基于Uzawa算法的弹塑性扭转问题的局部微分求积法  

Local differential quadrature method based on the Uzawa algorithm for the elastic-plastic torsion problems

作　　者：丁睿[1] 魏学润[1] 

机构地区：[1]苏州大学数学科学学院,苏州215006

出　　处：《计算力学学报》2011年第4期499-503,共5页Chinese Journal of Computational Mechanics

基　　金：国家自然科学基金(10201026;10672111)资助项目

摘　　要：研究了由椭圆变分不等式描述的弹塑性扭转问题,构造了基于Uzawa算法的局部微分求积法,给出了数值算例,通过与有限元方法的比较,说明了方法的有效性。The elastic-plastic torsion problems described by an elliptic variational inequality are discussed in this paper.It presents the local differential quadrature method based on the Uzawa algorithm.Finally some numerical experiments are given,comparing with results of FEM,it shows that Uzawa-LDQ method performed better than FEM regarding accuracy,efficiency and computing time.

关 键 词：弹塑性扭转问题 局部微分求积法 Uzawa方法 变分不等式 

分 类 号：O241.8[理学—计算数学]