复合材料层压板稳态湿度场及应力场分析

ANALYSIS OF STEADY MOISTURE AND STRESS FIELD FOR COMPOSITE LAMINATED PLATES

1.前言 复合材料湿热效应问题一直困惑着设计人员。60年代末到70年代中期,发表大量有关复合材料湿热效应的文献。近年来仍有不少这方面的研究资料,但具有工程实用价值的资料不多见。本文提供的复合材料层压板稳态湿度场及应力场分析方法,向工程实用化迈出了可喜的一步。

: An analysis of steady moisture and stress field in internal construction of composite material is performed by using F. E. M. and on the basis of reviewing the methods that are used to analyse the moisture absorption and moisture field in internal structure of composite material. It is assumed in computation that each ply which consists of laminated plate is transversly isotropic(lay in arbitrary direction) nine nodal points isoparametric elements with additional internal D. O. F. are applied. In this way, high accuracy can be acquired from computing without increasing additional pre-prepara-tion, A large number of examples have shown that the results satisfy the requirments in engineering if laminated plates of graphite composite material are dealt with according to one-dimensional moisture diffusion