分离螺栓解锁冲击下薄壁圆筒缓冲性能研究  

Study on Cushioning Property of Thin-Walled Cylinders under Unlocking Impact of Separation Bolt

作　　者：李微微 付丽强 龚钰哲 许斌 丁星 LI Weiwei;FU Liqiang;GONG Yuzhe;XU Bin;DING Xing(Shanghai Electro-Mechanical Engineering Institute,Shanghai 201109,China;NO.63961 Unit,PLA,Beijing 100012,China)

机构地区：[1]上海机电工程研究所,上海201109 [2]中国人民解放军63961部队,北京100012

出　　处：《空天防御》2023年第2期43-48,共6页Air & Space Defense

基　　金：国家重点研发计划(2022YFB3705304)。

摘　　要：分离螺栓解锁时会产生较大的冲击,为了避免解锁冲击对飞行器结构产生破坏,需要对冲击能量进行缓冲吸收。基于薄壁圆筒吸能原理,在有限安装空间内设计缓冲吸能装置,利用有限元计算方法,对不同厚度、不同冲击速度条件下薄壁圆筒的缓冲性能进行数值分析,并通过缓冲试验进行验证。研究结果表明:薄壁圆筒具有良好的缓冲吸能效果,在结构未完全压溃的条件下,薄壁圆筒壁厚越小,缓冲效果越好;冲击速度与薄壁圆筒缓冲性能具有明显相关性,呈现出强非线性关系。There has a significant impact when the separation bolt is unlocked,therefore to avoid damage to the aircraft structure,the impact energy needs to be absorbed.A cushioning energy absorption device was designed in a limited installation applying the energy absorption principle of the thin-walled cylinder.The cushioning property of thin-walled cylinders with different thicknesses and different impact velocities were analyzed using the finite element method and were verified by the cushion test.The results show that when the aircraft structure is not completely crushed,the thinwalled cylinder performs effectively in cushioning energy absorption,the smaller the wall thickness of the thin-walled cylinder,the better the cushioning effect.The impact velocity has an outstanding correlation with the cushioning property and exhibits a solid nonlinear relationship.

关 键 词：分离螺栓 解锁冲击 薄壁圆筒 缓冲性能 

分 类 号：O344[理学—固体力学]