复合材料四结点四边形多层退化壳单元

A COMPOSITE 4-NODE QUADRILATERAL DEGENERATED FINITE ELEMENT FOR MULTILAYERED SHELLS

1.
Department of Naval Architecture & Ocean Engineering, ShanghaiJiao Tong University, 200030;
2.
Research Institute of Engineering Mechanics, Dalian University of Technology, 116023

摘要

摘要: 本文提出了一个复合材料四结点四边形多层退化壳单元。单元从修正的Hu-Washizu变分原理导出,独立假设位移场、每层内部应变场和应力场。文中给出了几个复合材料板和壳静力线性问题实例。计算结果表明本文的单元是准确和有效的。
- 广义杂交壳单元 /
- 变分原理 /
- 复合材料多层板壳
Abstract: A composite 4-node quadrilateral degenerated finite element for multilayered shells is presented in this article. The element is derived based on a modified Hu-Washizu variational principle with independently assumed displacement, laminate internal strain fields and stress fields. The element' s performance for static linear problems of composite plates and shells is evaluated. The computed results show that the present element yields accurate solutions for the test problems presented.
- generalized hybrid finite element for shells /
- variational principle /
- composite multilayered plates and shells