Robust a posteriori error estimators for mixed approximation of nearly incompressible elasticity
Robust a posteriori error estimators for mixed approximation of nearly incompressible elasticity
复制标题
用于近不可压缩弹性混合近似的鲁棒后验误差估计器
DOI:
10.1002/nme.6040
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发表时间:
2019
影响因子:
2.9
通讯作者:
Khan A
中科院分区:
文献类型:
--
作者:
Khan A
This paper is concerned with the analysis and implementation of robust finite element approximation methods for mixed formulations of linear elasticity problems where the elastic body is almost incompressible. Several alternative a posteriori error estimators for the energy norm of the finite element error are introduced and analysed. We establish upper and lower bounds for the energy error in terms of these error estimators and show that the constants in the bounds are independent of the Lamé coefficients: The proposed estimators are robust in the incompressible limit. We also consider the requirement for pressure stabilisation when using lowest‐order conforming approximation. Computational results are presented that validate the theoretical estimates. The software used to generate these results is available online.
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DOI:
10.3929/ethz-a-004401327
发表时间:
2002
期刊:
SIAM J. Numer. Anal.
影响因子:
--
作者:
T. Wihler
通讯作者:
T. Wihler
DOI:
--
发表时间:
2018
期刊:
影响因子:
--
作者:
Arbaz Khan;C. Powell;D. Silvester
通讯作者:
D. Silvester
影响因子:
2.9
作者:
G. Gatica;Luis F. Gatica;Filánder A. Sequeira
通讯作者:
Filánder A. Sequeira
影响因子:
2.1
作者:
M. Barrientos;G. Gatica;E. Stephan
通讯作者:
E. Stephan
影响因子:
2.9
作者:
D. Boffi;R. Stenberg
通讯作者:
R. Stenberg