基于滑移线理论的一种模型单元

A kind of model element based on the slip-line theory

特征单元是模型元法求解塑性加工问题的基础。本文应用滑移线理论的图解法提出并求解出一种特征单元 ,推导出该特征单元形状的确定方法及单元的应力表达式 ,并对单元滑移线场变化规律作出全面定量描述。本文丰富了特征单元库 ,求解同类问题可以直接套用这种单元 。

Feature unit is the base of the solution of plastic process in the MEM(model ele ment method) ,This paper find solution of a kind of feature unit based on graphi c solution of slip-line theory ?deduce the method of confirming feature unit f igure and stress expression of feature unit, give out overall and quantilative d escription about change rule of slip-line field and enrich the feature unit bas e The feature unit can be used directly when come to the same problem This u nit simplify the calculation