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结构力学相关公式

关于工程应力应变、真应力应变

Engineering stress and strain: True stress and strain: 相关推导:参考知乎 http://工程应变和真应变之间有什么关系? - 知乎  

理想化单轴应力应变(Idealized Uni-axial Stress-Strain Curve)

几种分类: Rigid perfectly plastic Elastic perfectly plastic Piecewise linear strain-hardening Power-law strain-hardening A true stress-strain curve is frequently called a flow curve       where K is the stress at  = 1.

理想化的单轴应力-应变曲线(Multi-axial stress status: yield criteria)

两个准则:

Tresca criteria: maximum shear stress 

http://塑性材料失效准则Ductile Failure Analysis - 武灵王的文章 - 知乎

von Mises criteria: distortion-energy

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