复合材料迭层板壳有限单元法现状分析

本文从剖析单元构成因素的角度出发,综合评述了目前用于复合材料板壳结构分析的各种有限单元,分析了这些单元的特点及其适用范围,并说明Mindlin类等参板壳单元广泛应用迭层板壳的原因以及存在问题、解决办法。还深入地讨论了杂交单元应用至迭层板壳计算的优点。

A REVIEW OF FINITE ELEMENT TECHNIQUES IN LAMINATED PLATES AND SHELLS

This paper oomp:ehensively reviewed a variety of finite elements used in current analysis of laminted composite plates and shells. Of these kinds of elements, Mindlin-type elements are most frequently used to laminated plates and shells.Mindlin-type elements are suitable not only for classical thin and moderately thick plates and shells but also for linear and nonlinear problems of composites.As the ratio of thickness to span of the plate and/or shell increases,however,so-called ‘lockiug' becomes noticeable.Some resolving procedures have been proposed herein.Finally,the paper discussed the advantages and disadvaantages of assumed stress hybrid elements in the application to laminated composite structure analysis.