薄膜褶皱的非线性屈曲有限元分析  

Non-linear buckling finite element analysis of membrane wrinkling

作　　者：王长国[1] 杜星文[1] 万志敏[1] 

机构地区：[1]哈尔滨工业大学复合材料与结构研究所,哈尔滨150001

出　　处：《计算力学学报》2007年第3期269-274,共6页Chinese Journal of Computational Mechanics

基　　金：国家自然科学基金(59978038)资助项目

摘　　要：有限元模拟已经成为目前薄膜褶皱预测的重要工具。本文采用ANSYS SHELL63单元对薄膜受剪情况下的褶皱形变进行了非线性屈曲分析。通过本征屈曲分析得到的模态模拟了薄膜的初始缺陷。利用本文的非线性有限元模型分析得到了薄膜褶皱的波长和幅度,并与理论分析结果进行了比较,结果相近。Finite element modeling has become an important tool for predicting the membrane wrinkling at present. In this paper, non-linear buckling analysis of the membrane under shearing loads is performed by incorporating the ANSYS SHELL63 element. The initial imperfections are modeled according to the modes of eigenvalue buckling analysis. The wrinkling wavelength and amplitude are obtained by utilizing the non-linear FE model. The results of the FEA show good agreement with the analytical solution.

关 键 词：薄膜 褶皱 非线性屈曲 有限元 

分 类 号：O343.9[理学—固体力学]