TABLE OF CONTENTS: Preface vii
CHAPTER ONE: Basic Elasticity and Viscoelasticity 1
1.1 Hookean Materials and Short-Range Forces 1
1.2 Non-Hookean Materials and High Strains 4
1.3 The Energy Approach 6
1.4 Yield and Fracture 21
1.5 Adhesion 28
CHAPTER TWO: Proteins 29
2.1 Amino Acids and Their Polymerization--Primary Structure 29
2.2 Conformation--Secondary Structure 33
2.3 Structural Proteins 35
2.4 Coping with Strain Energy 57
CHAPTER THREE: Sugars and Fillers 61
3.1 Fibers 65
3.2 Structural Polysaccharides in Plants 68
3.3 Water, the Invisible Support 72
3.4 Mucus 82
CHAPTER FOUR: Soggy Skeletons and Shock Absorbers 84
4.1 Composite Materials 84
4.2 Stress--Strain Behavior 88
4.3 Poisson's Ratio and Auxeticism 89
4.4 The Skeleton of the S ea Anemone 95
4.5 Stretching the Pregnant L ocust 99
4.6 Fracture--Chance and Choice 101
4.7 Stiffness--A Biological Variable 108
CHAPTER FIVE: Stiff Materials from Polymers 116
5.1 Crystals and O rder 116
5.2 Composite Materials 118
5.3 To Stiffen the Matrix 129
5.4 Hardness and Indentation 133
5.5 Cellular Materials 135
CHAPTER SIX: Biological Ceramics 143
6.1 Calcium Salts or Silica? 144
6.2 Problems with Mechanical Tests 147
6.3 Mollusc Shells 151
6.4 The Functional Design of Bone 159
6.5 Teeth 169
6.6 Eggshell 171
6.7 Echinoderms 175
CHAPTER SEVEN: Implementing Ideas Gleaned from Biology 178
7.1 Biomimetic Products 179
7.2 Quasi-Biomimetic
Products 185
7.3 Techniques for Biomimetics 187
7.4 Instead of nergy . . . 193
7.5 Use Space 195
7.6 . . or Use Information . . .197
7.7 . . . and Structure . . . 199
7.8 Well, That's It 204
References 205
Index 223
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