期刊
COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING
卷 199, 期 9-12, 页码 471-489出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.cma.2009.09.001
关键词
Plate bending; Transverse shear locking; Numerical methods; Finite element method (FEM); Edge-based smoothed finite element method (ES-FEM); Discrete shear gap method (DSG); Stabilized method
An edge-based smoothed finite element method (ES-FEM) for static, free vibration and buckling analyses of Reissner-Mindlin plates using 3-node triangular elements is studied in this paper. The calculation of the system stiffness matrix is performed by using the strain smoothing technique over the smoothing domains associated with edges of elements. In order to avoid the transverse shear locking and to improve the accuracy of the present formulation, the ES-FEM is incorporated with the discrete shear gap (DSG) method together with a stabilization technique to give a so-called edge-based smoothed stabilized discrete shear gap method (ES-DSG). The numerical examples demonstrated that the present ES-DSG method is free of shear locking and achieves the high accuracy compared to the exact solutions and others existing elements in the literature. (C) 2009 Published by Elsevier B.V.
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