Page 7 - 裂尖闭合现象的全场域模型

Contents

Chapter 1
Introduction / 1

1.1 Motivation and Aims of the Research / 1
1.2 Description of the Contents / 2

Chapter 2
Theory / 5

2.1 Introduction / 5
2.2 Mathematical Description of a Crack Tip / 5
2.2.1 Plane Elasticity / 5
2.2.2 Crack Tip Stress Fields / 7
2.2.2.1 The Westergaard stress field / 7
2.2.2.2 Williams stress solution / 9
2.2.2.3 Muskhelishvili’s complex representation of the stresses / 13
2.2.3 Crack Tip Displacement Fields / 14
2.2.4 Conclusions / 15
2.3 Fundamentals of Crack Closure / 16
2.3.1 Introduction / 16
2.3.2 Plasticity-induced Crack Closure / 18
2.4 Experimental Techniques for Crack Stress Analysis / 21
2.4.1 Photoelastic Stress Analysis / 21
2.4.1.1 Introduction / 20
2.4.1.2 Stress-Optic Law / 22
2.4.1.3 Photoelasticity stress analysis / 25