Impact damage boundary of spacecraft plug-in components

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Journal of Vibration and Shock ›› 2020, Vol. 39 ›› Issue (21) : 71-78.

XU Zijian1, NANGONG Zijun1,2, LI Bingwei1, ZHANG Zijun1, YU Muchun1, NIU Zhiling1

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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

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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[J]. Journal of Vibration and Shock, 2020, 39(21): 71-78

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