Local Buckling in Crease Induced by Wrapping Fold of Space Membrane
Local Buckling in Crease Induced by Wrapping Fold of Space Membrane
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DOI：
10.2514/1.a32416
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发表时间：
2012-04
影响因子：
1.6
通讯作者：
Y. Satou;H. Furuya
中科院分区：
文献类型：
--
作者：
Y. Satou;H. Furuya
本文讨论了折痕膜中引起的局部屈曲的力学，它决定了空间膜的折叠尺寸和残余变形。通过演示有限元模拟来研究局部屈曲的细节。基于通过模拟获得的局部屈曲特性，考虑到折痕膜的变形形状，制定了一个简单的分析模型，以确定局部屈曲的主要参数和条件。这些结果通过进行包裹折叠实验得到验证。基于这些结果，讨论了局部屈曲的机理。通过理论分析，得到了局部屈曲的主导参数：拉力、膜厚、折线间距、中心轮毂半径。局部屈曲的条件被确定为主要参数的函数，并且该条件与实验获得的结果非常吻合。
This paper addresses the mechanics of local buckling induced in the creased membrane, which determines the folded size and the residual deformation of space membranes. The details of local buckling are investigated by demonstrating finite-element simulations. Based on properties of local buckling obtained through simulations, a simple analytical model is formulated in consideration of the deformed shape of the creased membrane to identify the dominant parameters and the conditions for local buckling. These results are verified by performing wrapping fold experiments. Based on these results, the mechanics of local buckling are discussed. The dominant parameters of local buckling are obtained by theoretical analysis in terms of the tensile force, the membrane thickness, the interval of the fold line, and the center hub radius. Conditions for local buckling are identified as the function of the dominant parameters, and the conditions show good agreement with the experimentally obtained results.