正交各向异性叠层复合材料板弯曲分析的有限单元法

文中构造出２０结点４８自由度三维退化层合板单元，用于分析各层片均为正交各向异性的叠层复合材料板的弯曲问题。该单元继承了文单元的优点，增强求解复合材料板的功能，对最有较强的适应性。对比同类问题分析，基于单层和分层理论的各类数值方法及状态空间理论的精确解法。本文方法简便易行，有相当的精度保证，求解效率也远高于上述诸法，是一种适合于结构总体分析的有效方法。

Analysis of Laminated Orthotropic Composite Plates by the Finite Element Method

To analyze the laminated orthotropic composite plates, the 3-D degenerate laminated plate element of 20 nodes 48 freedom is presented herein according to the document 1]. The kind of element , of which the transverse deformation of laminated composite plate is taken account, processes powerful adaptability for the thickness of plate. Being no rotation freedom of element nodes, the element is more effectively than much of the others. Therefore, the method presented in the paper, is a prospective method, and is especially well applied to overall analysis in engineering problems.