摘要
通过对探测器杜瓦组件的悬臂梁结构进行理论分析,提出了杜瓦组件力学薄弱结构的优化设计方法,并利用Ansys软件对优化前后的杜瓦组件结构进行了模拟分析。结果表明,杜瓦组件的模态一阶基频大幅提高,比平行支撑结构的组件增加了130%,比常规无支撑结构的组件增加了317%。通过试验验证后发现,杜瓦组件的抗振动性能也得到了大幅提高,可以抗住15 g的耐久随机振动、17.6 g的短时大量级随机振动以及2000 g的机械冲击。
Based on the theoretical analysis of the cantilever beam structure of the detector-dewar assembly,the optimal design method of the mechanical weak structure of the dewar assembly is proposed,and Ansys software is used to simulate the structure of the dewar assembly before and after optimization.The results show that the modal first order fundamental frequency of dewar assemblies is significantly increased,which is 130%higher than that of parallel supported assemblies and 317%higher than that of conventional unsupported assemblies.Through the test verification,it is found that the vibration resistance of dewar assemblies has also been greatly improved,and 15 g durable random vibration,17.6 g short-term mass random vibration as well as 2000 g mechanical impact can be resisted.
作者
张杨文
沈星
洪晓麦
程海玲
李云鹏
周恩
李明畅
曾卓
黄昊
黄立
ZHANG Yang-wen;SHEN Xing;HONG Xiao-mai;CHENG Hai-ling;LI Yun-peng;ZHOU En;LI Ming-chang;ZENG Zhuo;HUANG Hao;HUANG Li(Wuhan Guide Infrared Co.,Ltd.,Wuhan 430205,China)
出处
《红外》
CAS
2023年第8期20-27,共8页
Infrared
基金
国家重点研发计划资助课题(2018YFB2200301)
研究生科研与实践创新计划校级项目(2021XKT1254)。
关键词
红外探测器
杜瓦
振动
机械冲击
infrared detector
dewar
vibration
mechanical impact
