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力学与实践 ›› 2009, Vol. 31 ›› Issue (3): 16-22.doi: 10.6052/1000-0879-2008-043

• 应用研究 • 上一篇    下一篇

Z形折叠管充气展开过程数值模拟与试验

卫剑征 杜星文 谭惠丰 赫晓东   

  1. 哈尔滨工业大学
  • 收稿日期:2008-01-22 修回日期:1900-01-01 出版日期:2009-06-08 发布日期:2009-06-08

SIMULATION AND EXPERIMENT OF DEPLOYMENT PROCESS OF INFLATABLE Z-FOLDED TUBES

  • Received:2008-01-22 Revised:1900-01-01 Online:2009-06-08 Published:2009-06-08

摘要: 针对某型充气太阳能帆板的充气管展开过程,采用分段式充气体积控制模型, 基于有 限元方法模拟了Z形折叠管在空间零重力环境下充气展开过程,分析了管各折叠段内体积 和压力的变化,讨论充气速率对展开动力学特性的影响,并与文献结果进行对比. 建立了充 气展开气浮导轨试验系统,进行了充气展开试验. 结果表明充气速率对展开过程有明显影响, 提高充气速率减缩因子可有效地降低管展开瞬时产生的冲击力作用.

关键词: Z形折叠管, 充气, 展开动力学, 气浮导轨, 有限元法

Abstract: The inflatable deployment tube is a basic support component of space inflatable structures, and a Z-folded configuration is one of the basic folding ways of the inflatable deployment tube of the inflatable solar array discussed in this paper. A model of segments inflatable control volume for deployment process of inflatable tubes is proposed. The inflatable deployment of the Z-folded tube is simulated by finite element method under zero gravity condition. The variations of the volume and pressure in each folded segment are analyzed. Influence of inflation rate on deployment dynamic characteristics is discussed, and compared with those in literature. An inflatable deployment experiment on an air track is conducted. The results demonstrate that variations of inflation rate have a great influence on the deployment process, and increasing the reduction factor of the inflation rate can decrease the impact force action of the tube at the full deployment.

Key words: Z-folded tubes, inflatable, deployment dynamics, air