空间碎片超高速撞击压力容器碎片云特性数值模拟研究

盖芳芳; 庞宝君; 管公顺

doi:10.11858/gywlxb.2009.03.010

空间碎片超高速撞击压力容器碎片云特性数值模拟研究

doi: 10.11858/gywlxb.2009.03.010

哈尔滨工业大学空间碎片高速撞击研究中心，黑龙江哈尔滨 150080

详细信息

通讯作者:
盖芳芳

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出版历程
- 收稿日期: 2008-08-09
- 修回日期: 2008-12-03
- 刊出日期: 2009-06-15

Numerical Investigation on the Characteristics of Debris Clouds Produced by Hypervelocity Impact on Pressure Vessels

Hypervelocity Impact Research Center, HIT Aerospace Laboratory, Harbin 150080, China

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Corresponding author: GAI Fang-Fang

摘要

摘要: 针对空间碎片超高速撞击充气压力容器问题，应用非线性动力学分析软件AUTODYN-2D，采用SPH方法对碎片云在高压气体中的运动特性进行了数值模拟研究。在建模过程中，分析比较了材料状态方程对数值模拟结果的影响，并通过与实验结果的比较，选取了适合该问题的状态方程，验证了数值模拟方法的有效性。结果表明：由于容器内压气体的存在，碎片云运动发生减速，并且碎片云的轴向扩展速度相对于碎片云的径向扩展速度减速较慢；高速撞击产生的碎片云与容器内的高压气体发生了强烈的相互作用，碎片云尖端产生的钉状物及高压气体中产生的冲击波是控制容器在撞击后发生进一步破坏的两个重要因素。
- 空间碎片 /
- 高速撞击 /
- 压力容器 /
- 数值模拟 /
- 碎片云
Abstract: SPH methods in AUTODYN-2D was used to investigate the characteristics of debris clouds propagation inside the gas-filled pressure vessels for hypervelocity impact on the pressure vessels. The effect of equation of state on debris cloud was examined. A better correlation between experimental and numerical results was obtained. The result shows a strong interaction between cloud debris and pressurized gas. The pressurized gas in vessel reduces strongly the radial and axial velocity of the debris cloud. Spike of the debris clouds and shock wave are shown to be important factors governing the damage of pressure vessel.
- space debris /
- hypervelocity impact /
- pressure vessels /
- numerical simulation /
- debris clouds

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参考文献(23)

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