Whipple防护结构高速区弹道极限数值模拟研究

doi:10.16182/j.issn1004731x.joss.19-0078

系统仿真学报 ›› 2020, Vol. 32 ›› Issue (9): 1705-1710.doi: 10.16182/j.issn1004731x.joss.19-0078

Whipple防护结构高速区弹道极限数值模拟研究

李依潇, 王生捷

北京机械设备研究所,北京 100854

收稿日期:2019-02-28 修回日期:2019-04-07 出版日期:2020-09-18 发布日期:2020-09-18
作者简介:李依潇(1990-),男,北京,博士,研究方向为冲击动力学;王生捷(1963-),男,安徽,博士,研究员,研究方向为飞行器设计。

Numerical Research on Ballistic Limit of Whipple Shield in High-Velocity Range

Li Yixiao, Wang Shengjie

Beijing Institute of Mechanical Equipment, Beijing 100854, China

Received:2019-02-28 Revised:2019-04-07 Online:2020-09-18 Published:2020-09-18

摘要/Abstract

摘要： 受二级轻气炮发射速度的限制,在以往研究中极少进行弹体速度大于8 km/s的Whipple防护结构撞击试验,导致建立高速区弹道极限方程所依据的实验数据并不能完全反映Whipple防护结构在高速区的防护能力。通过将GRAY三相物态方程代入自编物质点法计算程序,对厚靶侵彻、Whipple防护结构高速区撞击等工况进行数值模拟,得到Whipple防护结构在高速区的弹道极限,仿真结果表明其高速区防护能力高于弹道极限方程的预测,对航天器防护结构的设计具有参考价值。

关键词: 超高速碰撞, 物质点法, 弹道极限, Whipple防护结构

Abstract: Limited by the acceleration ability of two-stage light gas guns, few hypervelocity impact experiment of Whipple shield with projectile speed higher than 8 km/s has been performed. The ballistic limit equations can't fully describe the protection ability of Whipple shield in high-velocity range because of the lack of experimental data. GRAY three-phase equation of state is used in the material point method calculation program to simulate the penetration of thick target plate and the high-velocity impact of Whipple shield. The numerical result of Whipple shield ballistic limit shows that the ballistic limit in high-velocity range is higher than the forecasting of traditional ballistic limit equations. This result is valuable for the design of spacecraft protection structure.

Key words: hypervelocity impact, material point method, ballistic limit, whipple shield

中图分类号:

O385

李依潇, 王生捷. Whipple防护结构高速区弹道极限数值模拟研究[J]. 系统仿真学报, 2020, 32(9): 1705-1710.

Li Yixiao, Wang Shengjie. Numerical Research on Ballistic Limit of Whipple Shield in High-Velocity Range[J]. Journal of System Simulation, 2020, 32(9): 1705-1710.

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Whipple防护结构高速区弹道极限数值模拟研究

Numerical Research on Ballistic Limit of Whipple Shield in High-Velocity Range

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