›› 2010, Vol. 30 ›› Issue (5): 23-30.

• 研究探讨 • 上一篇    下一篇

卫星结构悬浮式设计方案的热变形抑制作用分析

张静1, 白绍竣1, 尉飞1, 郑钢铁1,2   

  1. (1 哈尔滨工业大学航天学院, 哈尔滨 150001)(2 清华大学宇航学院, 北京 100084)
  • 收稿日期:2009-09-18 修回日期:2010-02-10 出版日期:2010-10-25 发布日期:2010-10-25
  • 作者简介:张 静 1981年生,2010年获哈尔滨工业大学航天学院飞行器结构动力学与控制研究所博士学位,研究方向为飞行器结构设计与动力学计算。
  • 基金资助:

    CAST创新基金项目

Thermal Deformation Release Analysis of Satellite′s Floating Design Method

ZHANG  Jing1, BAI  Shao-Jun1, WEI  Fei1, ZHENG  Gang-Tie1,2   

  1. (1 School of Astronautics, Harbin Institute of Technology, Harbin 150001)(2 School of Aerospace, Tsinghua University, Beijing 100084)
  • Received:2009-09-18 Revised:2010-02-10 Online:2010-10-25 Published:2010-10-25

摘要: 基于阻尼柔性连接装置的卫星结构悬浮式设计方案旨在既不降低结构完整性和支撑强度,又能为热应力提供释放空间,同时提供较高的阻尼以保证结构的振动抑制要求。文章从柔性连接的热应力释放机理出发,分析了影响卫星结构(主要是敏感仪器)热变形的主要因素,并且给出了复杂结构的设计准则。理论分析结果表明结构悬浮式设计方案可以有效改善敏感仪器的热变形情况,并且可以通过调整各部分的刚度来获得不同的抑制效果。最后通过实例证明了这种分析方法的有效性。

关键词: 柔性连接, 悬浮式设计, 热变形释放, 振动抑制, 卫星结构

Abstract: Floating design method (FDM) with high damping flexible connectors (HDFCs) aims at both releasing thermal deformation and attenuating vibration of the sensitive payloads during satellite in orbit phase, meanwhile, it can also prevent the reduction of structure strength. The effect on thermal deformation release of FDM was discussed. Based on the release theory of thermal stress by using FDM, the function of the flexible connections on structure′s thermal deformation was studied. And the thermal deformation of satellite structure, mainly the sensitive part, was analyzed and some design criteria was listed. Results show that FDM is quite effective on reducing payload′s thermal deformation, and its effect is greatly dependent on HDFC′s stiffness. Finally, the validity of the proposed analysis method was proved by numerical examples.

Key words: Flexible Connection, Floating design, Thermal deformation release, Vibration suppression, Satellite structure