折叠(DSP实现)
复合数
半径
力矩(物理)
流离失所(心理学)
空格(标点符号)
繁荣
结构工程
机械
材料科学
经典力学
工程类
物理
计算机科学
复合材料
环境工程
操作系统
心理学
计算机安全
心理治疗师
作者
Tian-Wei Liu,Jiang-Bo Bai,Nicholas Fantuzzi
标识
DOI:10.1016/j.actaastro.2023.04.012
摘要
The thin-walled tubular deployable composite boom (DCB) can realize folding and deploying functions, and it has a good application prospect in space field. This paper investigates the folding behaviour of the tubular DCB by analytical modeling. Based on the Archimedes’ helix, the geometrical model of the DCB was established. By combining equilibrium equation and energy principle, an analytical model to predicted the folding moment versus rotational displacement of the DCB was presented. The failure indices in the equal-sense and opposite-sense folding processes were calculated utilizing Tsai‐Hill and maximum stress criteria. Analytical results agreed well with experimental and numerical results. At last, the influence of geometric parameters (i.e., radius, central angle and thickness of cross-section) on the folding behaviour of the DCB was further studied using the analytical model.
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