SMASIS DEFINING AND INVESTIGATING NEW SYMMETRY CLASSES FOR THE NEXT GENERATION OF MAGNETORHEOLOGICAL ELASTOMERS
|
|
- Barrie Mason
- 6 years ago
- Views:
Transcription
1 Proceedings of the ASME 2009 Conference on Smart Materials, Adaptive Structures and Intelligent Systems SMASIS2009 September 20-24, 2009, Oxnard, California, USA SMASIS DEFINING AND INVESTIGATING NEW SYMMETRY CLASSES FOR THE NEXT GENERATION OF MAGNETORHEOLOGICAL ELASTOMERS Paris R. von Lockette, Rowan University Samuel Lofland, Rowan University Joseph Biggs, Rowan University 1 Copyright 2009 by ASME
2 ABSTRACT This work addresses the fundamental difference in behavior between magnetorheological elastomers (MREs) formed from soft-magnetic particles, whose behavior is driven by local demagnetizing effects and those formed with hard-magnetic particles that have a preferred magnetic axis and therefore generate magnetic torques at the particle level. This work explores the phenomena by defining and examining four classes of MREs based upon permutations of particle alignment - magnetization pairs, i.e. I-I for magnetically isotropic particles arranged isotropically (randomly, or unaligned), A-A for magnetically anisotropic particles arranged anisotropically (typically aligned in chains), etc. The distinctions are important since the particle-field interactions for each class differ substantially. The behavior of classes I-I and I-A are driven primarily by demagnetizing effects while classes I-A and A-A are driven by the torques produced in the particles.mre materials made with barium hexaferrite (BaM) (Classes A-A and I-A) and Fe powders (Classes A-I and I-I), aligned and unaligned, served as proxies for each of the four classes in this work. BaM, with saturation magnetization M sat = A/m and coercive field H c > A/m, provided the magnetically anisotropic behavior while iron, with M sat = A/m and H c < 2 10^3 A/m, provided the soft magnetic behavior. Experiments on materials with 30% particle concentrations showed that under uniform magnetic fields class A-A (aligned BaM) MREs were capable of large deflections in cantilever beam bending (deflections of 12mm for length 50mm and magnetic field A/m) whereas all other classes, including I-A (random BaM) MREs, showed none. Tip deflection varied linearly with applied field strength. Tip blocking-force versus deflection experiments were also conducted on cantilevered A-A specimens. These tests showed that tip force increased with decreasing free deflection and with increasing field strength. INTRODUCTION Magnetorheological elastomers (MREs) are a novel class of smart materials, comprised of magnetic particles in a non-magnetic rubbery matrix, which have gained renewed interest recently [1,2,3,4,5,6,7,8]. MREs are able to change Figure 1: Current literature on MRE behavior ascribes shear-stiffening behavior of MREs to the resistance of long chains of particles to shear deformation with respect to the applied magnetic field axis, H. their apparent shear stiffness under the influence of a magnetic field which has many controls applications including tunable vibration absorbers and active bushings[9,10]. Existing literature in the field generally ascribes the shear-stiffening behavior of MREs to the resistance of long chains of particles, formed while curing the material within a magnetic field of 1-2 MA/m, to deformation with respect to the magnetic field axis [11]. (See Figure 1). The perturbation of these chains drives the particles away from their preferred minimum energy state, thereby inducing an internal restorative force [12]. While it is true that the minimum energy state for a chain of particles is aligned with the external field, an examination of the driving magnetic phenomena at the particle level revels that soft- and hard-magnetic materials will behave substantially differently. The torque T acting on an individual particle is determined by T = M H where M is the magnetization of the particle and H the applied magnetic field. For soft-magnetic materials, such as iron, M aligns with H yielding T = 0 whereas for hardmagnetic materials M is independent of H such that generally T 0. The focus of this work is the examination of the resulting difference in behavior between materials made from hard- and soft-magnetic filler particles. Figure 2: Four classes of MRE materials as described by particle alignmentmagnetization pairs. Ellipses show magnetization axes. 2 Copyright 2009 by ASME
3 Magnetic filler particles may be classified as either anisotropic (A, hard-magnetic) or isotropic (I, soft-magnetic), defining two classifications based on particle magnetization. Additionally, particle arrangements provide two class distinctions: anisotropic for particles arranged in chains or isotropic for particles arranged randomly with no order. Together, this distinction yields a four classificationa of particles based on alignment-magnetization pairs, namely I-I, A-I, I-A, and A-A (Figure 2). EXPERIMENTAL METHODS For this work nominally 40-micron iron (Fe) particles served as the soft-magnetic filler particles (coercive fiels μ 0 H c < 2.5 mt) while nominally 40 micron M-type barium hexaferrite (BaM) particles served as the hard-magnetic filler (μ 0 H c > 0.4 T). Material classes A-A and A-I were produced by curing in μ 0 H ~ 2 T to produce anisotropy in particle arrangements while material classes I-I and I-A were cured as mixed in Earth s field. Dow Corning HS II silicone elastomer compound was used as the matrix material in a 30% v/v particle to matrix ratio. Figure 4: Class A A (BaM) sample 5 x 20 x 75 mm under 150 T. Graph paper scale is ¼ in. Class A A (shown) deforms while Classes A I, I A, and I I do not (not shown). RESULTS During the free cantilever bending test, only samples of class A-A showed deformation under a magnetic field. Figure 4 shows the deformed shape of the A-A sample at 0 H = 0.15 T. The tip deformation was linear with respect to field strength (Fig. 5). Figure 3: Schematic of cantilever bending experiment showing C shaped electromagnet, MRE sample with class poling direction (red), and magnetic flux direction (blue). A cantilever actuation test measuring the field dependence of the tip deflection was conducted on samples from all four classes using a C-shaped electromagnet as shown schematically in Figure 3. All samples had dimension mm 3 where 75 mm was the free cantilever length. The displacement was measured using an optical microscope, and the field strength was measured with a Lakeshore Gaussmeter. In addition, A blocking force test was conducted on the class A-A sample by placing a Shimpo model FGV-0.5x force gauge at specified distances from its tip. The sample was allowed to free deform until it contacted the force transducer which measured the applied force. Figure 5: Tip deflection versus field strength for class A-A sample in free cantilever bending experiment of Figure 3. Material classes A-I, I-I, and I-A showed no deformation for the range of field strengths tested. The blocking force test of the sample of class A-A (Fig. 6) showed an increase in force with increasing field strength and a decrease in force with increasing tip deflection. 3 Copyright 2009 by ASME
4 Figure 6: Blocking force vs. field applied strength at tip deflections shown for cantilever testing of class A-A (BaM) materials CONCLUSIONS The results presented show clear differences in behavior between the class A-A and classes A-I, I-I, and I-A samples. Class A-A samples produce actuation in cantilever bending whereas the other classes do not. No tip deflection was produced even in samples composed of the same magnetic filler particles, BaM, when particle arrangements were isotropic, class I-A. The lack of actuation in materials having the same BaM magnetic filler highlights the dual dependence on both particle magnetization and particle arrangement. One interpretation for class I-A (BaM) materials, is that while the individual particles have internal magnetization, their random arrangement yields zero net magnetization of the bulk and hence no internal torque en masse. An alternative view is that the individual torques generated at the particle level cancel and therefore generate no bulk response. The lack of actuation in classes I-I and A-I (Fe) materials supports the assertion that the soft-magnetic behavior of iron particles, regardless of alignment, yields no magnetic torque and thereby cannot generate an internal moment to cause deflection of the sample. The results of Figure 6 show the ability of the class A-A samples to do work further highlighting the difference between class A-A and the other classes. [3] David York, Xiaojie Wang, and Faramarz Gordaninejad, A new MR fluid elastomer vibration isolator, J. Intell. Mater. Syst. Struct. 18, 1221 (2007). [4] Hua xia Deng and Xing long Gong, Application of magnetorheological elastomer to vibration absorber, Communications in Nonlinear Science and Numerical Simulation, 13, 1938 (2008). [5] A. Albanese Lerner and K.A Cunefare, Performance of MRE based vibration absorbers, Intell. Mater. Syst. Struct. 19, 551 (2008). [6] Saul Opie and Yim Woosoon, A tunable vibration isolator using a magnetorheological elastomer with a field induced modulus bias, Proceedings of the ASME International Mechanical Engineering Congress and Exposition, IMECE 2007, 99 (2008). [7] G.Y. Zhou, and Q. Wang, Q. Use of magnetorheological elastomer in an adaptive sandwich beam with conductive skins. Part I: Magnetoelastic loads in conductive skins, Inter. J. Solids Struct. 43, 5386 (2006). [8]G.Y. Zhou, and Q. Wang, Magnetorheological elastomerbased smart sandwich beams with nonconductive skins, Smart Mater. Struct., 14, , p [9] G Y Zhou Shear properties of a magnetorheological elastomer, Smart Mater. Struct (2002) [10] Hua Xia Gong Deng, Wang Xing Long, and Lian Hua, Development of an adaptive tuned vibration absorber with magnetorheological elastomer, Smart Mater. Struct. 15, p N (2006). [11] L Chen, X L Gong, W H Li, Microstructures and viscoelastic properties of anisotropic magnetorheological elastomers, Smart Mater. Struct. 16 p (2007) [12] Y Shen, M F Golnaraghi, G R Heppler, Experimental Research and Modeling of Magnetorheological Elastomers, Journal of Intelligent Material Systems and Structures 15 p (2004) ACKNOWLEDGEMENTS The authors would like to thank several students for their support: William Hargrave, Rocco Bravaco, Kevin Anderson, Taylor Kirk, Sean Meehan, Joseph Urcinas. REFERENCES [1] T. Lindroos, S. Aalto, E. Jarvinen, T. Karna, M. Meinander, and T. Kallio, Dynamic compression testing of a tunable spring element consisting of a magnetorheological elastomer, Smart Mater. Struct. 16, 506 (2004). [2]G.Y. Zhou, and Q. Wang, Magnetorheological elastomerbased smart sandwich beams with nonconductive skins, Smart Mater. Struct., 14, , p Copyright 2009 by ASME
5 1 T. Lindroos, S. Aalto, E. Jarvinen, T. Karna, M. Meinander, and T. Kallio, Dynamic compression testing of a tunable spring element consisting of a magnetorheological elastomer, Smart Mater. Struct. 16, 506 (2004). 2 G.Y. Zhou, and Q. Wang, Magnetorheological elastomer based smart sandwich beams with nonconductive skins, Smart Mater. Struct., 14, , p David York, Xiaojie Wang, and Faramarz Gordaninejad, A new MR fluid elastomer vibration isolator, J. Intell. Mater. Syst. Struct. 18, 1221 (2007). 4 Hua xia Deng and Xing long Gong, Application of magnetorheological elastomer to vibration absorber, Communications in Nonlinear Science and Numerical Simulation, 13, 1938 (2008). 5 A. Albanese Lerner and K.A Cunefare, Performance of MRE based vibration absorbers, Intell. Mater. Syst. Struct. 19, 551 (2008). 6 Saul Opie and Yim Woosoon, A tunable vibration isolator using a magnetorheological elastomer with a field induced modulus bias, Proceedings of the ASME International Mechanical Engineering Congress and Exposition, IMECE 2007, 99 (2008). 7 G.Y. Zhou, and Q. Wang, Q. Use of magnetorheological elastomer in an adaptive sandwich beam with conductive skins. Part I: Magnetoelastic loads in conductive skins, Inter. J. Solids Struct. 43, 5386 (2006). 8 G.Y. Zhou, and Q. Wang, Magnetorheological elastomer based smart sandwich beams with nonconductive skins, Smart Mater. Struct., 14, , p G Y Zhou Shear properties of a magnetorheological elastomer, Smart Mater. Struct (2002) 10 Hua Xia Gong Deng, Wang Xing Long, and Lian Hua, Development of an adaptive tuned vibration absorber with magnetorheological elastomer, Smart Mater. Struct. 15, p N (2006). 11 L Chen, X L Gong, W H Li, Microstructures and viscoelastic properties of anisotropic magnetorheological elastomers, Smart Mater. Struct. 16 p (2007) 12 Y Shen, M F Golnaraghi, G R Heppler, Experimental Research and Modeling of Magnetorheological Elastomers, Journal of Intelligent Material Systems and Structures 15 p (2004) 5 Copyright 2009 by ASME
ACTUATION BEHAVIOR IN PATTERNED MAGNETORHEOLOGICAL ELASTOMERS: SIMULATION, EXPERIMENT, AND MODELING
Proceedings of the ASME 2012 Conference on Smart Materials, Adaptive Structures and Intelligent Systems SMASIS2012 September 19-21, 2012, Stone Mountain, Georgia, USA SMASIS2012-8143 ACTUATION BEHAVIOR
More informationMagneto-elastic behavior in hard- and soft-mre's including demagnetizing effects
Rowan University Rowan Digital Works Theses and Dissertations 8-21-2012 Magneto-elastic behavior in hard- and soft-mre's including demagnetizing effects Juan Roche Follow this and additional works at:
More informationUniversity of Wollongong. Research Online
University of Wollongong Research Online Faculty of Informatics - Papers (Archive) Faculty of Engineering and Information Sciences 2011 Experimental investigation of the vibration characteristics of a
More informationNumerical Analysis on Magnetic-induced Shear Modulus of Magnetorheological Elastomers Based on Multi-chain Model
CHINESE JOURNAL OF CHEMICAL PHYSICS VOLUME 19, NUMBER 2 APRIL 27, 2006 ARTICLE Numerical Analysis on Magnetic-induced Shear Modulus of Magnetorheological Elastomers Based on Multi-chain Model Ying-shun
More informationSCIENCE CHINA Technological Sciences
SCIENCE CHINA Technological Sciences RESEARCH PAPER April 013 Vol.56 No.4: 878 883 doi: 10.1007/s11431-013-5168-7 Nonlinear dynamic characteristics of magneto-rheological visco-elastomers YING ZuGuang
More informationThe magnetic field dependent dynamic properties of magnetorheological elastomers based on
Home Search Collections Journals About Contact us My IOPscience The magnetic field dependent dynamic properties of magnetorheological elastomers based on hard magnetic particles This content has been downloaded
More informationOn the stiffening effect of magneto-rheological elastomers
On the stiffening effect of magneto-rheological elastomers Yi Han a, Wei Hong a *, LeAnn E. Faidley b a Department of Aerospace Engineering, Iowa State University, Ames, IA 511, USA b Department of Chemistry
More informationEffect of the elastomer stiffness and coupling agents on rheological properties of magnetorheological elastomers
Materials Characterisation V 263 Effect of the elastomer stiffness and coupling agents on rheological properties of magnetorheological elastomers A. Boczkowska & S. F. Awietjan Faculty of Materials Science
More informationEffect of Cross-Link Density of the Matrix on the Damping Properties of Magnetorheological Elastomers
pubs.acs.org/iecr Effect of Cross-Link Density of the Matrix on the Damping Properties of Magnetorheological Elastomers Yanceng Fan, Xinglong Gong,* Shouhu Xuan,* Lijun Qin, and Xiaofeng Li CAS Key Laboratory
More informationMagnetorheological elastomer and its application on impact buffer
Journal of Physics: Conference Series Magnetorheological elastomer and its application on impact buffer To cite this article: J Fu et al 0 J. Phys.: Conf. Ser. 4 00 View the article online for updates
More informationThe performance of a magnetorheological fluid in squeeze mode
The performance of a magnetorheological fluid in squeeze mode Abstract. In a magnetorheological (MR) fluid, the rheological properties can be changed in a controlled way, the changes being reversible and
More informationMECHANICAL CHARACTERISTICS OF STARCH BASED ELECTRORHEOLOGICAL FLUIDS
8 th International Machine Design and Production Conference 427 September 9-11, 1998 Ankara TURKEY ABSTRACT MECHANICAL CHARACTERISTICS OF STARCH BASED ELECTRORHEOLOGICAL FLUIDS E. R. TOPCU * and S. KAPUCU
More informationDEPARTMENT OF MECHANICAL ENIGINEERING, UNIVERSITY OF ENGINEERING & TECHNOLOGY LAHORE (KSK CAMPUS).
DEPARTMENT OF MECHANICAL ENIGINEERING, UNIVERSITY OF ENGINEERING & TECHNOLOGY LAHORE (KSK CAMPUS). Lab Director: Coordinating Staff: Mr. Muhammad Farooq (Lecturer) Mr. Liaquat Qureshi (Lab Supervisor)
More informationMagnetorheological behaviour of magnetic carrageenan gels against shear and compression strains
e-polymers 2011, no. 034 http://www.e-polymers.org ISSN 1618-7229 Magnetorheological behaviour of magnetic carrageenan gels against shear and compression strains Keisuke Negami, Tetsu Mitsumata * * Department
More informationPIEZOELECTRIC TECHNOLOGY PRIMER
PIEZOELECTRIC TECHNOLOGY PRIMER James R. Phillips Sr. Member of Technical Staff CTS Wireless Components 4800 Alameda Blvd. N.E. Albuquerque, New Mexico 87113 Piezoelectricity The piezoelectric effect is
More informationLecture 13: Magnetic Sensors & Actuators
MECH 466 Microelectromechanical Systems University of Victoria Dept. of Mechanical Engineering Lecture 13: Magnetic Sensors & Actuators 1 Magnetic Fields Magnetic Dipoles Magnetization Hysteresis Curve
More informationCHARACTERIZATION OF ADAPTIVE MAGNETOELASTIC METAMATERIALS UNDER APPLIED MAGNETIC FIELDS
Proceedings of the ASME 2016 Conference on Smart Materials, Adaptive Structures and Intelligent Systems SMASIS2016 September 28-30, 2016, Stowe, VT, USA SMASIS2016-9252 CHARACTERIZATION OF ADAPTIVE MAGNETOELASTIC
More informationAdaptive magnetoelastic metamaterials: A new class of. of magnetorheological elastomers. Ryan L Harne, Zhangxian Deng and Marcelo J Dapino
Original Article Adaptive magnetoelastic metamaterials: A new class of magnetorheological elastomers Journal of Intelligent Material Systems and Structures 2018, Vol. 29(2) 265 278 Ó The Author(s) 2017
More informationUniversity Of Glasgow. School of Engineering. Department of Mechanical Engineering. Final Year Project
University Of Glasgow School of Engineering Department of Mechanical Engineering Final Year Project Manufacture and Characterisation of Magneto-Rheological Elastomers By Mr Bruce Miller Supervised by Dr
More informationThe development of an adaptive tuned magnetorheological elastomer absorber working in squeeze mode
University of Wollongong Research Online Faculty of Engineering and Information Sciences - Papers: Part A Faculty of Engineering and Information Sciences 2014 The development of an adaptive tuned magnetorheological
More informationExploring the vibration control potential of magneto-sensitive rubber
Exploring the vibration control potential of magneto-sensitive rubber Peter Blom Stockholm 2005 Licentiate Thesis Royal Institute of Technology School of Engineering Science Department of Aeronautical
More informationVibration characteristics of MR cantilever sandwich beams: experimental study
Loughborough University Institutional Repository Vibration characteristics of MR cantilever sandwich beams: experimental study This item was submitted to Loughborough University's Institutional Repository
More informationEnergy balance in self-powered MR damper-based vibration reduction system
BULLETIN OF THE POLISH ACADEMY OF SCIENCES TECHNICAL SCIENCES, Vol. 59, No. 1, 2011 DOI: 10.2478/v10175-011-0011-4 Varia Energy balance in self-powered MR damper-based vibration reduction system J. SNAMINA
More informationMCE603: Interfacing and Control of Mechatronic Systems
MCE603: Interfacing and Control of Mechatronic Systems Chapter 7: Actuators and Sensors Topic 7d: Piezoelectric Actuators. Reference: Various articles. Cleveland State University Mechanical Engineering
More informationCHAPTER 4 DESIGN AND ANALYSIS OF CANTILEVER BEAM ELECTROSTATIC ACTUATORS
61 CHAPTER 4 DESIGN AND ANALYSIS OF CANTILEVER BEAM ELECTROSTATIC ACTUATORS 4.1 INTRODUCTION The analysis of cantilever beams of small dimensions taking into the effect of fringing fields is studied and
More informationApparent stress-strain relationships in experimental equipment where magnetorheological fluids operate under compression mode
Apparent stress-strain relationships in experimental equipment where magnetorheological fluids operate under compression mode S A Mazlan, N B Ekreem and A G Olabi School of Mechanical and Manufacturing
More informationTORQUE CAPACITY ENHANCEMENT OF A MAGNETORHEOLOGICAL FLUID CLUTCH USING THE SQUEEZE-STRENGTHEN EFFECT
International Workshop SMART MATERIALS, STRUCTURES & NDT in AEROSPACE Conference NDT in Canada 2011 2-4 November 2011, Montreal, Quebec, Canada TORQUE CAPACITY ENHANCEMENT OF A MAGNETORHEOLOGICAL FLUID
More informationThis article appeared in a journal published by Elsevier. The attached copy is furnished to the author for internal non-commercial research and
This article appeared in a journal published by Elsevier. The attached copy is furnished to the author for internal non-commercial research and education use, including for instruction at the authors institution
More informationInstitute of Science and Engineering, Kanazawa University, Kakuma-machi, Kanazawa, Ishikawa , Japan
Shock and Vibration Volume 15, Article ID 67658, 11 pages http://dx.doi.org/1.1155/15/67658 Research Article Design of a Real-Time Adaptively Tuned Dynamic Vibration Absorber with a Variable Stiffness
More informationFlexural properties of polymers
A2 _EN BUDAPEST UNIVERSITY OF TECHNOLOGY AND ECONOMICS FACULTY OF MECHANICAL ENGINEERING DEPARTMENT OF POLYMER ENGINEERING Flexural properties of polymers BENDING TEST OF CHECK THE VALIDITY OF NOTE ON
More informationFinite Element Analysis of Piezoelectric Cantilever
Finite Element Analysis of Piezoelectric Cantilever Nitin N More Department of Mechanical Engineering K.L.E S College of Engineering and Technology, Belgaum, Karnataka, India. Abstract- Energy (or power)
More informationMRE properties under shear and squeeze modes and applications
University of Wollongong Research Online Faculty of Engineering - Papers (Archive) Faculty of Engineering and Information Sciences 29 MRE properties under shear and squeeze modes and applications Kristin
More informationFaculty of Mechanical Engineering, Technical University of Liberec Ph.D. Thesis Topics for academic year 2018/2019. Study programme: Applied Mechanics
Thesis Topics for academic year 2018/2019 Study programme: Applied Mechanics Téma disertační práce Školitel Katedra 1. Research on mechanical properties of vibration isolation materials, modelling and
More informationMeasurement Techniques for Engineers. Motion and Vibration Measurement
Measurement Techniques for Engineers Motion and Vibration Measurement Introduction Quantities that may need to be measured are velocity, acceleration and vibration amplitude Quantities useful in predicting
More informationLecture 19. Measurement of Solid-Mechanical Quantities (Chapter 8) Measuring Strain Measuring Displacement Measuring Linear Velocity
MECH 373 Instrumentation and Measurements Lecture 19 Measurement of Solid-Mechanical Quantities (Chapter 8) Measuring Strain Measuring Displacement Measuring Linear Velocity Measuring Accepleration and
More informationDESIGN, FABRICATION AND ELECTROMECHANICAL CHARACTERISTICS OF A MEMS BASED MICROMIRROR
XIX IMEKO World Congress Fundamental and Applied Metrology September 6 11, 2009, Lisbon, Portugal DESIGN, FABRICATION AND ELECTROMECHANICAL CHARACTERISTICS OF A MEMS BASED MICROMIRROR Talari Rambabu 1,
More informationAERO 214. Lab II. Measurement of elastic moduli using bending of beams and torsion of bars
AERO 214 Lab II. Measurement of elastic moduli using bending of beams and torsion of bars BENDING EXPERIMENT Introduction Flexural properties of materials are of interest to engineers in many different
More informationPresented By: EAS 6939 Aerospace Structural Composites
A Beam Theory for Laminated Composites and Application to Torsion Problems Dr. BhavaniV. Sankar Presented By: Sameer Luthra EAS 6939 Aerospace Structural Composites 1 Introduction Composite beams have
More informationSlanted Functional Gradient Micropillars for Optimal Bioinspired Dry
Supporting Information for Slanted Functional Gradient Micropillars for Optimal Bioinspired Dry Adhesion Zhengzhi Wang * Department of Engineering Mechanics, School of Civil Engineering, Wuhan University,
More informationLinear magneto-viscoelastic model based on magnetic permeability components for anisotropic magnetorheological elastomers
Linear magneto-viscoelastic model based on magnetic permeability components for anisotropic magnetorheological elastomers I. Agirre-Olabide, P. Kuzhir, M.J. Elejabarrieta To cite this version: I. Agirre-Olabide,
More informationCHAPTER 5 FIXED GUIDED BEAM ANALYSIS
77 CHAPTER 5 FIXED GUIDED BEAM ANALYSIS 5.1 INTRODUCTION Fixed guided clamped and cantilever beams have been designed and analyzed using ANSYS and their performance were calculated. Maximum deflection
More informationElectromechanical Finite Element Modeling of Unstiffened Smart Steel Shear Walls (SSSWs)
Electromechanical Finite Element Modeling of Unstiffened Smart Steel Shear Walls (SSSWs) Y. Shahbazi 1, M. Eghbalian 2, M.R. Chenaghlou 3, K.Abedi 4 1- PhD Student of structural Engineering, Sahand University
More informationImaging Methods: Scanning Force Microscopy (SFM / AFM)
Imaging Methods: Scanning Force Microscopy (SFM / AFM) The atomic force microscope (AFM) probes the surface of a sample with a sharp tip, a couple of microns long and often less than 100 Å in diameter.
More informationFabrication and characterization of isotropic magnetorheological elastomers
Polymer Testing 24 (2005) 669 676 Material Behaviour Fabrication and characterization of isotropic magnetorheological elastomers X.L. Gong*, X.Z. Zhang, P.Q. Zhang CAS Key Laboratory of Mechanical Behavior
More information1.1 OBJECTIVE AND CONTENTS OF THE BOOK
1 Introduction 1.1 OBJECTIVE AND CONTENTS OF THE BOOK Hysteresis is a nonlinear phenomenon exhibited by systems stemming from various science and engineering areas: under a low-frequency periodic excitation,
More informationFINITE ELEMENT MODELLING OF COMPOSITES USING PIEZOELECTRIC MATERIAL
International Journal of Engineering Research and General Science Volume 3, Issue 4, July-August, 2015 FINITE ELEMENT MODELLING OF COMPOSITES USING PIEZOELECTRIC MATERIAL K.TEJASWINI, tejaswinikota11@gmail.com.,
More informationIf the number of unknown reaction components are equal to the number of equations, the structure is known as statically determinate.
1 of 6 EQUILIBRIUM OF A RIGID BODY AND ANALYSIS OF ETRUCTURAS II 9.1 reactions in supports and joints of a two-dimensional structure and statically indeterminate reactions: Statically indeterminate structures
More informationSmall-Scale Effect on the Static Deflection of a Clamped Graphene Sheet
Copyright 05 Tech Science Press CMC, vol.8, no., pp.03-7, 05 Small-Scale Effect on the Static Deflection of a Clamped Graphene Sheet G. Q. Xie, J. P. Wang, Q. L. Zhang Abstract: Small-scale effect on the
More informationBending Load & Calibration Module
Bending Load & Calibration Module Objectives After completing this module, students shall be able to: 1) Conduct laboratory work to validate beam bending stress equations. 2) Develop an understanding of
More informationA novel magnetorheological elastomer isolator with negative changing stiffness for vibration reduction
University of Wollongong Research Online Australian Institute for Innovative Materials - Papers Australian Institute for Innovative Materials 214 A novel magnetorheological elastomer isolator with negative
More informationMidterm 2 PROBLEM POINTS MAX
Midterm 2 PROBLEM POINTS MAX 1 30 2 24 3 15 4 45 5 36 1 Personally, I liked the University; they gave us money and facilities, we didn't have to produce anything. You've never been out of college. You
More informationMicromechanical modeling and simulation of piezoceramic materials
Micromechanical modeling and simulation of piezoceramic materials B. Delibas 1, A. Arockia Rajan 1 & W. Seemann 2 1 Workgroup for Machine Dynamics, Technical University of Kaiserslautern, Germany 2 Institut
More informationMagnetostriction and Field Stiffening of Magneto-Active Elastomers
International Journal of Applied Mechanics Vol. 7, No. 1 (2015) 1550001 (16 pages) c Imperial College Press DOI: 10.1142/S1758825115400013 Magnetostriction and Field Stiffening of Magneto-Active Elastomers
More informationGATE SOLUTIONS E N G I N E E R I N G
GATE SOLUTIONS C I V I L E N G I N E E R I N G From (1987-018) Office : F-16, (Lower Basement), Katwaria Sarai, New Delhi-110016 Phone : 011-65064 Mobile : 81309090, 9711853908 E-mail: info@iesmasterpublications.com,
More informationFor an imposed stress history consisting of a rapidly applied step-function jump in
Problem 2 (20 points) MASSACHUSETTS INSTITUTE OF TECHNOLOGY DEPARTMENT OF MECHANICAL ENGINEERING CAMBRIDGE, MASSACHUSETTS 0239 2.002 MECHANICS AND MATERIALS II SOLUTION for QUIZ NO. October 5, 2003 For
More informationThe effect of friction on magnetorheological fluids
University of Wollongong Research Online Faculty of Engineering - Papers (Archive) Faculty of Engineering and Information Sciences 2008 The effect of friction on magnetorheological fluids W H. Li University
More informationActive elastomer components based on dielectric elastomers
Gummi Fasern Kunststoffe, 68, No. 6, 2015, pp. 412 415 Active elastomer components based on dielectric elastomers W. Kaal and S. Herold Fraunhofer Institute for Structural Durability and System Reliability
More informationA dynamic absorber with a soft magnetorheological elastomer for powertrain vibration suppression
dynamic absorber with a soft magnetorheological elastomer for powertrain vibration suppression N Hoang,, N Zhang and H Du School of Electrical, Mechanical and Mechatronics Systems, Faculty of Engineering
More informationResistance of a commercial magnetorheological fluid to penetration
Home Search Collections Journals About Contact us My IOPscience Resistance of a commercial magnetorheological fluid to penetration This article has been downloaded from IOPscience. Please scroll down to
More informationSensing behavior of ferromagnetic shape memory Ni-Mn-Ga
Sensing behavior of ferromagnetic shape memory Ni-Mn-Ga Neelesh N. Sarawate a and Marcelo J. Dapino a a Mechanical Engineering Department, The Ohio State University, 65 Ackerman Road, Columbus OH 4322,
More information1.103 CIVIL ENGINEERING MATERIALS LABORATORY (1-2-3) Dr. J.T. Germaine Spring 2004 LABORATORY ASSIGNMENT NUMBER 6
1.103 CIVIL ENGINEERING MATERIALS LABORATORY (1-2-3) Dr. J.T. Germaine MIT Spring 2004 LABORATORY ASSIGNMENT NUMBER 6 COMPRESSION TESTING AND ANISOTROPY OF WOOD Purpose: Reading: During this laboratory
More informationApplication of Finite Element Method to Create Animated Simulation of Beam Analysis for the Course of Mechanics of Materials
International Conference on Engineering Education and Research "Progress Through Partnership" 4 VSB-TUO, Ostrava, ISSN 156-35 Application of Finite Element Method to Create Animated Simulation of Beam
More informationOPTI 521, Optomechanical Design, Technical Paper Reviews, Dr. Jim Burge, 2011
Synopsis of Predicting the vibration characteristics of elements incorporating Incompressible and Compressible Viscoelastic Materials Abstract Jacob Etter OPTI 521, University of Arizona, College of Optical
More informationAN ANALYTICAL MODEL FOR DEFLECTION OF LATERALLY LOADED PILES
Journal of Marine Science and Technology, Vol. 11, No. 3, pp. 149-154 (003) 149 AN ANAYTICA MODE FOR DEFECTION OF ATERAY OADED PIES Jen-Cheng iao* and San-Shyan in** Key words: pile, lateral load, inclinometer,
More informationAnisotropy properties of magnetic colloidal materials
INSTITUTE OF PHYSICS PUBLISHING JOURNAL OF PHYSICS D: APPLIED PHYSICS J. Phys. D: Appl. Phys. 36 (2003) L10 L14 PII: S0022-3727(03)53088-1 RAPID COMMUNICATION Anisotropy properties of magnetic colloidal
More informationSoftware Verification
EXAMPLE 1-026 FRAME MOMENT AND SHEAR HINGES EXAMPLE DESCRIPTION This example uses a horizontal cantilever beam to test the moment and shear hinges in a static nonlinear analysis. The cantilever beam has
More information142. Determination of reduced mass and stiffness of flexural vibrating cantilever beam
142. Determination of reduced mass and stiffness of flexural vibrating cantilever beam Tamerlan Omarov 1, Kuralay Tulegenova 2, Yerulan Bekenov 3, Gulnara Abdraimova 4, Algazy Zhauyt 5, Muslimzhan Ibadullayev
More informationStudy of the Tip Deflection in Static State of a Piezoelectric Polymer based Bimorph Actuator with Varying Thickness and Length Ratios.
International Journal of Engineering Trends and Technology (IJETT) - Volume4 Issue6- June 20 Study of the Tip Deflection in Static State of a Piezoelectric Polymer based Bimorph Actuator with Varying Thickness
More information9-11 April 2008 Measurement of Large Forces and Deflections in Microstructures
9-11 April 28 Measurement of Large Forces and Deflections in Microstructures Kai Axel Hals 1, Einar Halvorsen, and Xuyuan Chen Institute for Microsystem Technology, Vestfold University College, P.O. Box
More informationModule-16. Magnetic properties
Module-16 Magnetic properties Contents 1) Dia-, Para-, and Ferro-magnetism (Antiferro-magnetism and ferri-magnetism) 2) Influence of temperature on magnetic behavior 3) Domains and Hysteresis Introduction
More informationEE C247B / ME C218 INTRODUCTION TO MEMS DESIGN SPRING 2014 C. Nguyen PROBLEM SET #4
Issued: Wednesday, Mar. 5, 2014 PROBLEM SET #4 Due (at 9 a.m.): Tuesday Mar. 18, 2014, in the EE C247B HW box near 125 Cory. 1. Suppose you would like to fabricate the suspended cross beam structure below
More informationMagnetic nanoparticles containing soft-hard diblock
Electronic Supplementary Material (ESI) for Nanoscale. This journal is The Royal Society of Chemistry 2018 Electronic Supplementary Information Magnetic nanoparticles containing soft-hard diblock copolymer
More informationMechatronics II Laboratory EXPERIMENT #1: FORCE AND TORQUE SENSORS DC Motor Characteristics Dynamometer, Part I
Mechatronics II Laboratory EXPEIMENT #1: FOCE AND TOQUE SENSOS DC Motor Characteristics Dynamometer, Part I Force Sensors Force and torque are not measured directly. Typically, the deformation or strain
More informationLorentz Contact Resonance for viscoelastic measurements of polymer blends
The nanoscale spectroscopy company The world leader in nanoscale IR spectroscopy Lorentz Contact Resonance for viscoelastic measurements of polymer blends Lorentz Contact Resonance (LCR) reliably compares
More informationDeflections and Strains in Cracked Shafts Due to Rotating Loads: A Numerical and Experimental Analysis
International Journal of Rotating Machinery, 9: 303 311, 2003 Copyright c Taylor & Francis Inc. ISSN: 1023-621X DOI: 10.1080/10236210390147416 Deflections and Strains in Cracked Shafts Due to Rotating
More informationExperimental investigation on monotonic performance of steel curved knee braces for weld-free beam-to-column connections
Experimental investigation on monotonic performance of steel curved knee braces for weld-free beam-to-column connections *Zeyu Zhou 1) Bo Ye 2) and Yiyi Chen 3) 1), 2), 3) State Key Laboratory of Disaster
More information9 MECHANICAL PROPERTIES OF SOLIDS
9 MECHANICAL PROPERTIES OF SOLIDS Deforming force Deforming force is the force which changes the shape or size of a body. Restoring force Restoring force is the internal force developed inside the body
More informationExperimental Lab. Principles of Superposition
Experimental Lab Principles of Superposition Objective: The objective of this lab is to demonstrate and validate the principle of superposition using both an experimental lab and theory. For this lab you
More informationOptimal Location of an Active Segment of Magnetorheological Fluid Layer in a Sandwich Plate
Acta Montanistica Slovaca Ročník 16 (2011), číslo 1, 95-100 Optimal Location of an Active Segment of Magnetorheological Fluid Layer in a Sandwich Plate Jacek Snamina 1 Abstract: In the present study a
More informationMembers Subjected to Torsional Loads
Members Subjected to Torsional Loads Torsion of circular shafts Definition of Torsion: Consider a shaft rigidly clamped at one end and twisted at the other end by a torque T = F.d applied in a plane perpendicular
More information2044. Dynamics analysis for the clamping mechanisms of a rotary inchworm piezoelectric motor
2044. Dynamics analysis for the clamping mechanisms of a rotary inchworm piezoelectric motor Yongfei Gu 1, Jichun Xing 2 1, 2 School of Mechanical Engineering, Yanshan University, Qinhuangdao, China 1
More informationIdentification of model parameters of a sandwich beam incorporating magnetorheological fluid
XXIV Symposium Vibrations in Physical Systems, Poznan Bedlewo, May 12-15, 2010 Identification of model parameters of a sandwich beam incorporating magnetorheological fluid Bogdan SAPIŃSKI AGH University
More informationComputational Analysis for Composites
Computational Analysis for Composites Professor Johann Sienz and Dr. Tony Murmu Swansea University July, 011 The topics covered include: OUTLINE Overview of composites and their applications Micromechanics
More informationINTRODUCTION TO PIEZO TRANSDUCERS
PIEZO SYSTEMS, INC. 65 Tower Office Park Woburn, MA 01801 USA Tel: 781 933 4850 Fax: 781 933 4743 email: sales@piezo.com Find Search for a product or category HOME PRODUCTS CUSTOM OEM CATALOG TECHNICAL
More informationMathematical Modeling of Displacements and Thermal Stresses in Anisotropic Materials (Sapphire) in Cooling
Mathematical Modeling of Displacements and Thermal Stresses in Anisotropic Materials (Sapphire) in Cooling Timo Tiihonen & Tero Tuovinen September 11, 2015 European Study Group with Industry, ESGI 112,
More informationSTRESS STRAIN AND DEFORMATION OF SOLIDS, STATES OF STRESS
1 UNIT I STRESS STRAIN AND DEFORMATION OF SOLIDS, STATES OF STRESS 1. Define: Stress When an external force acts on a body, it undergoes deformation. At the same time the body resists deformation. The
More informationFoundations of MEMS. Chang Liu. McCormick School of Engineering and Applied Science Northwestern University. International Edition Contributions by
Foundations of MEMS Second Edition Chang Liu McCormick School of Engineering and Applied Science Northwestern University International Edition Contributions by Vaishali B. Mungurwadi B. V. Bhoomaraddi
More informationDesign and Analysis of Various Microcantilever Shapes for MEMS Based Sensing
ScieTech 014 Journal of Physics: Conference Series 495 (014) 01045 doi:10.1088/174-6596/495/1/01045 Design and Analysis of Various Microcantilever Shapes for MEMS Based Sensing H. F. Hawari, Y. Wahab,
More informationSupplementary figures
Supplementary figures Supplementary figure 1: The fang model (longitudinal section) used for the stiffness analysis. The base of the fang is considered fixed (i.e. zero displacement constraint) and the
More informationFoundations of Ultraprecision Mechanism Design
Foundations of Ultraprecision Mechanism Design S.T. Smith University of North Carolina at Charlotte, USA and D.G. Chetwynd University of Warwick, UK GORDON AND BREACH SCIENCE PUBLISHERS Switzerland Australia
More informationTESTING AND ANALYSIS OF COMPOSITE SANDWICH BEAMS
TESTING AND ANALYSIS OF COMPOSITE SANDWICH BEAMS I. M. Daniel, J. L. Abot, and K. A. Wang Walter P. Murphy Professor, Departments of Civil and Mechanical Engineering, Robert R. McCormick School of Engineering
More informationMODELING AND FEM ANALYSIS OF DYNAMIC PROPERTIES OF THERMALLY OPTIMAL COMPOSITE MATERIALS
11th World Congress on Computational Mechanics (WCCM XI) 5th European Conference on Computational Mechanics (ECCM V) 6th European Conference on Computational Fluid Dynamics (ECFD VI) E. Oñate, J. Oliver
More informationA Vertical Electrostatic Actuator with Extended Digital Range via Tailored Topology
A Vertical Electrostatic Actuator with Extended Digital Range via Tailored Topology Yanhang Zhang and Martin L. Dunn Department of Mechanical Engineering University of Colorado at Boulder Boulder, CO 80309
More information1439. Numerical simulation of the magnetic field and electromagnetic vibration analysis of the AC permanent-magnet synchronous motor
1439. Numerical simulation of the magnetic field and electromagnetic vibration analysis of the AC permanent-magnet synchronous motor Bai-zhou Li 1, Yu Wang 2, Qi-chang Zhang 3 1, 2, 3 School of Mechanical
More informationLecture 15 Strain and stress in beams
Spring, 2019 ME 323 Mechanics of Materials Lecture 15 Strain and stress in beams Reading assignment: 6.1 6.2 News: Instructor: Prof. Marcial Gonzalez Last modified: 1/6/19 9:42:38 PM Beam theory (@ ME
More informationExperimental Study and Numerical Simulation on Steel Plate Girders With Deep Section
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 informationNonlinear vibration energy harvesting based on variable double well potential function
Binghamton University The Open Repository @ Binghamton (The ORB) Mechanical Engineering Faculty Scholarship Mechanical Engineering 2016 Nonlinear vibration energy harvesting based on variable double well
More informationDeflections and Strains in Cracked Shafts due to Rotating Loads: A Numerical and Experimental Analysis
Rotating Machinery, 10(4): 283 291, 2004 Copyright c Taylor & Francis Inc. ISSN: 1023-621X print / 1542-3034 online DOI: 10.1080/10236210490447728 Deflections and Strains in Cracked Shafts due to Rotating
More informationThermal buckling and post-buckling of laminated composite plates with. temperature dependent properties by an asymptotic numerical method
hermal buckling and post-buckling of laminated composite plates with temperature dependent properties by an asymptotic numerical method F. Abdoun a,*, L. Azrar a,b, E.M. Daya c a LAMA, Higher School of
More informationDefinitions of Terminology in Magnetics
Definitions of Terminology in Magnetics Ag Area of the air gap, or the cross sectional area of the air gap perpendicular to the flux path, is the average cross sectional area of that portion of the air
More information