Nonconforming quadrilateral finite element method for a class of nonlinear sine-Gordon equations
Nonconforming quadrilateral finite element method for a class of nonlinear sine-Gordon equations
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一类非线性正弦-Gordon方程的非协调四边形有限元法
DOI:
10.1016/j.amc.2013.03.008
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发表时间:
2013-05
影响因子:
4
通讯作者:
Pei Lifang
中科院分区:
文献类型:
--
作者:
Shi Dongyang;Pei Lifang
Nonconforming quadrilateral finite element method (FEM) of the two-dimensional nonlinear sine–Gordon equation is studied for semi-discrete and Crank–Nicolson fully-discrete schemes, respectively. Firstly, we prove a special feature of a new arbitrary quadrilateral element (named modified Quasi–Wilson element), i.e., the consistency error is of order O(h2) (h denotes the mesh size) in H1-norm, which leads to optimal order error estimate and superclose result with order O(h2) for the semi-discrete scheme through a different approach from the existing literature. Secondly, because the consistency error estimate of the new modified Quasi–Wilson element can reach a staggering O(h3) order, two orders higher than that of interpolation error, the optimal order error estimates of Crank–Nicolson fully-discrete scheme are obtained on arbitrary quadrilateral meshes with Ritz projection. Moreover, a superclose result in H1-norm is presented on generalized rectangular meshes by a new technique. Thirdly, the global superconvergence results of H1-norm for both semi-discrete and fully-discrete schemes are derived on rectangular meshes with interpolated postprocessing technique. Finally, a numerical test is carried out to verify the theoretical analysis.
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DOI:
--
发表时间:
2003
期刊:
--
影响因子:
--
作者:
Liang Zhongqi
通讯作者:
Liang Zhongqi
影响因子:
1.3
作者:
Guanxiang Wang;Shunhui Zhu
通讯作者:
Guanxiang Wang;Shunhui Zhu
DOI:
--
发表时间:
2005
期刊:
--
影响因子:
--
作者:
Dong-yangShi;Shi-pengMao;Shao-chunChen
通讯作者:
Dong-yangShi;Shi-pengMao;Shao-chunChen
DOI:
10.1016/0045-7825(91)90136-t
发表时间:
1991-03-01
影响因子:
7.2
作者:
ARGYRIS, J;HAASE, M;HEINRICH, JC
通讯作者:
HEINRICH, JC
DOI:
10.1016/j.matcom.2006.11.004
发表时间:
2007-12
期刊:
Math. Comput. Simul.
影响因子:
--
作者:
A. G. Bratsos
通讯作者:
A. G. Bratsos