基于LS-DYNA的包带式星箭连接装置分离过程和冲击响应分析

武新峰;刘观日;雷勇军;宋保永;王帅;于兵

振动与冲击 ›› 2013, Vol. 32 ›› Issue (24) : 174-179.

PDF(1870 KB)
PDF(1870 KB)
振动与冲击 ›› 2013, Vol. 32 ›› Issue (24) : 174-179.
论文

基于LS-DYNA的包带式星箭连接装置分离过程和冲击响应分析

  • 武新峰1,刘观日1,2,雷勇军1,宋保永2,王帅2,于兵2
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Separation Process and Shock Analysis of Clamp Band Systems based on LS-DYNA

  • WU Xin-feng1, Liu Guan-ri1,2,LEI Yong-jun1,SONG Bao-yong2,WANG Shuai2,YU Bing2
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摘要

采用显式非线性动力学分析方法来研究包带式星箭连接装置的分离过程和冲击响应,给出了有限元建模和预紧力施加方法,采用LS-DYNA软件计算得到了某包带式星箭连接装置的包带动态包络和冲击响应;分析了对接框刚度、抗剪凸台、分离弹簧和拉伸弹簧刚度系数等参数对分离冲击的影响,并采用单自由度“弹簧-质量”系统模拟缓释过程,讨论了缓释过程对分离冲击的影响。结果表明:(1)采用显式非线性动力学分析方法能够同时解决星箭分离过程仿真和冲击响应分析问题;(2)增加对接框刚度,合理设计抗剪凸台高度,适当减小分离弹簧推力和拉伸弹簧拉力均可降低分离冲击响应;(3)延长解锁装置释放时间能够同时降低最大冲击响应峰值及其对应频率。

Abstract

The explicit nonlinear analysis method was applied to solve the separation process and shock analysis of clamp band systems. Finite element and pre-tension force modeling methods were present, and then the dynamic envelope of clamp band and separation shock responses were obtained using LS-DYNA. The effects of interface rings’ stiffness, shearing lips, stiffness factors of kick-off spring and pulling spring on the separation shock response were analyzed, while a single degree ‘spring-mass’ system was utilized to simulate the release process. It indicates that: (1) the approach proposed in this paper can be used to solve both the simulation of separation process and shock analysis of clamp band systems; (2) the separation shock can be reduced by increasing interface rings’ stiffness, appropriate height of shearing lips, decreasing the stiffness factors of kick-off spring and pulling spring. (3) The delay of the release time will reduce the max shock response and the relative frequency.



关键词

包带式星箭连接装置 / 显式非线性分析 / 动态包络 / 分离冲击

Key words

Clamp band system / explicit nonlinear analysis / dynamic envelope / separation shock

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武新峰;刘观日;雷勇军;宋保永;王帅;于兵. 基于LS-DYNA的包带式星箭连接装置分离过程和冲击响应分析[J]. 振动与冲击, 2013, 32(24): 174-179
WU Xin-feng;Liu Guan-ri;LEI Yong-jun;SONG Bao-yong;WANG Shuai;YU Bing. Separation Process and Shock Analysis of Clamp Band Systems based on LS-DYNA[J]. Journal of Vibration and Shock, 2013, 32(24): 174-179

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