无缺陷弯管的塑性极限载荷的双剪统一屈服解

A Unified Solution for Plastic Collapse Load Analysis of Undefected Pipe Elbows

采用双剪统一屈服准则,分析等厚度薄壁弯管在内压作用下的塑性极限载荷问题,推导出塑性极限载荷统一表达式。在该表达式中,当其系数取不同的值时,就可得到按Tresca屈服准则、双剪统一屈服准则所得的结果,并能较好逼近Mises屈服准则所得的结果。

This paper present a new method to analysis the plastic collapse load of undefected pipe elbows under inner pressure based on Twin shear unified yield criterion,and the Unified Solutions for Plastic Collapse Load are obtained. The solutions based on Tresca criterion,Mises criterion are special cases or linear approximations of the present result.