应力应变分析(Analysis of stress--state and strain-statey) 第七章应力和应变分析强度理论 Chapter7 Analysis of Stress and Strain Strength Theories 7-1应力状态概述 (Concepts of stress-state) 87-2平面应力状态分析-解析法 (Analysis of plane stress-state) 87-3平面应力状态分析-图解法 (Analysis of plane stress-state) 87-4三向应力状态分析