SUPERCONVERGENCE ANALYSIS OF THE STABLE CONFORMING RECTANGULAR MIXED FINITE ELEMENTS FOR THE LINEAR ELASTICITY PROBLEM  

作　　者：Dongyang Shi Minghao Li 

机构地区：[1]School of Mathematics and Statistics, Zhengzhou University, Zhengzhou 450001, China [2]School of Aerospace Engineering and Applied Mechanics, Tongji University, Shanghai 200092, China

出　　处：《Journal of Computational Mathematics》2014年第2期205-214,共10页计算数学（英文）

摘　　要：In this paper, we consider the linear elasticity problem based on the Hellinger-Reissner variational principle. An O（h2） order superclose property for the stress and displacement and a global superconvergence result of the displacement are established by employing a Clement interpolation, an integral identity and appropriate postprocessing techniques.In this paper, we consider the linear elasticity problem based on the Hellinger-Reissner variational principle. An O（h2） order superclose property for the stress and displacement and a global superconvergence result of the displacement are established by employing a Clement interpolation, an integral identity and appropriate postprocessing techniques.

关 键 词：ELASTICITY SUPERCLOSENESS Global superconvergence. 

分 类 号：O343.1[理学—固体力学] O31[理学—力学]