Design and Mechanics Analysis of an X-type Cross-section Tubular Boomormalsize
Authors:
- Wenjie FanWFWenjie Fan
- Lin WuLWLin Wu
- 1 January 2017
- journal article
- Published by National Space Science Center, Chinese Academy of Sciences in Chinese Journal of Space Science
- Vol. 37 (5) , 616-621
Abstract
对比分析了不同截面形式管状伸杆的力学性能，发现TRAC截面比STEM和CTM截面具有更大的截面惯性矩与收拢高度之比，但其截面厚度较大，且弯心与形心不重合，导致局部弯扭组合屈曲.提出了一种管状伸杆的新型截面形式XTEM，其具有两个对称轴，弯心与形心重合；设计并建立了四种截面形式的伸杆有限元模型，分析得到了四个截面的截面惯性矩.结果表明，在同样的收拢高度下，XTEM截面伸杆在厚度增加较小的情况下，两个轴向的截面惯性矩比CTM截面分别增加了77%和35%，比STEM截面分别增加了30倍和6.7倍.Keywords
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