刊名:Computer Methods in Applied Mechanics and Engineering
出版年:2008
出版时间:1 June 2008
年:2008
卷:197
期:33-40
页码:3014-3023
全文大小:253 K
文摘
Following some de Rham complex, Arnold and Winther have recently proposed a symmetric mixed finite element method (MFEM) in linear elasticity. This paper describes the implementation of the symmetric MFEM and its 30 × 30 local stress stiffness matrices and studies the implementation of the lowest-order scheme for general boundary conditions. Numerical experiments in model examples in computational mechanics illustrate the robust locking-free convergence behavior and support the theoretically predicted experimental convergence rates.