用耦合法和O.C.Zienkiewicz准则求解地下结构的弹粘塑性问题

SOLVING ELASTO-VISCOPLASTIC PROBLEM OF UNDERGROUND STRUCTURE BY COUPLING METHOD AND O.G.ZIENKIEWICZ CRITERION

本文详细介绍了用有限元与边界元耦合的方法求解地下结构的弹粘塑性问题,并参照O.C.Zienkiewicz屈服准则推导了用于隐式计算格式的H矩阵的显式表达式。文中最后给出了两个应用实例,及与弹塑性分析结果进行了比较。

The paper comprehensively introduces numerical method of solving elastoviscoplastic problem of underground structure by coupling the finite element with the boundary element.Based on O.C.Zienkiewicz yield criterion, the author derives explicit formula of matrix H,which is used in implicit computation scheme.In the last section, two practical examples are examined and compared with elasto-plastic analysis results.