三维网格自适应有限元计算及在拱坝分析中应用前景

Adaptive Mesh Refinement for 3-D Finite Element Analysis and its Application in Arch Dams

设计了一种三维有限元网格自适应局部细分的算法及数据管理系统,利用较简单的有限元误差估计方法对计算结果进行分析,建立了空间8节点等参单元网格自适应局部细分程序,通过对典型算例的计算表明,本方法可有效提高计算精度和计算效率。

A method of adaptive mesh refinement for 3-D finite element analysis is proposed using a corresponding data structure and management system. Based on this method and a posteiori error estimator due to Zienkiewicz and Zhu, a compute program for 3-D structures is developed. A number of examples are given to illustrated the efficiency of the adaptive refinement method.