基于有限元的安定下限问题分析  

The Analysis on Lower Pound Shakedown Problems Based on FEM

作　　者：董兴平[1] 崔延卫[1] 

机构地区：[1]河海大学土木工程学院,江苏南京210098

出　　处：《盐城工学院学报（自然科学版）》2005年第1期69-71,77,共4页Journal of Yancheng Institute of Technology:Natural Science Edition

摘　　要：在安定下限Melan定理的基础上 ,基于弹塑性有限元法 ,得到稳定的残余应力场 ,从而提出了安定分析的新方法。该方法理论清楚、实用简便 ,采用特殊的实施步骤可以方便的求解复杂载荷问题。最后证明该方法用于结构安定分析是可行的。Based on the lower bound shakedown theorems and the FEM method, the stable residual stress field was obtained and the new method on shakedown problems was proposed. The theorem was distinct and simple and convenient. It was easy to solve the complicated load problems by special means. Finally it was proved that the method present in this paper was effective.

关 键 词：下限定理 安定分析 残余应力场 复杂载荷 

分 类 号：TU311.2[建筑科学—结构工程]