Dattaguru / Gopalakrishnan IUTAM Symposium on Multi-Functional Material Structures and Systems

Proceedings of the the IUTAM Symposium on Multi-Functional Material Structures and Systems, Bangalore, India, December 10-12, 2008
1. Auflage 2010
ISBN: 978-90-481-3771-8
Verlag: Springer-Verlag
Format: PDF
Kopierschutz: Adobe DRM (»Systemvoraussetzungen)

E-Book, Englisch, 396 Seiten

Autoren/Hrsg.

Dattaguru, B.

Gopalakrishnan, Srinivasan

Inhaltsverzeichnis

1;Preface;6
2;Contents;8
3;Contributors;12
4;Section I New Materials A: Functionally Graded Materials & Shape Memory Alloys;17
4.1;Functionally Graded Shells with Distributed Piezoelectric Sensors and Actuators for Active Vibration Control;18
4.1.1;1 Introduction;18
4.1.2;2 Formulation;19
4.1.2.1;2.1 Strain Energy and Electrical Energy;20
4.1.2.2;2.2 Kinetic Energy;21
4.1.2.3;2.3 Piezoelastic Governing Equations of Motion;22
4.1.3;3 Results and Discussion;23
4.1.3.1;3.1 Aluminum–Zirconia FGM Plate;23
4.1.3.2;3.2 Active Vibration Control of Aluminum–Zirconia FGM Shell Panel with PZT Sensor and Actuator Patches;24
4.1.4;4 Summary and Conclusions;27
4.1.5;References;28
4.2;A Numerical Investigation of the Dynamic Behaviour of Functionally Graded Foams;29
4.2.1;1 Introduction;29
4.2.2;2 Methodology;31
4.2.2.1;2.1 Striker Impacts;32
4.2.2.2;2.2 Split Hopkinson Pressure Bar;32
4.2.3;3 Discussion;33
4.2.3.1;3.1 Striker Impacts;33
4.2.3.2;3.2 Split Hopkinson Pressure Bar;34
4.2.4;4 Conclusions;36
4.2.5;References;37
4.3;Nonlinear Stability of Functionally Graded Plates Subjected to Aero-thermo-mechanical Loads;39
4.3.1;1 Introduction;39
4.3.2;2 Formulation;40
4.3.3;3 Results and Discussion;42
4.3.3.1;3.1 Mechanical Post-Buckling of Si3N4/SUS304 FGM Plates;42
4.3.3.2;3.2 Thermal Post-Buckling of Aluminum–Alumina FGM Plates;44
4.3.3.3;3.3 Flutter Characteristics of FGM Plates;45
4.3.4;References;46
4.4;A Generalized Three Species Model for Shape Memory Alloys;48
4.4.1;1 Introduction;48
4.4.2;2 Thermodynamic Framework of the Model;49
4.4.3;3 Integration Algorithm for Time Discrete Model;51
4.4.4;4 Constraint on the Hardening Functions ;51
4.4.5;5 Case Study: Symmetric Dissipation Potential for Forward and Reverse Transformation;53
4.4.6;6 Role of Hardening Functions;54
4.4.6.1;6.1 Effect of Interaction Hardening;54
4.4.6.2;6.2 Effect of Constraint Condition on Hardening Parameters;54
4.4.7;7 Summary Remarks;55
4.4.8;References;56
4.5;Use of SMA Constitutive Model in Finite Element Analysis of Wire-Based Actuators;57
4.5.1;1 Introduction;57
4.5.2;2 Constitutive Model for SMA;58
4.5.3;3 FE Implementation;60
4.5.4;4 Results and Discussion;61
4.5.4.1;4.1 Validation;61
4.5.5;5 Concluding Remarks;64
4.5.6;References;64
4.6;Time Dependent Deformations in Concrete: A Multi-scale Approach;66
4.6.1;1 Introduction;67
4.6.2;2 Experimental Program;68
4.6.3;3 Analysis and Discussion;70
4.6.4;4 Closing Remarks;74
4.6.5;References;75
4.7;Higher Order Theories of Functionally Graded Beams and Plates;76
4.7.1;1 Introduction;76
4.7.2;2 Theoretical Formulation;77
4.7.2.1;2.1 Effective Moduli of Two-phase Composites;79
4.7.2.2;2.2 Equations of Equilibrium;79
4.7.3;3 Numerical Results and Discussions;80
4.7.4;4 Conclusions;83
4.7.5;References;84
5;Section II New Materials B: Nano Materials and Composites;86
5.1;A Strain Sensor from a Polymer/Carbon Nanotube Nanocomposite;87
5.1.1;1 Introduction;88
5.1.2;2 Theory;88
5.1.3;3 Verifications;91
5.1.4;4 Influence of Various Parameters on Piezoresistivity Using Numerical Model;92
5.1.5;5 Influence of Various Parameters on Piezoresistivity Using Experiments;94
5.1.6;6 Conclusions;95
5.1.7;References;96
5.2;A Hysteresis Compensator Based on a Modified Dynamic Preisach Model for Conductive Polymer Nanocomposites;97
5.2.1;1 Introduction;97
5.2.2;2 Modified Preisach Model;98
5.2.3;3 Everett Integral and Everett Surface;100
5.2.4;4 Everett surface Using Both Hysteresis and Dynamic Relaxation Operators;101
5.2.5;5 Forward Calculation Using Everett Surface;102
5.2.6;6 Compensation;102
5.2.7;7 Results and Discussion;103
5.2.8;8 Conclusion;104
5.2.9;References;104
5.3;Multi-Axial Behavior of Ferroelectrics with Two Types of Micro–Macro Mechanical Models;105
5.3.1;1 Introduction;106
5.3.2;2 Model I: Simultaneous Evolution Model;106
5.3.2.1;2.1 Driving Force and Evolution Equations;107
5.3.3;3 Model II: Pressure Dependent Model;110
5.3.3.1;3.1 Modified Switching Criterion with Boundary Constraints;110
5.3.4;4 Conclusions;112
5.3.5;References;112
5.4;Active Single Walled Carbon Nanotube–Polymer Composites;113
5.4.1;1 Introduction;113
5.4.2;2 Experimental Studies;114
5.4.3;3 Results;115
5.4.4;4 Discussion;118
5.4.5;5 Conclusion;119
5.4.6;References;119
5.5;Modeling of Fibre Formation and Oxygen Permeability in Micro-fibrillar Polymer-Polymer Composites;121
5.5.1;1 Introduction;121
5.5.2;2 Experimental Details;122
5.5.3;3 Results and Discussion;123
5.5.4;4 Modeling;125
5.5.5;5 Conclusions;128
5.5.6;References;129
6;Section III Multifunctional Material Systems;130
6.1;Multiscale Computational Analysis of Biomechanical Systems;131
6.1.1;1 Introduction;131
6.1.2;2 Modeling of Soft Tissue;132
6.1.2.1;2.1 Biphasic Soft Tissues;132
6.1.2.2;2.2 Fluid Tissue Interface Modeling;133
6.1.2.3;2.3 Blood Flow Through Atherosclerotic Artery;134
6.1.3;3 Constitutive Modeling of Solid Tumor;136
6.1.4;4 Biomechanical Analysis of Uterus During Parturition;137
6.1.4.1;4.1 Mathematical Homogenization of Myometrial Tissue;137
6.1.5;5 Conclusions;138
6.1.6;References;139
6.2;Effect of Magnetic-Field on Stress–Strain Behavior of Magneto-Sensitive Elastomers;140
6.2.1;1 Introduction;140
6.2.2;2 Mathematical Modeling;141
6.2.3;3 Simulation;143
6.2.4;4 Results and Discussion;145
6.2.5;5 Conclusion;148
6.2.6;References;149
6.3;Effects of Functionalization on the Morphology, Cure Kinetics and Mechanical Behavior of Thermosetting Polymers;150
6.3.1;1 Introduction;150
6.3.2;2 Experimental Studies;151
6.3.2.1;2.1 Materials;151
6.3.2.2;2.2 Functionalization by Oxidation;151
6.3.2.3;2.3 Functionalization by Fluorination;152
6.3.2.4;2.4 Processing of Epoxy Nanocomposites;152
6.3.2.5;2.5 Characterization;152
6.3.2.5.1;2.5.1 Interfacial Interaction;152
6.3.2.5.2;2.5.2 Flexural Characterization;153
6.3.2.5.3;2.5.3 Morphological Characterization;153
6.3.2.5.4;2.5.4 Curing Kinetics;153
6.3.3;3 Results and Discussion;153
6.3.3.1;3.1 Functionalization of MWCNTs;153
6.3.3.1.1;3.1.1 Effects of Functionalization on Morphology;153
6.3.3.1.2;3.1.2 Surface Interaction and Properties (FTIR and RamanSpectroscopy Analysis);154
6.3.3.2;3.2 Curing Kinetics by DSC and FTIR;156
6.3.3.3;3.3 Flexural Characterization;157
6.3.3.4;3.4 Morphology of Fracture Surface;157
6.3.3.5;3.5 Conclusion;158
6.3.4;References;159
6.4;A Study on Polarization-Electric Field Nonlinearity in Smart Composite Structures;160
6.4.1;1 Introduction;160
6.4.2;2 Hysteresis Modeling;161
6.4.2.1;2.1 Formulation;161
6.4.2.2;2.2 Validation of Constitutive Relations;162
6.4.3;3 Analysis of Laminated Composite Plates;164
6.4.3.1;3.1 Finite Element Formulation;164
6.4.3.2;3.2 Deformation Models;164
6.4.3.3;3.3 Linear and Nonlinear Analysis of Composite Plates with Segmented Piezo Patches;165
6.4.4;4 Concluding Remarks;167
6.4.5;References;167
6.5;Multifunctional Components in Sodium Cooled Fast Reactor: Design and Development;169
6.5.1;1 Introduction;169
6.5.2;2 Challenges and Achievements in Design and Manufacture of PFBR Components;170
6.5.3;3 Important Multifunctional Components in FBR;171
6.5.3.1;3.1 Fuel Clad and Fuel Subassembly;172
6.5.3.2;3.2 Grid Plate;172
6.5.3.3;3.3 Main Vessel;174
6.5.3.4;3.4 Top Shield ;175
6.5.4;4 R&D Towards Design Validation: A Case Study on Main Velsse;176
6.5.4.1;4.1 Investigation of Buckling Under Seismic Induced Forces;176
6.5.4.2;4.2 Structural Integrity Assessment Under CDA;177
6.5.5;5 Conclusion;178
6.5.6;References;179
7;Section IV Smart Sensors, Structural Health Monitoring;180
7.1;From Structural Mechanics to Inspection Processes: Getting Structural Health Monitoring into Application for Riveted Metallic Structures;181
7.1.1;1 Introduction;181
7.1.2;2 State-of-the-Art in Riveted Joint Monitoring;182
7.1.3;3 Acoustic Signals Reflected from Differently Shaped Boundaries;186
7.1.4;4 Finding Components with Adequate SHM Potential;188
7.1.5;5 Conclusions;189
7.1.6;References;189
7.2;Shaped Modal Sensors for Uncertain Dynamical Systems;190
7.2.1;1 Introduction;191
7.2.2;2 Defining Shaped Sensors for Beam Structures;191
7.2.3;3 Modal Sensors for the Baseline System;193
7.2.4;4 Modal Sensors for Uncertain Systems;194
7.2.5;5 Modal Statistics for Uncertain Dynamical Systems;195
7.2.6;6 Numerical Example;197
7.2.7;7 Conclusion;199
7.2.8;References;200
7.3;Sensor Failure Detection Using Interaction Matrix Formulation;201
7.3.1;1 Introduction;202
7.3.2;2 Indirect Method;203
7.3.3;3 Direct Method;206
7.3.4;4 Simulation;207
7.3.5;5 Experimental Verification;210
7.3.6;6 Conclusion;212
7.3.7;References;212
7.4;Resonant MEMS Sensors;213
7.4.1;1 MEMS Resonator Structures;213
7.4.1.1;1.1 Resonator Building Blocks: Beams, Plates and Membranes;214
7.4.1.2;1.2 Scaling Resonant Frequency;215
7.4.2;2 Resonator Response and the Effect of Q ;216
7.4.3;3 The Quest for High Q and the Control of Damping;218
7.4.4;4 Frequency Tuning and Stability;220
7.4.5;5 Applications;221
7.4.6;6 Conclusions;221
7.4.7;References;222
8;Section V Applications;223
8.1;Compressive Behavior of Fibre Reinforced Honeycomb Cores;224
8.1.1;1 Introduction;224
8.1.2;2 Honeycomb Core Manufacturing;225
8.1.3;3 Out-of-Plane Compressive Behavior of Reinforced Honeycombs;226
8.1.4;4 Results and Discussion;229
8.1.4.1;4.1 Quantitative Comparisons of Strength Between the Reinforced and Un-reinforced Honeycombs;230
8.1.4.2;4.2 Comparison of Theory with Experimental Result;231
8.1.5;5 Concluding Remarks;231
8.1.6;References;231
8.2;Strain-Space Solution for the Elasto-plastic Analysis of Adhesively Bonded Single Lap Joint;233
8.2.1;1 Introduction;233
8.2.2;2 Strain Space Formulation of Plasticity;234
8.2.3;3 Finite Element Implementation;237
8.2.4;4 Results and Discussions;238
8.2.5;5 Conclusions;238
8.2.6;References;240
8.3;Design and Development of a Smart Composite T-Tail for Transport Aircraft;241
8.3.1;1 Introduction;241
8.3.2;2 PZT Amplification Mechanism;242
8.3.3;3 Smart T-Tail Analysis;244
8.3.4;4 Open and Closed Loop Experiments;245
8.3.4.1;4.1 Active Vibration Control Studies;246
8.3.5;5 Conclusions;248
8.3.6;References;249
8.4;Manufacturing of Multi-functional Composites;250
8.4.1;1 Introduction;250
8.4.2;2 Composites Manufacturing Techniques;251
8.4.2.1;2.1 Dry Fibre Preform Technology;251
8.4.2.1.1;2.1.1 3D Weaving;253
8.4.3;3 Non-contact Sensing;255
8.4.4;4 Conclusion;256
8.4.5;References;256
9;Section VI Computational Methods- I;257
9.1;Iso-Spectral Rotating and Non-Rotating Beams;258
9.1.1;1 Introduction;258
9.1.2;2 Formulation;259
9.1.3;3 Finite Element Solution;261
9.1.4;4 Application to Multifunctional Structures;263
9.1.5;5 Conclusions;265
9.1.6;References;265
9.2;Innovative Energy Absorbing Composite Tubes Incorporating Extension-Torsion Coupling, Stitch Ripping, and Foam Crushing;266
9.2.1;1 Introduction;266
9.2.1.1;1.1 Background and Motivation;266
9.2.1.2;1.2 Objectives;267
9.2.2;2 Governing Concepts;267
9.2.3;3 Modeling and Results;268
9.2.3.1;3.1 Tension-torsion Stitch Ripping Device (TTSRD);269
9.2.3.1.1;3.1.1 Optimization of TTSRD Phase;271
9.2.3.2;3.2 Crush Tube Part of Device;271
9.2.3.3;3.3 TTSRD with Crush Foam Filling;273
9.2.3.3.1;3.3.1 Optimized Results for TTSRD with Crush Foam;273
9.2.4;4 Conclusions and Future Work;274
9.2.5;References;275
9.3;A Pseudo-dynamical Systems Approach to Inverse Problems;276
9.3.1;1 Introduction;276
9.3.2;2 A Deterministic Pseudo-dynamical Approach;277
9.3.2.1;2.1 Numerical Experiment on a Linear Inverse Problem;279
9.3.3;3 A Pseudo-dynamical Ensemble Kalman Filter (EnKF) for Elastography;280
9.3.3.1;3.1 Numerical Experiments;283
9.3.4;References;285
9.4;Force Reconstruction for Wave Based Damage Detection;286
9.4.1;1 Introduction;287
9.4.2;2 Mathematical Formulation;288
9.4.3;3 Numerical Experiments;289
9.4.3.1;3.1 Isotropic Rod with Degraded Zone;290
9.4.3.2;3.2 De-laminated Composite Beam;291
9.4.4;4 Conclusions;293
9.4.5;References;293
9.5;On Numerical Integration of Discontinuous Approximations in Partition of Unity Finite Elements;294
9.5.1;1 Introduction;295
9.5.2;2 Schwarz-Christoffel Conformal Mapping;296
9.5.3;3 Strain Smoothing in XFEM;297
9.5.4;4 Numerical Examples;297
9.5.4.1;4.1 Infinite Plate;298
9.5.4.2;4.2 Plate with Circular Inclusion;299
9.5.5;5 Conclusion;300
9.5.6;References;301
10;Section VII Computational Methods II;302
10.1;Approximate Evaluations of the Modal Effective Electromechanical Coupling Coefficient;303
10.1.1;1 Introduction;303
10.1.2;2 Review of Modal Effective EMCC Approximations;304
10.1.3;3 Energy-Based Modal Effective EMCC Approximations;306
10.1.4;4 New Approximation of the Modal Effective EMCC;307
10.1.5;5 Modal Effective Viscoelastic Loss Factor-EMCC Analogy;308
10.1.6;6 Numerical Assessments and Validations;309
10.1.7;7 Conclusions;310
10.1.8;References;310
10.2;Distributed Point Source Model for Wave Propagation Through Multi-phase Systems;312
10.2.1;1 Introduction;312
10.2.2;2 Distributed Point Source Method (DPSM);313
10.2.2.1;2.1 Ultrasonic Field in Homogeneous Fluid;314
10.2.2.2;2.2 Ultrasonic Field in Multi-Layered Fluids;314
10.2.2.3;2.3 Transient Wave Propagation Using Spectral Approach;315
10.2.3;3 Numerical Results and Discussions;316
10.2.4;4 Conclusions;318
10.2.5;References;319
10.3;Intrinsic Localized Modes in Micro-scale Oscillator Arrays Subjected to Deterministic Excitation and White Noise;320
10.3.1;1 Introduction;320
10.3.2;2 Effects of Noise on ILMs: Computational Results;322
10.3.2.1;2.1 Discussion;325
10.3.3;3 The Fokker-Planck Formalism;325
10.3.3.1;3.1 Stochastic Klein-Gordon Equations;326
10.3.3.2;3.2 The Fokker-Planck Equation;326
10.3.3.3;3.3 Moment Evolution Equations;326
10.3.3.4;3.4 Numerical Solutions of Moment Evolution Equations;327
10.3.3.5;3.5 Discussion;327
10.3.4;4 Concluding Remarks;328
10.3.5;References;329
10.4;A Theoretical and Computational Framework for Modeling Diffusion-Driven Boundary Motion Without Remeshing;330
10.4.1;1 Introduction;330
10.4.2;2 Theoretical Framework;332
10.4.3;3 Computational Framework;333
10.4.4;4 Results and Discussions;334
10.4.5;5 Summary;335
10.4.6;References;336
10.5;Multiscale Simulation of Metal/Ceramic Interface Fracture;338
10.5.1;1 Introduction;339
10.5.2;2 Material Behaviour at Sub Micron Level;340
10.5.3;3 The Cohesive Model;341
10.5.4;4 Finite Element Analysis;342
10.5.5;5 Results and Discussion;343
10.5.5.1;5.1 Stationary crack;343
10.5.5.2;5.2 Crack Propagation Using Cohesive Modelling Approach;344
10.5.5.3;5.3 Correlation between Local Adhesion Capacity and Macroscopic Fracture Energy;348
10.5.6;6 Conclusion;349
10.5.7;References;350
11;Editor’s Bio-Sketches;351