数学物理学报(英文版) ›› 2018, Vol. 38 ›› Issue (2): 450-470.doi: 10.1016/S0252-9602(18)30760-4

• 论文 • 上一篇    下一篇

CONTINUOUS FINITE ELEMENT METHODS FOR REISSNER-MINDLIN PLATE PROBLEM

段火元1, 马俊华2   

  1. 1. School of Mathematics and Statistics, Collaborative Innovation Centre of Mathematics, Computational Science Hubei Key Laboratory, Wuhan University, Wuhan 430072, China;
    2. School of Mathematics and Statistics, Wuhan University, Wuhan 430072, China
  • 收稿日期:2016-06-17 修回日期:2017-01-02 出版日期:2018-04-25 发布日期:2018-04-25
  • 作者简介:Huoyuan DUAN,E-mail:hyduan.math@whu.edu.cn;Junhua MA,E-mail:2015202010036@whu.edu.cn
  • 基金资助:

    The first author is supported by NSFC (11571266, 91430106, 11171168, 11071132), NSFC-RGC (China-Hong Kong) (11661161017).

CONTINUOUS FINITE ELEMENT METHODS FOR REISSNER-MINDLIN PLATE PROBLEM

Huoyuan DUAN1, Junhua MA2   

  1. 1. School of Mathematics and Statistics, Collaborative Innovation Centre of Mathematics, Computational Science Hubei Key Laboratory, Wuhan University, Wuhan 430072, China;
    2. School of Mathematics and Statistics, Wuhan University, Wuhan 430072, China
  • Received:2016-06-17 Revised:2017-01-02 Online:2018-04-25 Published:2018-04-25
  • Supported by:

    The first author is supported by NSFC (11571266, 91430106, 11171168, 11071132), NSFC-RGC (China-Hong Kong) (11661161017).

摘要:

On triangle or quadrilateral meshes, two finite element methods are proposed for solving the Reissner-Mindlin plate problem either by augmenting the Galerkin formulation or modifying the plate-thickness. In these methods, the transverse displacement is approximated by conforming (bi)linear macroelements or (bi)quadratic elements, and the rotation by conforming (bi)linear elements. The shear stress can be locally computed from transverse displacement and rotation. Uniform in plate thickness, optimal error bounds are obtained for the transverse displacement, rotation, and shear stress in their natural norms. Numerical results are presented to illustrate the theoretical results.

关键词: Reissner-Mindlin plate, continuous element, triangle element, quadrilateral element, finite element method, uniform convergence

Abstract:

On triangle or quadrilateral meshes, two finite element methods are proposed for solving the Reissner-Mindlin plate problem either by augmenting the Galerkin formulation or modifying the plate-thickness. In these methods, the transverse displacement is approximated by conforming (bi)linear macroelements or (bi)quadratic elements, and the rotation by conforming (bi)linear elements. The shear stress can be locally computed from transverse displacement and rotation. Uniform in plate thickness, optimal error bounds are obtained for the transverse displacement, rotation, and shear stress in their natural norms. Numerical results are presented to illustrate the theoretical results.

Key words: Reissner-Mindlin plate, continuous element, triangle element, quadrilateral element, finite element method, uniform convergence