Chapter7 Stress State and Failure Criteria(Analysis of stress-state and strain-state) 7-1 应力状态概述应力状态概述 (Concepts of stress-state) 7-2 平面应力状态分析平面应力状态分析 -解析法解析法 (Analysis of plane stress-state)7-3 平面应力状态分析平面应力状态分析 -图解法图解法(Analysis of plane stress-state)(Analysis of stress-state and strain-state)7-4 广义广义 胡胡 克定律克定律(Generalized Hooks law)7-5 复杂应力状态的变形比能复杂应力状态的变形比能 (Strain-energy density in general stress-state )7-6 强度理论强度理论 ( Failure criteria)(Analysis of stress-state and strain-state)7-1 应力状态概述应力状态概