弹性力学基础及有限元法-4.pdf

弹性力学基础及有限元法-4 Elasticity Finite Element Method (FEM) 有限元法：基本思路和步骤 The concepts of FEM FEM ANSYS-4 内蒙古科技大学 机械工程学院 刘学杰 2012-11 Outline 概要  1. Review 回顾  2. Finite Element Method FEM （有限元法）  2.1. Model and concept 模型和概念  2.2. FEM basic idea 有限元法的基本思想  2.3. 基本步骤  3. 离散化  4.位移函数  5.单元分析 Review  The elasticity  infinite method  1. The basic Hypothesis (基本假设）  2. The model of elasticity (弹力模型） ▽  3. The basic equations （基本方程）  The equilibrium equations （平衡方程）  The strain-displacement relationship （几何方程）  The stress-strain relationship （物理方程）  4. The solution of the equations and problems The Model of elasticity  Under what conditions?  The steady loads  The fixed displacements  The object to be studied:  elastic body Elemental volume  The concerted items  The displacements: u, v, w  The highest stress and stress distribution  The largest strain and strain distribution The set of equations   