| Preface | p. v |
| Acknowledgement | p. vi |
| List of symbols | p. xii |
| Introduction | p. 1 |
| Materials | p. 5 |
| Principles of the strength of materials: Phenomenological description | p. 6 |
| Introduction | p. 6 |
| Stress and Strain | p. 7 |
| Linear Elasticity | p. 8 |
| The Elastic Moduli | p. 9 |
| Poisson's Ratio | p. 11 |
| Elastic Resilience--Stored Energy | p. 12 |
| Elastic Stress Concentrations | p. 15 |
| Fracture of Linearly Elastic Solids | p. 18 |
| Summary of Properties of Linearly Elastic Solids | p. 22 |
| Viscosity and Relaxation | p. 23 |
| Linear Viscoelasticity | p. 25 |
| Creep and Stress Relaxation | p. 27 |
| Effect of Temperature | p. 29 |
| The Glass Transition | p. 30 |
| Dynamic Behaviour | p. 31 |
| Viscoelastic Models | p. 33 |
| Retardation and Relaxation Spectra | p. 36 |
| Fracture of Viscoelastic Materials | p. 39 |
| Generalization of the Griffith Theory of Fracture | p. 41 |
| Summary of Properties of Viscoelastic Materials | p. 43 |
| Principles of the strength of materials: Molecular interpretation | p. 45 |
| Introduction | p. 45 |
| Thermodynamics of Mechanical Deformation | p. 45 |
| Linear Elasticity | p. 47 |
| The Structure of Polymers | p. 50 |
| Statistics of a Polymer Chain | p. 51 |
| Rubber Elasticity | p. 54 |
| Molecular Interpretations of Rubbery Polymers | p. 57 |
| Molecular Structure and the Master Curve | p. 60 |
| Tensile materials | p. 64 |
| Introduction to Crystalline Polymers | p. 64 |
| Factors Affecting Crystallinity in Polymers | p. 64 |
| The Structure of Polymer Crystals | p. 67 |
| Mechanical Properties of Crystalline Polymers | p. 71 |
| Silk | p. 73 |
| The Structure of Parallel-[beta] Silks | p. 73 |
| The Mechanical Properties of Silks | p. 77 |
| Other Types of Silk | p. 80 |
| Collagen | p. 81 |
| The Structure of Collagen | p. 82 |
| Mechanical Properties of Collagen Fibres | p. 88 |
| Cellulose | p. 94 |
| The Structure of Cellulose | p. 95 |
| Mechanical Properties of Cellulose Fibres | p. 99 |
| Chitin | p. 104 |
| The Structure of Chitin | p. 105 |
| Mechanical Properties of Chitin Fibres | p. 107 |
| Pliant materials | p. 110 |
| Introduction | p. 110 |
| The Protein Rubbers | p. 110 |
| Resilin | p. 111 |
| Abductin | p. 114 |
| Elastin | p. 116 |
| The Mucopolysaccharides | p. 119 |
| Pliant Composites | p. 123 |
| Fibre Patterns in Pliant Composites | p. 124 |
| The Role of the Amorphous Phase | p. 126 |
| Mesoglea | p. 127 |
| Uterine Cervix | p. 130 |
| Skin | p. 132 |
| Arterial Wall | p. 134 |
| Cartilage | p. 138 |
| Mechanical Properties of Cartilage | p. 141 |
| Rigid materials | p. 144 |
| Introduction | p. 144 |
| Limiting Behaviour of Composite Materials | p. 144 |
| Elastic Fibres in a Matrix | p. 147 |
| Discontinuous Fibres | p. 149 |
| Effect of Fibre Orientation | p. 150 |
| Compression of Composite Materials | p. 153 |
| Fracture of Composite Materials | p. 154 |
| Voids | p. 157 |
| Structure of Arthropod Cuticle | p. 159 |
| Mechanical Properties of Arthropod Cuticle | p. 164 |
| Structure of Bone | p. 169 |
| Mechanical Properties of Bone | p. 174 |
| Main Features of Behaviour in Relation to Structure | p. 175 |
| Anisotropic Behaviour of Bone | p. 180 |
| Stress Concentrations in Bone | p. 181 |
| The Effect of Mineralization on Bone | p. 183 |
| Fatigue in Bone | p. 184 |
| Adaptive Growth and Reconstruction in Bone | p. 185 |
| Keratin | p. 187 |
| Gorgonin and Antipathin | p. 191 |
| Structure of the Plant Cell Wall | p. 194 |
| Cell Wall Structure in Nitella | p. 196 |
| The Tracheid | p. 196 |
| Mechanical Properties of Cell Walls | p. 198 |
| Structure of Wood | p. 202 |
| Mechanical Properties of Wood | p. 203 |
| Stony Materials | p. 207 |
| Porifera | p. 207 |
| Cnidaria | p. 210 |
| Mollusca | p. 211 |
| Brachiopoda | p. 214 |
| Arthropoda | p. 216 |
| Echinodermata | p. 216 |
| Birds' Eggshells | p. 218 |
| Spicules: Mechanical Considerations | p. 219 |
| Teeth | p. 221 |
| Mechanical Properties of Stony Materials | p. 224 |
| Grain Size | p. 225 |
| Porosity | p. 227 |
| The Function of the Organic Matrix | p. 229 |
| Stony Skeletons with Many Holes | p. 233 |
| Rigid Skeletal Materials: some Final Remarks | p. 234 |
| Structural Elements and Systems | p. 241 |
| Elements of structural systems | p. 243 |
| Introduction | p. 243 |
| Bending | p. 244 |
| Compression and Buckling | p. 249 |
| Torsion | p. 253 |
| Cross-Sectional Shape | p. 254 |
| Shells | p. 261 |
| Materials for Minimum Weight | p. 264 |
| Principles of Structural Optimization | p. 268 |
| The Failure of Elements (and Shells) | p. 269 |
| Joints | p. 275 |
| Degrees of Freedom | p. 275 |
| Forces and Directions | p. 277 |
| Flexible Joints | p. 278 |
| Sliding Joints | p. 279 |
| Adaptation of Shape | p. 280 |
| Adaptation of Material | p. 283 |
| Support in organisms | p. 287 |
| Introduction to Rigid and Flexible Systems | p. 287 |
| The Optimization of Space Frames | p. 289 |
| Fibre-wound Cylinders as Reinforced Membrane Sytems | p. 293 |
| Design Principles for Biological Structural Systems | p. 297 |
| Real Organisms: An Overview | p. 299 |
| Symmetry | p. 299 |
| Reaction to Force | p. 299 |
| Fluid Support Systems in Plants and Animals | p. 302 |
| High-Pressure Worms | p. 302 |
| Low-Pressure Worms | p. 304 |
| Open, Extensible Cylinders: Sea Anemones | p. 306 |
| Hydra and Other Polyps | p. 308 |
| Medusae | p. 310 |
| Tube Feet | p. 313 |
| Metamerism | p. 316 |
| On Being Surrounded by Air | p. 318 |
| Wilting Plants | p. 318 |
| Woody Plants | p. 320 |
| Reaction Wood | p. 321 |
| Fibre-reinforced Palm Trees | p. 324 |
| The Hydrostatic Onychophora | p. 325 |
| Jointed Frameworks of Solid Materials | p. 327 |
| Running and Burrowing Myriapods | p. 327 |
| Insects | p. 332 |
| Complex Support Systems: Molluscs and Echinoderms | p. 333 |
| Squid Locomotion | p. 334 |
| Backbones | p. 337 |
| Stressed Tissues | p. 339 |
| Safety Factors | p. 340 |
| Ecomechanics | p. 345 |
| Ecological mechanics | p. 347 |
| Introduction | p. 347 |
| The Stressful Environment | p. 348 |
| Adaptations to Gravity (Mass) | p. 348 |
| Adaptations to Velocity of Flow (Strength and Rigidity) | p. 349 |
| Rigid Stony Corals | p. 349 |
| Compliant and Tensile Grasses, Seaweeds and Spider Webs | p. 349 |
| Drag Control in Air: Trees | p. 355 |
| Drag Control in Water: Passive Suspension Feeders | p. 355 |
| Adaptations to Direction of Flow (Anisotropy) | p. 358 |
| Adaptations to Duration and Frequency of Flow (Stress Rate and Fatigue) | p. 364 |
| Meiofauna and the Stormy Interstices | p. 364 |
| Active Suspension Feeders | p. 365 |
| The Informative Environment | p. 365 |
| Chemical Information | p. 365 |
| Thermal Information | p. 365 |
| Rheological Information | p. 367 |
| The Next Few Years | p. 367 |
| References--Author Index | p. 369 |
| Subject Index | p. 395 |
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