中国空间科学技术

中国空间科学技术 ›› 2013, Vol. 33 ›› Issue (2): 7-12.doi: 10.3780/j.issn.1000-758X.2013.02.002

• 研究探讨 • 上一篇    下一篇

航天器随机振动设计载荷比较

 张玉梅, 韩增尧, 刘绍奎   

  1. 北京空间飞行器总体设计部，北京 100094
  • 收稿日期:2012-08-02 修回日期:2012-09-26 出版日期:2013-04-25 发布日期:2013-04-25
  • 作者简介:张玉梅 1981年生，2005年获得南京航空航天大学机械设计及理论专业硕士学位，现为中国空间技术研究院飞行器设计专业博士研究生。主要研究方向为航天器结构动力学。
  • 基金资助:

    国家重点基础研究发展计划（973计划）（613133）

Comparison Between Spacecraft Design Load of Random Vibration

 ZHANG  Yu-Mei, HAN  Zeng-Yao, LIU  Shao-Kui   

  1. Beijing Institute of Spacecraft System Engineering, Beijing 100094
  • Received:2012-08-02 Revised:2012-09-26 Published:2013-04-25 Online:2013-04-25

PDF (PC)

1581

被引次数

3

摘要： 将直接影响航天器结构质量的随机振动载荷等效为准静态的设计载荷，是航天器结构设计分析中的一项重要内容。文章简要介绍了基于加速度峰值响应等效的设计载荷与基于位移峰值响应等效的设计载荷的原理与方法；重点运用解析法与有限元仿真比较了两种方法的差别，分析得出基于加速度的设计载荷要大于基于位移的设计载荷。文章推荐使用基于位移峰值响应等效的设计载荷，该方法将有效减轻结构质量。

关键词: 随机振动, 设计载荷, 准静态载荷, 响应等效, 航天器

Abstract: It is an important step for spacecraft design and analysis to convert random vibration load to quasi static design load， which influences mass of spacecraft structure directly. The theory and methods of design load based on the peak value of acceleration response and displacement response were simply introduced. The differences between the two methods were compared by analytics and FEM. The design load based on the peak value of acceleration response is larger than that based on the peak value of displacement response. The design load based on the peak value of displacement response is recommended and will lighten mass of spacecraft structure.

Key words: Random vibration, Design load, Quasi static load, Equivalent response, Spacecraft