航天器插装型元器件冲击损伤边界研究

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摘要航天器插装型元器件在严酷的冲击环境下容易发生损伤失效，影响航天电子设备正常工作，甚至造成飞行事故。采用冲击动力学响应分析的方法构造了插装型元器件的冲击损伤边界，并针对航天器常用的插装型元器件——SMA（Sub-Miniature-A）射频同轴连接器开展数值仿真与冲击试验，对插装型元器件的冲击损伤边界进行验证。结果表明，当冲击环境优势频率（Dominant Frequency）低于元器件一阶固有频率时，插装型元器件冲击损伤边界为冲击环境的绝对加速度响应渐近线；当冲击环境优势频率高于元器件一阶固有频率时，插装型元器件冲击损伤边界为冲击环境的相对位移响应渐近线。研究成果可以为基于损伤等效的冲击试验条件等效技术研究与航天器环境适应性设计提供重要基础。

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	徐子健1
	南宫自军1
	2
	李炳蔚1
	张子骏1
	余慕春1
	牛智玲1

关键词 ：航天器, 冲击环境, 插装型元器件, 损伤边界, 冲击响应谱

Abstract：Spacecraft plug-in components can be damaged easily under serious shock environment to affect harmfully normal operation of aerospace electronic equipment, and even cause flight accidents.Impact dynamic response analysis was used to construct the impact damage boundary of plug-in components.Aiming at a frequently used plug-in component in spacecraft called Sub-Miniature-A (SMA) RF coaxial connector, numerical simulation and impact tests were conducted to verify its impact damage boundary.Results showed that when the dominant frequency of shock environment is lower than the first order natural frequency of SMA connector, its impact damage boundary is the absolute acceleration response asymptote of shock environment; when the dominant frequency of shock environment is higher than the first order natural frequency of SMA connector, its impact damage boundary is the relative displacement response asymptote of shock environment; the study results can provide an important base for the equivalent technique study of impact test conditions based on damage equivalent and the environmental adaptability design of spacecrafts.

Key words： spacecraft shock environment plug-in components damage boundary impact response spectrum

收稿日期: 2019-06-19 出版日期: 2020-10-28

引用本文:

徐子健1，南宫自军1,2，李炳蔚1，张子骏1，余慕春1，牛智玲1. 航天器插装型元器件冲击损伤边界研究[J]. 振动与冲击, 2020, 39(21): 71-78.
XU Zijian1, NANGONG Zijun1,2, LI Bingwei1, ZHANG Zijun1, YU Muchun1, NIU Zhiling1. Impact damage boundary of spacecraft plug-in components. JOURNAL OF VIBRATION AND SHOCK, 2020, 39(21): 71-78.

链接本文:

http://jvs.sjtu.edu.cn/CN/ 或 http://jvs.sjtu.edu.cn/CN/Y2020/V39/I21/71

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