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空间充气薄膜结构的褶皱分析
引用本文:王长国,杜星文,赫晓东.空间充气薄膜结构的褶皱分析[J].力学学报,2008,40(3):331-338.
作者姓名:王长国  杜星文  赫晓东
作者单位:哈尔滨工业大学复合材料研究所,150080 哈尔滨工业大学复合材料与结构研究所 哈尔滨工业大学复合材料与结构研究所
摘    要:引入一个表征褶皱在纹理方向收缩特性的参数``收缩系数'来替代泊松比参与计算褶 皱形变,并联合褶皱产生时的应力条件和褶皱特性,实现了对空间充气薄膜结构的褶皱分析, 得到了褶皱存在时的充气薄膜结构的应力场和变形. 分析中重点讨论了``收缩系数'与泊松 比的关系,并讨论了引入``收缩系数'约束变形后的变形协调条件. 将两维的褶皱分析方法 拓展应用到三维充气结构的褶皱分析中,分析了充气管的弯皱变形,得到了临界皱曲和极限 弯矩随结构及力学参数的变化规律. 通过简单的褶皱试验,定性地分析了褶皱的形变特性并 与分析结果进行了比较验证,结果一致.

关 键 词:充气薄膜结构  薄膜  褶皱  收缩系数
收稿时间:2006-08-02
修稿时间:2007-03-16

WRINKLING ANALYSIS OF SPACE INFLATABLE MEMBRANE STRUCTURES
Wang Changguo,Du Xingwen,He Xiaodong.WRINKLING ANALYSIS OF SPACE INFLATABLE MEMBRANE STRUCTURES[J].chinese journal of theoretical and applied mechanics,2008,40(3):331-338.
Authors:Wang Changguo  Du Xingwen  He Xiaodong
Institution:Post-doctoral Research Center in Material Science and Engineering, Harbin Institute of Technology, Harbin 150001, China Center for Composite Materials, Harbin Institute of Technology, Harbin 150080, China Center for Composite Materials, Harbin Institute of Technology, Harbin 150080, China
Abstract:In this paper, the wrinkling analysis of space inflatable membrane structure was performed with the application of the contraction factor, the stress condition and wrinkling characteristic. The parameter of the contraction factor was introduced to show the contraction in the direction of texture, not the concept of the Poisson's ratio. The stress field and deformation of the wrinkled inflatable membrane structure were obtained. A deep discussion on the relationship between the Poisson's ratio and the contraction factor. Was carried out and the compatibility condition of the deformation was redefined. Furthermore, the 2-D wrinkling analytical method was extended into the case of the 3-D inflated structures. The flexural wrinkling of an inflated cylinder tube was analyzed to obtain the relationship between the critical wrinkling and the structural or mechanical parameters. The theoretical results were quantitatively verified and well agreed with the experimental results.
Keywords:space inflatable structure  membrane  wrinkle  contraction factor  
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