摘要
介绍了求解主应力的另一种方法，利用应力强度σi、应力类型指数ωσ和偏应力状态第三不变量J3求解主应力，拓宽了解题思路，又使计算过程简化．
An alternative method to solve the principal stress is introduced,which uses the stress strength,the index of stress types,the third constant of deviation stress state to solve the principal stress. It simplifies the calculation
关键词
主应力
求解方法
应力状态
弹塑性力学
principal stress, solution deriving method, stress state
