than those of higher odes. ) The distribution of lateral loads varies as plastic hinges are fored and/or increased in the structural eleents. 3). The effect of higher odes is iportant when the frae behaves in the nonlinear range. ). In the deterination of the seisic behavior, it is very iportant to consider the changes in the odes of vibration. ACKOWLEDGEMETS We acnowledge the ational Council for Science and Technology, COACyT for the scholarship of the first author and the sponsorship of the proect Developent of analytic and experiental ethods for the evaluation of the seisic behavior of structures fro which this wor was derived 9 Base Shear Roof Displaceent () Capacity Curve st ode Idealization Base Shear (ton) Roof Displaceent () Capacity Curve Idealization Figure. Capacity curves corresponding to approach -A of evaluation. Figure 7. Capacity curve corresponding to approach -B of evaluation. REFERECES Cailo, L. (995), Approxiate Procedure for the Deterination of the Seisic Capacity of Buildings, (in Spanish) aster thesis, DEPFI, UAM, Mexico. Chopra A. (995), Dynaics of Structures Theory and Applications to Earthquae Engineering, Prentice Hall, Englewood Cliffs, J. DDF, (993) Construction Code for the Federal District, (in Spanish) Mexico. 7 9
8 Freean, S., icoletti, J. P. and Tyrrell, J. V. (975), Evaluation of Existing Buildings for Seisic Ris. A Case Study of aval Puget Sound Shipyard, Breerton, Washington, Proceedings of the st US ational Conference on Earthquae Engineering, EERI, Ann Arbor, MI. Freean, S., Sasai, K., and Paret, T. (99), Multi-Mode Pushover Procedure (MMP)-A Method to Identify the Effects of Higher Modes in a Pushover Analysis, Proceedings of the th ational Conference on Earthquae Engineering, EERI, Seattle, WA. Valles, R., Reinhorn, A., Kunnath, S., Li, C. and Madan A. (99), IDARCD version.: A Coputer Progra for the Inelastic Analysis of Buildings, Technical Report CEER-9-, ational Center for Earthquae Engineering Research, Buffalo, Y Lateral Displaceents () Approach -A Step by Step Approach -B Approach... Interstorey D rift () Approach Approach -A Approach -B Step by Step Figure. Coparison of floor displaceents. Figure 9. Coparison of interstory drifts. (a) (b) (c) Figure. Distribution and intensity of plastic hinges, a) approach, b) approach and c) dynaic analysis. 9
Improved Direct Displacement-Based Design Procedure for Performance-Based Seismic Design of Structures
Iproved Direct Displaceent-Based Design Procedure for Perforance-Based Seisic Design of Structures Rakesh K. Goel, California Polytechnic State University, San Luis Obispo, and Anil K. Chopra, University
More informationSeismic Analysis of Structures by TK Dutta, Civil Department, IIT Delhi, New Delhi.
Seisic Analysis of Structures by K Dutta, Civil Departent, II Delhi, New Delhi. Module 5: Response Spectru Method of Analysis Exercise Probles : 5.8. or the stick odel of a building shear frae shown in
More informationSEISMIC FRAGILITY ANALYSIS
9 th ASCE Specialty Conference on Probabilistic Mechanics and Structural Reliability PMC24 SEISMIC FRAGILITY ANALYSIS C. Kafali, Student M. ASCE Cornell University, Ithaca, NY 483 ck22@cornell.edu M. Grigoriu,
More informationSPECTRAL PUSHOVER VERSUS STATIC AND MODAL PUSHOVER ANALYSIS
SPECTRAL PUSHOVER VERSUS STATIC AND MODAL PUSHOVER ANALYSIS V.S. Tsiggelis 1, A.M. Athanatopoulou 2 and I.E. Avraidis 3 1 PhD Candidate, Dept. of Civil Engineering, Aristotle University of Thessaloniki,
More informationANALYSIS ON RESPONSE OF DYNAMIC SYSTEMS TO PULSE SEQUENCES EXCITATION
The 4 th World Conference on Earthquake Engineering October -7, 8, Beijing, China ANALYSIS ON RESPONSE OF DYNAMIC SYSTEMS TO PULSE SEQUENCES EXCITATION S. Li C.H. Zhai L.L. Xie Ph. D. Student, School of
More informationDynamic Response of SDOF System: A Comparative Study Between Newmark s Method and IS1893 Response Spectra
Dynaic Response of SDOF Syste: A Coparative Study Between Newark s Method and IS893 Response Spectra [] P. Manoj Reddy [2] Dr. A. Viala [] Post Graduate Student, [2] Associate Professor [][2] Chaitanya
More informationUniaxial compressive stress strain model for clay brick masonry
Uniaxial copressive stress strain odel for clay brick asonry Heant B. Kaushik, Durgesh C. Rai* and Sudhir K. Jain Departent of Civil Engineering, Indian Institute of Technology Kanpur, Kanpur 208 016,
More informationDETECTION OF NONLINEARITY IN VIBRATIONAL SYSTEMS USING THE SECOND TIME DERIVATIVE OF ABSOLUTE ACCELERATION
DETECTION OF NONLINEARITY IN VIBRATIONAL SYSTEMS USING THE SECOND TIME DERIVATIVE OF ABSOLUTE ACCELERATION Masaki WAKUI 1 and Jun IYAMA and Tsuyoshi KOYAMA 3 ABSTRACT This paper shows a criteria to detect
More informationAnalysis of Impulsive Natural Phenomena through Finite Difference Methods A MATLAB Computational Project-Based Learning
Analysis of Ipulsive Natural Phenoena through Finite Difference Methods A MATLAB Coputational Project-Based Learning Nicholas Kuia, Christopher Chariah, Mechatronics Engineering, Vaughn College of Aeronautics
More informationNonlinear static analysis PUSHOVER
Nonlinear static analysis PUSHOVER Adrian DOGARIU European Erasmus Mundus Master Course Sustainable Constructions under Natural Hazards and Catastrophic Events 520121-1-2011-1-CZ-ERA MUNDUS-EMMC Structural
More informationMonitoring and system identification of suspension bridges: An alternative approach
Monitoring and syste identification of suspension bridges: An alternative approach Erdal Şafak Boğaziçi University, Kandilli Observatory and Earthquake Reseach Institute, Istanbul, Turkey Abstract This
More informationNUMERICAL MODELLING OF THE TYRE/ROAD CONTACT
NUMERICAL MODELLING OF THE TYRE/ROAD CONTACT PACS REFERENCE: 43.5.LJ Krister Larsson Departent of Applied Acoustics Chalers University of Technology SE-412 96 Sweden Tel: +46 ()31 772 22 Fax: +46 ()31
More informationINELASTIC SEISMIC DISPLACEMENT RESPONSE PREDICTION OF MDOF SYSTEMS BY EQUIVALENT LINEARIZATION
INEASTIC SEISMIC DISPACEMENT RESPONSE PREDICTION OF MDOF SYSTEMS BY EQUIVAENT INEARIZATION M. S. Günay 1 and H. Sucuoğlu 1 Research Assistant, Dept. of Civil Engineering, Middle East Technical University,
More informationModeling Diaphragms in 2D Models with Linear and Nonlinear Elements
Modeling Diaphrags in 2D Models with Linear and Nonlinear Eleents Vesna Terzic UC Berkeley October 2011 Introduction to the proble (1) Floor diaphrag need to be axially rigid to assure proper distribution
More informationPhysics 2107 Oscillations using Springs Experiment 2
PY07 Oscillations using Springs Experient Physics 07 Oscillations using Springs Experient Prelab Read the following bacground/setup and ensure you are failiar with the concepts and theory required for
More informationANALYTICAL INVESTIGATION AND PARAMETRIC STUDY OF LATERAL IMPACT BEHAVIOR OF PRESSURIZED PIPELINES AND INFLUENCE OF INTERNAL PRESSURE
DRAFT Proceedings of the ASME 014 International Mechanical Engineering Congress & Exposition IMECE014 Noveber 14-0, 014, Montreal, Quebec, Canada IMECE014-36371 ANALYTICAL INVESTIGATION AND PARAMETRIC
More informationACTIVE VIBRATION CONTROL FOR STRUCTURE HAVING NON- LINEAR BEHAVIOR UNDER EARTHQUAKE EXCITATION
International onference on Earthquae Engineering and Disaster itigation, Jaarta, April 14-15, 8 ATIVE VIBRATION ONTROL FOR TRUTURE HAVING NON- LINEAR BEHAVIOR UNDER EARTHQUAE EXITATION Herlien D. etio
More informationUsing a De-Convolution Window for Operating Modal Analysis
Using a De-Convolution Window for Operating Modal Analysis Brian Schwarz Vibrant Technology, Inc. Scotts Valley, CA Mark Richardson Vibrant Technology, Inc. Scotts Valley, CA Abstract Operating Modal Analysis
More informationSECANT MODES SUPERPOSITION: A SIMPLIFIED METHOD FOR SEISMIC ASSESSMENT OF RC FRAMES
The 4 th World Conference on Earthquake Engineering October -7, 008, Beijing, China SECANT ODES SUPERPOSITION: A SIPLIFIED ETHOD FOR SEISIC ASSESSENT OF RC FRAES S. Peloso and A. Pavese Post-doc Researcher,
More informationAbout the definition of parameters and regimes of active two-port networks with variable loads on the basis of projective geometry
About the definition of paraeters and regies of active two-port networks with variable loads on the basis of projective geoetry PENN ALEXANDR nstitute of Electronic Engineering and Nanotechnologies "D
More informationCAPACITY SPECTRUM FOR STRUCTURES ASYMMETRIC IN PLAN
13 th World Conference on Earthquake Engineering Vancouver, B.C., Canada August 1-6, 004 Paper No. 653 CAPACITY SPECTRUM FOR STRUCTURES ASYMMETRIC IN PLAN B. K. Raghu Prasad 1, A. Seetha Ramaiah and A.
More informationEnvelope frequency Response Function Analysis of Mechanical Structures with Uncertain Modal Damping Characteristics
Copyright c 2007 Tech Science Press CMES, vol.22, no.2, pp.129-149, 2007 Envelope frequency Response Function Analysis of Mechanical Structures with Uncertain Modal Daping Characteristics D. Moens 1, M.
More informationNonlinear Analysis of Reinforced Masonry Shear Walls with ASCE 41
Nonlinear Analysis of Reinforced Masonry Shear Walls with ASCE 41 Noveber 4, 2017 P. Benson Shing University of California, San Diego The Masonry Society AIA Provider: 50119857 Reinforced Masonry Wall
More informationFEM-Design. Verification Examples. version Motto: ,,There is singularity between linear and nonlinear world. (Dr.
FEM-Design version.3 8 Motto:,,There is singularity between linear and nonlinear world. (Dr. Ire Bojtár) StruSoft AB Visit the StruSoft website for copany and FEM-Design inforation at www.strusoft.co Copyright
More informationSEISMIC RESPONSE EVALUATION OF AN RC BEARING WALL BY DISPLACEMENT-BASED APPROACH
3 th World Conference on Earthquake Engineering Vancouver, B.C., Canada August -, 4 Paper No. 49 SEISMIC RESPONSE EVALUATION OF AN RC BEARING WALL BY DISPLACEMENT-BASED APPROACH Chang-Hun HYUN, Sanghyun
More informationApproximate method for temperature-dependent characteristics of structures with viscoelastic dampers
Arch Appl Mech 2018 88:1695 1711 https://doi.org/10.1007/s00419-018-1394-6 ORIGINAL Roan Lewandowsi Maciej Przychodzi Approxiate ethod for teperature-dependent characteristics of structures with viscoelastic
More informationAnalysis of ground vibration transmission in high precision equipment by Frequency Based Substructuring
Analysis of ground vibration transission in high precision equipent by Frequency Based Substructuring G. van Schothorst 1, M.A. Boogaard 2, G.W. van der Poel 1, D.J. Rixen 2 1 Philips Innovation Services,
More informationLecture #8-3 Oscillations, Simple Harmonic Motion
Lecture #8-3 Oscillations Siple Haronic Motion So far we have considered two basic types of otion: translation and rotation. But these are not the only two types of otion we can observe in every day life.
More informationand Sabah Moussaoui a Accepted 10 June 2013, Available online 16 June 2013, Vol.3, No.2 (June 2013)
Research Article International Journal of Current Engineering and Technology ISSN 2277-4106 2013 INPRESSCO. All Rights Reserved. Available at http://inpressco.co/category/ijcet Coparison of Static Pushover
More informationAn Inverse Interpolation Method Utilizing In-Flight Strain Measurements for Determining Loads and Structural Response of Aerospace Vehicles
An Inverse Interpolation Method Utilizing In-Flight Strain Measureents for Deterining Loads and Structural Response of Aerospace Vehicles S. Shkarayev and R. Krashantisa University of Arizona, Tucson,
More informationEFFECTIVE MODAL MASS & MODAL PARTICIPATION FACTORS Revision I
EFFECTIVE MODA MASS & MODA PARTICIPATION FACTORS Revision I B To Irvine Eail: to@vibrationdata.co Deceber, 5 Introduction The effective odal ass provides a ethod for judging the significance of a vibration
More informationMeasuring orbital angular momentum superpositions of light by mode transformation
CHAPTER 7 Measuring orbital angular oentu superpositions of light by ode transforation In chapter 6 we reported on a ethod for easuring orbital angular oentu (OAM) states of light based on the transforation
More informationAnalysis and Algorithm
Analysis and Algorith Developers and sponsors assue no responsibility for the use of MIDAS Faily Progra (MIDAS/GeoX, MIDAS/Civil, MIDAS/FX+, MIDAS/Abutent, MIDAS/Pier, MIDAS/Deck, MIDAS/GS, MIDAS/Gen,
More informationDETERMINATION OF PERFORMANCE POINT IN CAPACITY SPECTRUM METHOD
ISSN (Online) : 2319-8753 ISSN (Print) : 2347-6710 International Journal of Innovative Research in Science, Engineering and Technology An ISO 3297: 2007 Certified Organization, Volume 2, Special Issue
More informationDynamic analysis of frames with viscoelastic dampers: a comparison of damper models
Structural Engineering and Mechanics, Vol. 41, No. 1 (2012) 113-137 113 Dynaic analysis of fraes with viscoelastic dapers: a coparison of daper odels R. Lewandowski*, A. Bartkowiak a and H. Maciejewski
More informationNumerical Studies of a Nonlinear Heat Equation with Square Root Reaction Term
Nuerical Studies of a Nonlinear Heat Equation with Square Root Reaction Ter Ron Bucire, 1 Karl McMurtry, 1 Ronald E. Micens 2 1 Matheatics Departent, Occidental College, Los Angeles, California 90041 2
More informationRole of Control-Structure Interaction in Protective System Design
Published in the ASCE Journal of Engineering Mechanics, ol. 121, No. 2, Feb. 1995 pp. 322 338. Role of Control-Structure Interaction in Protective Syste Design S. J. Dyke 1, Student Meber ASCE, B. F. Spencer,
More informationHydro-Elastic Criterion for Practical Design
Hydro-Elastic Criterion for Practical Design Hannes Bogaert ), Mirek Kainski ) ) MARIN, Hydro-Structural Services, Wageningen, Netherlands & Delft University of Technology, Ship Structures Laboratory,
More informationREDUCTION OF FINITE ELEMENT MODELS BY PARAMETER IDENTIFICATION
ISSN 139 14X INFORMATION TECHNOLOGY AND CONTROL, 008, Vol.37, No.3 REDUCTION OF FINITE ELEMENT MODELS BY PARAMETER IDENTIFICATION Riantas Barauskas, Vidantas Riavičius Departent of Syste Analysis, Kaunas
More informationOptical Properties of Plasmas of High-Z Elements
Forschungszentru Karlsruhe Techni und Uwelt Wissenschaftlishe Berichte FZK Optical Properties of Plasas of High-Z Eleents V.Tolach 1, G.Miloshevsy 1, H.Würz Project Kernfusion 1 Heat and Mass Transfer
More informationFeature Extraction Techniques
Feature Extraction Techniques Unsupervised Learning II Feature Extraction Unsupervised ethods can also be used to find features which can be useful for categorization. There are unsupervised ethods that
More informationQualitative Modelling of Time Series Using Self-Organizing Maps: Application to Animal Science
Proceedings of the 6th WSEAS International Conference on Applied Coputer Science, Tenerife, Canary Islands, Spain, Deceber 16-18, 2006 183 Qualitative Modelling of Tie Series Using Self-Organizing Maps:
More information821. Study on analysis method for deepwater TTR coupled vibration of parameter vibration and vortex-induced vibration
81. Study on analysis ethod for deepwater TTR coupled vibration of paraeter vibration and vortex-induced vibration Wu Xue-Min 1, Huang Wei-Ping Shandong Key aboratory of Ocean Engineering, Ocean University
More informationSEISMIC RELIABILITY FUNCTIONS OF MULTISTORY BUILDINGS THEIR SENSITIVITY TO SEVERAL ANALYSIS AND DESIGN VARIABLES
October 12-17, 28, Beijing, China SEISMIC RELIABILITY FUNCTIONS OF MULTISTORY BUILDINGS THEIR SENSITIVITY TO SEVERAL ANALYSIS AND DESIGN VARIABLES ABSTRACT : O. Díaz-López 1, E. Ismael-Hernández 2 and
More informationChapter 8 Deflection. Structural Mechanics 2 Dept of Architecture
Chapter 8 Deflection Structural echanics Dept of rchitecture Outline Deflection diagras and the elastic curve Elastic-bea theory The double integration ethod oent-area theores Conjugate-bea ethod 8- Deflection
More informationExperimental Based Substructuring Using a Craig-Bampton Transmission Simulator Model
Experiental Based Substructuring Using a raig-bapton ransission Siulator Model Mathew S. llen, Daniel. Kaer Departent of Engineering Physics University of Wisconsin Madison, WI 376 kaer@engr.wisc.edu,
More informationSuccessive Model-Updating of the dynamic behaviour of casing bodies on a practical example of an axial piston pump
Successive Model-Updating of the dynaic behaviour of casing bodies on a practical exaple of an axial piston pup Ulrich Bittner Bosch Rexroth, Horb, Gerany Suary: These days, generally all new products
More informationBehaviour of Headed Anchor Blind Bolts Embedded in Concrete Filled Circular Hollow Section Column
Behaviour of Headed Anchor Blind Bolts Ebedded in Concrete Filled Circular Hollow Section Colun Yusak Oktavianus 1, Helen M. Goldsworthy 2, Ead F. Gad 3 1. Corresponding Author. PhD Candidate, Departent
More informationNumerical Modeling of Self-Compacting Mortar Flow Using Discrete Element Method
Nuerical Modeling of Self-Copacting Flow Using Discrete Eleent Method - Technical Paper - Miansong HUANG *1, Xuehui AN *, Takayuki OBARA *3 and Masahiro OUCHI *4 ABSTRACT A nuerical odeling of Self-Copacting
More informationA Simplified Analytical Approach for Efficiency Evaluation of the Weaving Machines with Automatic Filling Repair
Proceedings of the 6th SEAS International Conference on Siulation, Modelling and Optiization, Lisbon, Portugal, Septeber -4, 006 0 A Siplified Analytical Approach for Efficiency Evaluation of the eaving
More informationChapter 1: Basics of Vibrations for Simple Mechanical Systems
Chapter 1: Basics of Vibrations for Siple Mechanical Systes Introduction: The fundaentals of Sound and Vibrations are part of the broader field of echanics, with strong connections to classical echanics,
More informationDetermining a Function for the Damping Coefficient of a laminated Stack
DOI: 10.435/UB.OVGU-017-093 TECHNISCHE MECHANIK, 37, -5, (017), 161 170 subitted: June 9, 017 Deterining a Function for the Daping Coefficient of a lainated Stack C. Zahalka, K. Ellerann The design of
More informationComparison Studies on Dynamic Packaging Properties of Corrugated Paperboard Pads
Engineering, 2010, 2, 378-386 doi:10.4236/eng.2010.25049 Published Online May 2010 (http://www.scirp.org/journal/eng) Coparison Studies on Dynaic Packaging Properties of Corrugated Paperboard Pads Abstract
More informationANALYSIS OF HALL-EFFECT THRUSTERS AND ION ENGINES FOR EARTH-TO-MOON TRANSFER
IEPC 003-0034 ANALYSIS OF HALL-EFFECT THRUSTERS AND ION ENGINES FOR EARTH-TO-MOON TRANSFER A. Bober, M. Guelan Asher Space Research Institute, Technion-Israel Institute of Technology, 3000 Haifa, Israel
More informationVibration Characteristics of Cardboard Inserts in Shells
2003-01-1489 Vibration Characteristics of Cardboard Inserts in Shells Martin G. Foulkes and Jaes P. De Clerck General Motors Corporation Raendra Singh he Ohio State University Copyright 2003 SAE International
More informationSeismic Fragilities of Curved Concrete Bridges via Bayesian Parameter Estimation Method
Proceedings of the 2 nd World Congress on Civil, Structural, and Environental Engineering (CSEE 17) Barcelona, Spain April 2 4, 2017 Paper No. ICSENM 110 ISSN: 2371-5294 DOI: 10.11159/icsen17.110 Seisic
More informationAccuracy of the Scaling Law for Experimental Natural Frequencies of Rectangular Thin Plates
The 9th Conference of Mechanical Engineering Network of Thailand 9- October 005, Phuket, Thailand Accuracy of the caling Law for Experiental Natural Frequencies of Rectangular Thin Plates Anawat Na songkhla
More informationA Modified Response Spectrum Analysis Procedure (MRSA) to Determine the Nonlinear Seismic Demands of Tall Buildings
Fawad A. Najam Pennung Warnitchai Asian Institute of Technology (AIT), Thailand Email: fawad.ahmed.najam@ait.ac.th A Modified Response Spectrum Analysis Procedure (MRSA) to Determine the Nonlinear Seismic
More informationDIRECT TORQUE CONTROL OF INDUCTION MACHINES CONSIDERING THE IRON LOSSES
DIRECT TORQUE CONTROL OF INDUCTION MACHINES CONSIDERING THE IRON LOSSES TRUC PHAM-DINH A thesis subitted in partial fulfilent of the requireents of Liverpool John Moores University for the degree of Doctor
More informationCE573 Structural Dynamics [Fall 2008]
CE573 Structural Dynaics [Fall 2008] 1) A rigid vehicle weighing 2000 lb, oving horizontally at a velocity of 12 ft/sec, is stopped by a barrier consisting of wire ropes stretched between two rigid anchors
More informationDAMAGE ASSESSMENT OF STRUCTURES AGAINST BLAST LOAD BASED ON MODE APPROXIMATION METHOD
DAMAGE ASSESSMENT OF STRUCTURES AGIANST BLAST LOAD BASED ON MODE APPROXIMATION METHOD HUANG XIN 11 DAMAGE ASSESSMENT OF STRUCTURES AGAINST BLAST LOAD BASED ON MODE APPROXIMATION METHOD HUANG XIN SCHOOL
More informationSoil-Structure Interaction in Nonlinear Pushover Analysis of Frame RC Structures: Nonhomogeneous Soil Condition
ABSTRACT: Soil-Structure Interaction in Nonlinear Pushover Analysis of Frame RC Structures: Nonhomogeneous Soil Condition G. Dok ve O. Kırtel Res. Assist., Department of Civil Engineering, Sakarya University,
More informationSTATIC NONLINEAR ANALYSIS. Advanced Earthquake Engineering CIVIL-706. Instructor: Lorenzo DIANA, PhD
STATIC NONLINEAR ANALYSIS Advanced Earthquake Engineering CIVIL-706 Instructor: Lorenzo DIANA, PhD 1 By the end of today s course You will be able to answer: What are NSA advantages over other structural
More informationStrain Rate and Temperature Effects on the Nonlinear Behavior of Woven Composites
ICCM 17 UK 29 Strain Rate and Teperature Effects on the Nonlinear Behavior of Woven Coposites Liqun Xing, Ken Reifsnider Departent of Mechanical Engineering University of South Carolina, Colubia, SC xingliqun@gail.edu
More informationStructural Health Monitoring of Aircraft Structure by Method of Electromechanical Impedance
Structural Health onitoring of Aircraft Structure by ethod of Electroechanical Ipedance Vitalijs PAVELKO, Ilars OZOLINSH, Sergejs KUZNETSOV, Igor PAVELKO Aviation Institute of Riga Technical University,
More informationCOMPONENT MODE SYNTHESIS, FIXED-INTERFACE MODEL Revision A
COMPONEN MODE SYNHESS, FXED-NERFACE MODEL Revision A By o rvine Eail: toirvine@aol.co February, ntroduction Coponent ode synthesis is a ethod for analyzing the dynaic behavior of a syste consisting of
More informationCONVERTING FORCED VIBRATIONS INDUCED IN PIEZOELECTRIC CANTILEVER PLATE INTO NANO ELECTRICAL POWER
International Journal of Mechanical Engineering and Technology (IJMET) Volue 9, Issue 11, Noveber 2018, pp. 146 160, Article ID: IJMET_09_11_017 Available online at http://www.iaee.co/ijet/issues.asp?jtype=ijmet&vtype=9&itype=11
More informationKINETIC THEORY. Contents
KINETIC THEORY This brief paper on inetic theory deals with three topics: the hypotheses on which the theory is founded, the calculation of pressure and absolute teperature of an ideal gas and the principal
More informationEFFECT OF WALL REINFORCEMENTS, APPLIED LATERAL FORCES AND VERTICAL AXIAL LOADS ON SEISMIC BEHAVIOR OF CONFINED CONCRETE MASONRY WALLS
EFFECT OF WALL REINFORCEMENTS, APPLIED LATERAL FORCES AND VERTICAL AXIAL LOADS ON SEISMIC BEHAVIOR OF CONFINED CONCRETE MASONRY WALLS 984 Koji YOSHIMURA 1, Kenji KIKUCHI 2, Masauki KUROKI 3, Lizhen LIU
More informationReducing Vibration and Providing Robustness with Multi-Input Shapers
29 Aerican Control Conference Hyatt Regency Riverfront, St. Louis, MO, USA June -2, 29 WeA6.4 Reducing Vibration and Providing Robustness with Multi-Input Shapers Joshua Vaughan and Willia Singhose Abstract
More informationPhysics 221B: Solution to HW # 6. 1) Born-Oppenheimer for Coupled Harmonic Oscillators
Physics B: Solution to HW # 6 ) Born-Oppenheier for Coupled Haronic Oscillators This proble is eant to convince you of the validity of the Born-Oppenheier BO) Approxiation through a toy odel of coupled
More informationEFFECT OF MATERIAL PROPERTIES ON VIBRATIONS OF NONSYMMETRICAL AXIALLY LOADED THIN-WALLED EULER-BERNOULLI BEAMS
Matheatical and Coputational Applications, Vol. 5, No., pp. 96-07, 00. Association for Scientific Research EFFECT OF MATERIAL PROPERTIES ON VIBRATIONS OF NONSYMMETRICAL AXIALLY LOADED THIN-WALLED EULER-BERNOULLI
More informationChapter 11: Vibration Isolation of the Source [Part I]
Chapter : Vibration Isolation of the Source [Part I] Eaple 3.4 Consider the achine arrangeent illustrated in figure 3.. An electric otor is elastically ounted, by way of identical isolators, to a - thick
More informationNonlinear Analysis of Reinforced Concrete Bridges under Earthquakes
6 th International Conference on Advances in Experimental Structural Engineering 11 th International Workshop on Advanced Smart Materials and Smart Structures Technology August 1-2, 2015, University of
More informationCOULD A VARIABLE MASS OSCILLATOR EXHIBIT THE LATERAL INSTABILITY?
Kragujevac J. Sci. 3 (8) 3-44. UDC 53.35 3 COULD A VARIABLE MASS OSCILLATOR EXHIBIT THE LATERAL INSTABILITY? Nebojša Danilović, Milan Kovačević and Vukota Babović Institute of Physics, Faculty of Science,
More informationModel Fitting. CURM Background Material, Fall 2014 Dr. Doreen De Leon
Model Fitting CURM Background Material, Fall 014 Dr. Doreen De Leon 1 Introduction Given a set of data points, we often want to fit a selected odel or type to the data (e.g., we suspect an exponential
More informationSeismic Performance of RC Building Using Spectrum Response and Pushover Analyses
Seismic Performance of RC Building Using Spectrum Response and Pushover Analyses Mehani Youcef (&), Kibboua Abderrahmane, and Chikh Benazouz National Earthquake Engineering Research Center (CGS), Algiers,
More informationPushover Seismic Analysis of Bridge Structures
Pushover Seismic Analysis of Bridge Structures Bernardo Frère Departamento de Engenharia Civil, Arquitectura e Georrecursos, Instituto Superior Técnico, Technical University of Lisbon, Portugal October
More informationON THE TWO-LEVEL PRECONDITIONING IN LEAST SQUARES METHOD
PROCEEDINGS OF THE YEREVAN STATE UNIVERSITY Physical and Matheatical Sciences 04,, p. 7 5 ON THE TWO-LEVEL PRECONDITIONING IN LEAST SQUARES METHOD M a t h e a t i c s Yu. A. HAKOPIAN, R. Z. HOVHANNISYAN
More informationSEISMIC SAFETY OF BRIDGE CRANE STEEL STRUCTURES OPERATING IN NPP
SEISMIC SAFETY OF BRIDGE CRANE STEEL STRUCTURES OPERATING IN NPP Kalin RADLOV*, Vesko PANOV** *University of Architecture, Civil Engineering and Geodesy Sofia, Bulgaria **Technical University Sofia, Bulgaria
More informationSEISMIC PERFORMANCE ESTIMATION OF ASYMMETRIC BUILDINGS BASED ON THE CAPACITY SPECTRUM METHOD
SEISMIC PERFORMACE ESTIMATIO OF ASYMMETRIC BUILDIGS BASED O THE CAPACITY SPECTRUM METHOD Tatsuya AZUHATA, Taiki SAITO, Masaharu TAKAYAMA And Katsumi AGAHARA 4 SUMMARY This paper presents the procedure
More informationResponse of Elastic and Inelastic Structures with Damping Systems to Near-Field and Soft-Soil Ground Motions
3 Response of Elastic and Inelastic Structures with Damping Systems to Near-Field and Soft-Soil Ground Motions Eleni Pavlou Graduate Student, Department of Civil, Structural & Environmental Engineering,
More information9 HOOKE S LAW AND SIMPLE HARMONIC MOTION
Experient 9 HOOKE S LAW AND SIMPLE HARMONIC MOTION Objectives 1. Verify Hoo s law,. Measure the force constant of a spring, and 3. Measure the period of oscillation of a spring-ass syste and copare it
More informationPHYS 102 Previous Exam Problems
PHYS 102 Previous Exa Probles CHAPTER 16 Waves Transverse waves on a string Power Interference of waves Standing waves Resonance on a string 1. The displaceent of a string carrying a traveling sinusoidal
More informationA DESIGN GUIDE OF DOUBLE-LAYER CELLULAR CLADDINGS FOR BLAST ALLEVIATION
International Journal of Aerospace and Lightweight Structures Vol. 3, No. 1 (2013) 109 133 c Research Publishing Services DOI: 10.3850/S201042862013000550 A DESIGN GUIDE OF DOUBLE-LAYER CELLULAR CLADDINGS
More informationa a a a a a a m a b a b
Algebra / Trig Final Exa Study Guide (Fall Seester) Moncada/Dunphy Inforation About the Final Exa The final exa is cuulative, covering Appendix A (A.1-A.5) and Chapter 1. All probles will be ultiple choice
More informationProc. of the IEEE/OES Seventh Working Conference on Current Measurement Technology UNCERTAINTIES IN SEASONDE CURRENT VELOCITIES
Proc. of the IEEE/OES Seventh Working Conference on Current Measureent Technology UNCERTAINTIES IN SEASONDE CURRENT VELOCITIES Belinda Lipa Codar Ocean Sensors 15 La Sandra Way, Portola Valley, CA 98 blipa@pogo.co
More information2nd Workshop on Joints Modelling Dartington April 2009 Identification of Nonlinear Bolted Lap Joint Parameters using Force State Mapping
Identification of Nonlinear Bolted Lap Joint Paraeters using Force State Mapping International Journal of Solids and Structures, 44 (007) 8087 808 Hassan Jalali, Haed Ahadian and John E Mottershead _ Γ
More informationAssessment of Nonlinear Static (Pushover) Procedures Using Time-History Direct Integration Analysis
Australian Journal of Basic and Applied Sciences, 7(8): 468-479, 2013 ISSN 1991-8178 Assessment of Nonlinear Static (Pushover) Procedures Using Time-History Direct Integration Analysis S. Taghavipour,
More informationDesign of Structures for Earthquake Resistance
NATIONAL TECHNICAL UNIVERSITY OF ATHENS Design of Structures for Earthquake Resistance Basic principles Ioannis N. Psycharis Lecture 3 MDOF systems Equation of motion M u + C u + K u = M r x g(t) where:
More informationEarthquake Loads According to IBC IBC Safety Concept
Earthquake Loads According to IBC 2003 The process of determining earthquake loads according to IBC 2003 Spectral Design Method can be broken down into the following basic steps: Determination of the maimum
More informationCOLUMN INTERACTION EFFECT ON PUSH OVER 3D ANALYSIS OF IRREGULAR STRUCTURES
th World Conference on Earthquake Engineering Vancouver, B.C., Canada August -6, Paper No. 6 COLUMN INTERACTION EFFECT ON PUSH OVER D ANALYSIS OF IRREGULAR STRUCTURES Jaime DE-LA-COLINA, MariCarmen HERNANDEZ
More informationSIMULATION OF THE HEATING STEP WITHIN THE THERMOFORMING PROCESS USING THE FINITE DIFFERENCE METHOD
SIMULATION OF THE HEATING STEP WITHIN THE THERMOFORMING PROCESS USING THE FINITE DIFFERENCE METHOD A. Fertschej 1 *, G.R. Langecker 1 University of Leoben artur.fertschej@u-leoben.at; Franz-Josef Strasse
More informationRandom Vibration Fatigue Analysis with LS-DYNA
1 th International LS-DYNA Users Conference Siulation() Rando Vibration Fatigue Analysis with LS-DYNA Arnaud Ringeval 1, Yun Huang 1 CIMES, France 36 rue Marc Lefrancq, Les Ateliers Nuériques, 593 Valenciennes,
More informationIMPORTANT FEATURES OF THE RESPONSE OF INELASTIC STRUCTURES TO NEAR-FIELD GROUND MOTION
IMPORTANT FEATURES OF THE RESPONSE OF INELASTIC STRUCTURES TO NEAR-FIELD GROUND MOTION Wilfred D IWAN 1, Ching-Tung HUANG 2 And Andrew C GUYADER 3 SUMMARY Idealized structural models are employed to reveal
More informationEVALUATION OF SECOND ORDER EFFECTS ON THE SEISMIC PERFORMANCE OF RC FRAMED STRUCTURES: A FRAGILITY ANALYSIS
13 th World Conference on Earthquake Engineering Vancouver, B.C., Canada August 1-6, 2004 Paper No. 428 EVALUATION OF SECOND ORDER EFFECTS ON THE SEISMIC PERFORMANCE OF RC FRAMED STRUCTURES: A FRAGILITY
More informationChapter 6 1-D Continuous Groups
Chapter 6 1-D Continuous Groups Continuous groups consist of group eleents labelled by one or ore continuous variables, say a 1, a 2,, a r, where each variable has a well- defined range. This chapter explores:
More informationA STUDY ON IMPROVEMENT OF PUSHOVER ANALYSIS
A SUDY ON IMPROVEMEN OF PUSHOVER ANALYSIS Pu YANG And Yayong WANG SUMMARY he static pushover analysis, POA, is becoming popular as a simplified computer method for seismic performance evaluation of structures.
More informationData-Driven Imaging in Anisotropic Media
18 th World Conference on Non destructive Testing, 16- April 1, Durban, South Africa Data-Driven Iaging in Anisotropic Media Arno VOLKER 1 and Alan HUNTER 1 TNO Stieltjesweg 1, 6 AD, Delft, The Netherlands
More informationCOS 424: Interacting with Data. Written Exercises
COS 424: Interacting with Data Hoework #4 Spring 2007 Regression Due: Wednesday, April 18 Written Exercises See the course website for iportant inforation about collaboration and late policies, as well
More information