航天器环境工程2024，Vol.41Issue(2)：167-175,9.DOI:10.12126/see.2023138
伽马射线探测器冲击减振设计及验证
Design and validation on impact damping performance of a gamma ray detector
摘要
Abstract
In view of the serious damage to the sensitive components of a gamma ray detector from impacting,the influence of damping layer dimension parameters of the shock absorber on its overall natural frequency and impact resistance performance was studied.The effect of the thin-walled structure on the vibration suppression and impact transmission was also investigated.The vibration reduction was completed by proper design of the shock absorber,reasonable selection of damping layer dimension parameters,adding the secondary stage damping buffer,and improving the thin-walled structure.Finally,the design was verified through simulation and test.It is shown that the shock absorber can reduce the structural stiffness and significantly attenuate the impact.The outer diameter of the damping layer is the main factor for improving the shock resistance,as both the overall natural frequency and the impact response decrease with the increasing diameter.The thin-walled structures have an amplification effect on excitation,whose impact response can be reduced by adjusting local structures.The secondary stage damping buffer exhibits a good vibration reduction effect on the key components,and the effect is more pronounced at low frequencies.The above study may provide a reference for the shock attenuation of spacecraft with structural constraints.关键词
减振设计/有限元法/阻尼层/冲击减振/二级阻尼缓冲减振Key words
vibration reduction design/finite element method/damping layer/impact damping/secondary stage damping buffer vibration reduction分类
航空航天引用本文复制引用
张志港,孟春玲,王瑞杰,董永伟,孙建超..伽马射线探测器冲击减振设计及验证[J].航天器环境工程,2024,41(2):167-175,9.基金项目
国家自然科学基金项目(编号:11961141013) （编号:11961141013）
国家自然科学基金委员会-中国科学院天文联合基金项目(编号:U1631242) （编号:U1631242）
