1.Introduction 1.3 Design Principle Stress-Strain Analysis Closed-Form Solutions oSimple Geometry Homogeneous and Isotropic Media Linear Elastic Behaviour 」Numerical Methods Boundary Element oFinite Element ODiscrete Element 百年同海99 Stress-Strain Analysis  Closed-Form Solutions Simple Geometry Homogeneous and Isotropic Media Linear Elastic Behaviour  Numerical Methods Boundary Element Finite Element Discrete Element 1. Introduction 1.3 Design Principle