On Choices of Stress Modes for Lower Order Quadrilateral Reissner-Mindlin Plate Elements  

作　　者：Guanghui Hu Xiaoping Xie 

机构地区：[1]School of Mathematics, Sichuan University, Chengdu 610064, China

出　　处：《Numerical Mathematics A Journal of Chinese Universities(English Series)》2006年第2期120-126,共7页

基　　金：This work was Supported by the NSFC (10201025).

摘　　要：A kind of stabilized mixed/hybrid scheme for Reissner-Mindlin plates is proposed with conforming isoparametric bilinear interpolations of de?ection/rotations. The choice of shear stress modes is discussed. It is shown by numerical experiments that fulfilling an energy orthogonal condition for stress approximations is crucial to avoiding “shear locking”.A kind of stabilized mixed/hybrid scheme for Reissner-Mindlin plates is proposed with conforming isoparametric bilinear interpolations of deflection/rotations. The choice of shear stress modes is discussed. It is shown by numerical experiments that fulfilling an energy orthogonal condition for stress approximations is crucial to avoiding ＂shear locking＂.

关 键 词：四边形 REISSNER-MINDLIN板 混合有限元 数值计算 

分 类 号：O24[理学—计算数学]