Volume 7, Issue 5
Asymptotic Expansions and Extrapolations of H1-Galerkin Mixed Finite Element Method for Strongly Damped Wave Equation

Dongyang Shi, Qili Tang & Xin Liao

Adv. Appl. Math. Mech., 7 (2015), pp. 610-624.

Published online: 2018-05

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  • Abstract

In this paper, a high-accuracy H1-Galerkin mixed finite element method (MFEM) for strongly damped wave equation is studied by linear triangular finite element. By constructing a suitable extrapolation scheme, the convergence rates can be improved from O(h) to O(h3) both for the original variable u in H1(Ω) norm and for the actual stress variable p = ∇ut in H(div;Ω) norm, respectively. Finally, numerical results are presented to confirm the validity of the theoretical analysis and excellent performance of the proposed method.

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@Article{AAMM-7-610, author = {Dongyang Shi, Qili Tang and Xin Liao}, title = {Asymptotic Expansions and Extrapolations of H1-Galerkin Mixed Finite Element Method for Strongly Damped Wave Equation}, journal = {Advances in Applied Mathematics and Mechanics}, year = {2018}, volume = {7}, number = {5}, pages = {610--624}, abstract = {

In this paper, a high-accuracy H1-Galerkin mixed finite element method (MFEM) for strongly damped wave equation is studied by linear triangular finite element. By constructing a suitable extrapolation scheme, the convergence rates can be improved from O(h) to O(h3) both for the original variable u in H1(Ω) norm and for the actual stress variable p = ∇ut in H(div;Ω) norm, respectively. Finally, numerical results are presented to confirm the validity of the theoretical analysis and excellent performance of the proposed method.

}, issn = {2075-1354}, doi = {https://doi.org/10.4208/aamm.2013.m90}, url = {http://global-sci.org/intro/article_detail/aamm/12066.html} }
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