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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