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Pointwise superconvergence of recovered gradients for piecewise linear finite element approximations to problems of planar linear elasticity

 

作者: G. Goodsell,   J. R. Whiteman,  

 

期刊: Numerical Methods for Partial Differential Equations  (WILEY Available online 1990)
卷期: Volume 6, issue 1  

页码: 59-74

 

ISSN:0749-159X

 

年代: 1990

 

DOI:10.1002/num.1690060105

 

出版商: John Wiley&Sons, Inc.

 

数据来源: WILEY

 

摘要:

AbstractIn this paper we consider piecewise linear finite element approximations to the problem of planar linear elasticity, and present some new estimates for the pointwise (L∞) superconvergence of a recovered gradient function to the gradient of the true solution. This extends to linear elasticity the previous work of the present and other authors onL∞results for Poisson problems, and at the same time, to theL∞norm the previousL2results of the authors for linear elast

 

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