Volume 10, Issue 1
New Residual Based Stabilization Method for the Elasticity Problem

Minghao Li ,  Dongyang Shi and Ying Dai

10.4208/aamm.2016.m1464

Adv. Appl. Math. Mech., 10 (2018), pp. 100-113.

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  • Abstract

In this paper, we consider the mixed finite element method (MFEM) of the elasticity problem in two and three dimensions (2D and 3D). We develop a new residual based stabilization method to overcome the inf-sup difficulty, and use Langrange elements to approximate the stress and displacement. The new method is unconditionally stable, and its stability can be obtained directly from C´ea’s lemma. Optimal error estimates for the H1 -norm of the displacement and H(div)-norm of the stress can be obtained at the same time. Numerical results show the excellent stability and accuracy of the new method.

  • History

Published online: 2018-10

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