期刊论文

Finite element analysis of elastic strain energy and principal stress for rectangular shear aerospace wrinkling membrane

中文

空间结构

1006-6578

2020

26

02

3-10

10.13849/j.issn.1006-6578.2020.02.003

C1320060312:民用航天预研项目 JG2018B089:学位与研究生教育研究课题 2016XQD47:南华大学留学归国科研启动基金

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薄膜因其厚度薄、抗弯刚度小,当外载荷产生的压应力超过临界压应力时,会出现局部屈曲现象而形成褶皱.褶皱的出现不仅会影响薄膜结构的表面精度,还会改变结构的应力分布状态,进而影响结构的静力和动力特性.研究褶皱的影响因素及其机理,对准确预测薄膜褶皱变形、有效控制或消除褶皱变形,具有重要的意义.本文对矩形受剪切空间薄膜的褶皱进行数值分析.首先,运用非线性屈曲法、直接干扰法以及显式动力法分别对薄膜结构的褶皱进行分析,研究褶皱的数量、褶皱的几何信息与分布情况,并通过与实验结果的对比,验证数值分析方法的正确性.其次,在非线性屈曲法、直接干扰法和显式动力法中选取最合适的方法,以非...

Due to its thin thickness and small flexural rigidity,when compressive stress produced by external load exceeds critical compressive stress,local buckling of the membrane will occur and wrinkles will be formed.The appearance of wrinkles will not only affect surface precision of membrane structure but also change stress distribution of structures,which will affect static and dynamic characteristics of structures.It is of great significance to study influencing factors and their influencing mechanism of wrinkles,to accurately predict deformation of membrane wrinkles and to effectively control or...