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ENHANCED SUPERCONVERGENT PATCH RECOVERY INCORPORATING EQUILIBRIUM AND BOUNDARY-CONDITIONS

被引：127
作者：
WIBERG, NE
ABDULWAHAB, F
ZUIKAS, S
机构：
[1] Chalmers University of Technology, Department of Structural Mechanics, Göteborg
来源：
INTERNATIONAL JOURNAL FOR NUMERICAL METHODS IN ENGINEERING | 1994年 / 37卷 / 20期
关键词：
D O I：
10.1002/nme.1620372003
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Patch recovery based on superconvergent derivatives and equilibrim (SPRE), an enhancement of the Superconvergent Patch Recovery (SPR), is studied for linear elasticity problems. The paper also presents a further improvement for recovery of derivatives near boundaries, SPREB, where either tractions or displacements are prescribed. This is made by inclusion of weighted residual errors at boundary points in the patch recovery. A pronounced improvement in the post processed gradients of the finite element solution is observed by this method.
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收藏
页码：3417 / 3440
页数：24
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