就分 nalysis of stress-state and strain-state四 、应力状态的分类 The classification of stresses-state) 1空间应力状态( Triaxial stress-state or three-dimensional stress-state 个主应力G1,a2,O3均不等于零 2平面应力状态( Biaxial stress-state or plane stress-state 个主应力G1,O2,O中有两个不等于零 3单向应力状态( Uniaxial stress-state or simple stress-state 三个主应力a1,02,G中只有一个不等于零 3 用理