塑性力学中的新理论新方法

New Theory and New Method in Plasticity

利用塑性应变理论及变分原理提出了一个分析弹塑性问题的新理论新方法．这种新理论新方法避开了非线性应力应变关系，抛弃了分析弹塑性问题的传统做法，避免了上述传统做法带来的困难，不仅计算简便，而且精度高，为弹塑性分析开拓了一个新途径．

A new theory and new method in plasticity is presented in terms of the theory of plastic straia and variational principle.This method avoids nonlinear stress-strain relation,abandons traditional method.for analysis of the elastic-plastic problems and avoids the difficulty of traditional method.This method is not only a simple and convenient method, but also a method of high precison.It ushers in a new way for elastic-plastic analysis.