| 航天器火工分离螺母的火工冲击环境数值仿真研究 |
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| 引用本文： | 张欢,刘天雄,李长江,向树红,张庆明.航天器火工分离螺母的火工冲击环境数值仿真研究[J].航天器环境工程,2014,31(4):363-368. |
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| 作者姓名： | 张欢 刘天雄 李长江 向树红 张庆明 |
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| 作者单位： | 1. 北京空间飞行器总体设计部, 北京 100094;2. 北京卫星环境工程研究所, 北京 100094;3. 北京理工大学 爆炸科学与技术国家重点实验室, 北京 100081 |
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| 基金项目： | “十二五”星箭可靠性增长课题 |
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| 摘 要： | 为了研究航天器分离时火工分离螺母产生的火工冲击环境特性,了解火工冲击载荷的机制和特点,直观观测应力波在结构材料中的传播过程,使用LS-DYNA非线性有限元程序模拟了火工分离螺母的动态分离过程,给出了典型响应及输出载荷,并通过火工分离螺母-结构一体化仿真得到了星箭界面载荷,为航天器火工冲击环境防护设计提供更加真实的输入条件。
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| 关 键 词： | 航天器 火工分离螺母 火工冲击环境防护 有限元 结构响应 数值仿真预示 |
| 收稿时间： | 5/9/2014 12:00:00 AM |
| 修稿时间： | 2014/7/22 0:00:00 |
Numerical simulation of pyrotechnic shock environment concerning pyroshock separation nut of spacecraft |
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| Zhang Huan,Liu Tianxiong,Li Changjiang,Xiang Shuhong,Zhang Qingming.Numerical simulation of pyrotechnic shock environment concerning pyroshock separation nut of spacecraft[J].Spacecraft Environment Engineering,2014,31(4):363-368. |
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| Authors: | Zhang Huan Liu Tianxiong Li Changjiang Xiang Shuhong Zhang Qingming |
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| Institution: | 1. Beijing Institute of Spacecraft System Engineering, Beijing 100094, China;2. Beijing Institute of Spacecraft Environment Engineering, Beijing 100094, China;3. State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, China |
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| Abstract: | To study the characteristics of the pyrotechnic shock environment concerning a pyroshock separation nut, the mechanism of the pyroshock load, and the process of the stress wave propagation in the structural materials, the dynamic shock process of the pyroshock separation nut is simulated by using the LS-DYNA non-linear FEA software, and the acceleration response and the load curve at typical positions, and the load curve of the interface of the satellite and the launch vehicle are obtained by an integrative simulation of the pyroshock separation nut and the structure. The results provide a more exact input condition for the protection design of the spacecraft pyrotechnic environment. |
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| Keywords: | spacecraft pyroshock separation nut pyrotechnic environment protection FEA structure response numerical simulation prediction |
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