中国空间科学技术

中国空间科学技术 ›› 2011, Vol. 31 ›› Issue (2): 53-57.doi: 10.3780/j.issn.1000-758X.2011.02.009

• 技术交流 • 上一篇    下一篇

星载可展开天线热振动数值分析

刘劲, 朱敏波, 曹罡   

  1. （西安电子科技大学机电工程学院，西安 710071）
  • 收稿日期:2010-09-13 修回日期:2010-11-15 出版日期:2011-04-25 发布日期:2011-04-25
  • 作者简介: 刘 劲 1985年生，2011年获西安电子科技大学机械设计及理论专业硕士学位，主要研究方向为星载电子设备结构冲击振动与热结构耦合。

Numerical Analysis of Thermal Induced Vibration for Deployable Antenna

 LIU  Jin, ZHU  Min-Bo, CAO  Gang   

  1. (School of Electronical and Machanical Engineering, Xidian University, Xi′an 710071)
  • Received:2010-09-13 Revised:2010-11-15 Published:2011-04-25 Online:2011-04-25

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1904

被引次数

14

摘要： 根据非耦合动力学理论及有限元方法，研究分析了星载可展开天线的热振动。利用半正弦波温度冲击模拟热动力荷载，对天线典型节点的热振动位移和应力以及形面精度进行了数值分析。研究表明，急剧变化的温度荷载将导致该天线结构发生热振动，热振动响应明显大于静力学响应。

关键词: 形面精度误差, 温度冲击, 热振动, 可展开天线, 卫星

Abstract: Thermal induced vibration of a deployable antenna was analyzed by the non-coupling dynamics and finite element method. Thermal dynamic forces was simulated by a half sine wave thermal shock. Typical model node displacement and stress, as well as root mean square of antenna induced by thermal dynamic forces were discussed. The results show that thermal induced vibration of antenna occurs when thermal dynamic forces greatly change. Meanwhile, the dynamic response of thermal induced vibration is significantly greater than that of the static response.

Key words: Root mean square, Thermal shock, Thermally induced vibration, Deployable antenna, Satellite