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Nonlinear Finite Element Analysis of Solids and Structures, 2nd Edition

ISBN: 978-0-470-66644-9
540 pages
September 2012, ©2012
Nonlinear Finite Element Analysis of Solids and Structures, 2nd Edition (0470666447) cover image

Built upon the two original books by Mike Crisfield and their own lecture notes, renowned scientist René de Borst and his team offer a thoroughly updated yet condensed edition that retains and builds upon the excellent reputation and appeal amongst students and engineers alike for which Crisfield's first edition is acclaimed.

Together with numerous additions and updates, the new authors have retained the core content of the original publication, while bringing an improved focus on new developments and ideas. This edition offers the latest insights in non-linear finite element technology, including non-linear solution strategies, computational plasticity, damage mechanics, time-dependent effects, hyperelasticity and large-strain elasto-plasticity.

The authors' integrated and consistent style and unrivalled engineering approach assures this book's unique position within the computational mechanics literature.

Key features:

  • Combines the two previous volumes into one heavily revised text with obsolete material removed, an improved layout and updated references and notations
  • Extensive new material on more recent developments in computational mechanics
  • Easily readable, engineering oriented, with no more details in the main text than necessary to understand the concepts.
  • Pseudo-code throughout makes the link between theory and algorithms, and the actual implementation.
  • Accompanied by a website (www.wiley.com/go/deborst) with a Python code, based on the pseudo-code within the book and suitable for solving small-size problems.

Non-linear Finite Element Analysis of Solids and Structures, 2nd Edition is an essential reference for practising engineers and researchers that can also be used as a text for undergraduate and graduate students within computational mechanics.

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Preface xi

Series Preface xiii

Notation xv

About the Code xxi

PART I BASIC CONCEPTS AND SOLUTION TECHNIQUES

1 Preliminaries 3

1.1 A Simple Example of Non-linear Behaviour 3

1.2 A Review of Concepts from Linear Algebra 5

1.3 Vectors and Tensors 12

1.4 Stress and Strain Tensors 17

1.5 Elasticity 23

1.6 The PyFEM Finite Element Library 25

References 29

2 Non-linear Finite Element Analysis 31

2.1 Equilibrium and Virtual Work 31

2.2 Spatial Discretisation by Finite Elements 33

2.3 PyFEM: Shape Function Utilities 38

2.4 Incremental-iterative Analysis 41

2.5 Load versus Displacement Control 50

2.6 PyFEM: A Linear Finite Element Code with Displacement Control 53

References 62

3 Geometrically Non-linear Analysis 63

3.1 Truss Elements 64

3.2 PyFEM: The Shallow Truss Problem 76

3.3 Stress and Deformation Measures in Continua 85

3.4 Geometrically Non-linear Formulation of Continuum Elements 91

3.5 Linear Buckling Analysis 100

3.6 PyFEM: A Geometrically Non-linear Continuum Element 103

References 110

4 Solution Techniques in Quasi-static Analysis 113

4.1 Line Searches 113

4.2 Path-following or Arc-length Methods 116

4.3 PyFEM: Implementation of Riks’ Arc-length Solver 124

4.4 Stability and Uniqueness in Discretised Systems 129

4.5 Load Stepping and Convergence Criteria 134

4.6 Quasi-Newton Methods 138

References 141

5 Solution Techniques for Non-linear Dynamics 143

5.1 The Semi-discrete Equations 143

5.2 Explicit Time Integration 144

5.3 PyFEM: Implementation of an Explicit Solver 149

5.4 Implicit Time Integration 152

5.5 Stability and Accuracy in the Presence of Non-linearities 156

5.6 Energy-conserving Algorithms 161

5.7 Time Step Size Control and Element Technology 164

References 165

PART II MATERIAL NON-LINEARITIES

6 Damage Mechanics 169

6.1 The Concept of Damage 169

6.2 Isotropic Elasticity-based Damage 171

6.3 PyFEM: A Plane-strain Damage Model 175

6.4 Stability, Ellipticity and Mesh Sensitivity 179

6.5 Cohesive-zone Models 185

6.6 Element Technology: Embedded Discontinuities 190

6.7 Complex Damage Models 198

6.8 Crack Models for Concrete and Other Quasi-brittle Materials 201

6.8.1 Elasticity-based Smeared Crack Models 201

6.8.2 Reinforcement and Tension Stiffening 206

6.9 Regularised Damage Models 210

References 215

7 Plasticity 219

7.1 A Simple Slip Model 219

7.2 Flow Theory of Plasticity 223

7.3 Integration of the Stress–strain Relation 239

7.4 Tangent Stiffness Operators 249

7.5 Multi-surface Plasticity 252

7.6 Soil Plasticity: Cam-clay Model 267

7.7 Coupled Damage–Plasticity Models 270

7.8 Element Technology: Volumetric Locking 271

References 277

8 Time-dependent Material Models 281

8.1 Linear Visco-elasticity 281

8.2 Creep Models 287

8.3 Visco-plasticity 289

References 303

PART III STRUCTURAL ELEMENTS

9 Beams and Arches 307

9.1 A Shallow Arch 307

9.2 PyFEM: A Kirchhoff Beam Element 317

9.3 Corotational Elements 321

9.4 A Two-dimensional Isoparametric Degenerate Continuum Beam Element 328

9.5 A Three-dimensional Isoparametric Degenerate Continuum Beam Element 333

References 341

10 Plates and Shells 343

10.1 Shallow-shell Formulations 344

10.2 An Isoparametric Degenerate Continuum Shell Element 351

10.3 Solid-like Shell Elements 356

10.4 Shell Plasticity: Ilyushin’s Criterion 357

References 361

PART IV LARGE STRAINS

11 Hyperelasticity 365

11.1 More Continuum Mechanics 365

11.2 Strain Energy Functions 374

11.3 Element Technology 389

References 398

12 Large-strain Elasto-plasticity 401

12.1 Eulerian Formulations 402

12.2 Multiplicative Elasto-plasticity 407

12.3 Multiplicative Elasto-plasticity versus Rate Formulations 411

12.4 Integration of the Rate Equations 414

12.5 Exponential Return-mapping Algorithms 418

References 422

PART V ADVANCED DISCRETISATION CONCEPTS

13 Interfaces and Discontinuities 427

13.1 Interface Elements 428

13.2 Discontinuous Galerkin Methods 436

References 439

14 Meshless and Partition-of-unity Methods 441

14.1 Meshless Methods 442

14.2 Partition-of-unity Approaches 451

References 470

15 Isogeometric Finite Element Analysis 473

15.1 Basis Functions in Computer Aided Geometric Design 473

15.2 Isogeometric Finite Elements 483

15.3 PyFEM: Shape Functions for Isogeometric Analysis 487

15.4 Isogeometric Analysis in Non-linear Solid Mechanics 490

References 506

Index 509

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Nonlinear Finite Element Analysis of Solids and StructuresPython code, based on the pseudo-code within the book and suitable for solving small-size problems.
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Instructors Resources
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Students Resources
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