| 球形弹丸高速撞击航天器防护结构的数值模拟分析 |
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| 引用本文： | 陈朗,伍俊英,冯长根,龚自正.球形弹丸高速撞击航天器防护结构的数值模拟分析[J].宇航学报,2003,24(6):625-628. |
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| 作者姓名： | 陈朗 伍俊英 冯长根 龚自正 |
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| 作者单位： | 1. 北京理工大学爆炸灾害预防与控制国家重点实验室,北京,100081
2. 西南交通大学物理研究所,成都,610031 |
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| 摘 要： | 给出了空间碎片超高速撞击航天器双层防护结构模型，采用非线性有限元方法中的光滑粒子流体动力算法，计算了球形弹丸对航天器双层防护墙结构超高速撞击过程，获得了弹丸穿过第一层防护墙后，碎裂形成颗粒云团及其对第二层防护墙的损伤效应。计算结果表明多层防护墙结构能够有效地缓减高速空间碎片对航天器的破坏作用。
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| 关 键 词： | 空间碎片 超高速碰撞 数值模拟 |
| 文章编号： | 1000-1328(2003)06-0625-04 |
| 修稿时间： | 2002年11月4日 |
The numerical simulation of spherical projectile impacting spacecrafts protecting structures at hypervelocity |
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| CHEN Lang,WU Jun-ying,FENG Chang-gen,GONG Zi-zheng.The numerical simulation of spherical projectile impacting spacecrafts protecting structures at hypervelocity[J].Journal of Astronautics,2003,24(6):625-628. |
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| Authors: | CHEN Lang WU Jun-ying FENG Chang-gen GONG Zi-zheng |
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| Institution: | CHEN Lang~1,WU Jun-ying~1,FENG Chang-gen~1,GONG Zi-zheng~2 |
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| Abstract: | The model of the space debris impacting the spacecraft dual-wall structure at hypervelocity was given.The impacting process was calculated by used the smooth particle hydrodynamics algorithm of the nonlinear finite element code.The debris cloud formed by the projectile penetrating through the first bumper was presented.The second bumper damages caused by the debris cloud were analyzed.The calculation results show multi-wall structure can relieve the damages of spacecraft caused by the space debris impacting. |
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| Keywords: | Space debris Hypervelocity impact Numerical simulation |
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