| 等质量异形粒子超高速撞击侵蚀 |
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| 引用本文： | 庄峰青,刘大有.等质量异形粒子超高速撞击侵蚀[J].空气动力学学报,1997,15(2):216-219. |
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| 作者姓名： | 庄峰青 刘大有 |
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| 作者单位： | 中国科学院力学研究所!北京，100080，中国科学院力学研究所!北京，100080 |
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| 摘 要： | 用数值方法模拟双锥，圆柱，椭球、圆锥和倒圆锥五类等质量异形铝粒子五种高宽比共２５种粒子对半无限铝靶的超高速撞击侵蚀，撞击速度为４ｋｍ／ｓ，给出了坑深、坑径、坑形参数和坑体积随粒子形状及高宽比的变化曲线。结果与非圆球异形粒子超高速撞击侵蚀计算有重要参考价值。
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| 关 键 词： | 超高速撞击 侵蚀 粒子云 飞行器 再入大气层 |
Hypervelocity-Impact Erosion of Equal-Mass Particles with Various Shapes |
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| Zhuang Fengqing, Liu Dayou.Hypervelocity-Impact Erosion of Equal-Mass Particles with Various Shapes[J].Acta Aerodynamica Sinica,1997,15(2):216-219. |
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| Authors: | Zhuang Fengqing Liu Dayou |
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| Abstract: | The erosion caused by hypervelocity impact into scmi-infin-ite targets is studied numerically of twenty five equal-mass particles with various shapes, which fall into five kinds(bi-cone, cylinder, ellipsoid, cone and upside-down cone) with five aspect ratios(0. 25, 0. 50, 1, 2, 4) .The particles and targets are of the same material aluminium. The impact velocity is 4km/s.variations of crater depth, crater radius, crater depth-radius-ratio and crater volume are shown was fullctions of particle aspect ratio.The results presented in the paper are of great importance for the predictions of hypervelocity impact erosion caused by non-spherical particles. |
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| Keywords: | hypervelocity impact erosion numerical simulation particle cloud elastoplastic fluid |
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