| 超高速撞击波阻抗梯度材料形成的碎片云相变特性 |
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| 引用本文： | 郑克勤,张庆明,龙仁荣,薛一江,龚自正,武强,张品亮,宋光明. 超高速撞击波阻抗梯度材料形成的碎片云相变特性[J]. 兵工学报, 2021, 42(4): 773-780. DOI: 10.3969/j.issn.1000-1093.2021.04.011 |
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| 作者姓名： | 郑克勤 张庆明 龙仁荣 薛一江 龚自正 武强 张品亮 宋光明 |
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| 作者单位： | （1.北京理工大学 爆炸科学与技术国家重点实验室， 北京 100081； 2.北京卫星环境工程研究所， 北京 100094） |
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| 基金项目： | 国家重点研发计划项目（2016YFC0801204）；民用航天预先研究项目（D020304） |
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| 摘 要： | 在超高速碰撞下,波阻抗梯度材料能使弹丸的动能更多地转变为靶板材料内能,使其发生熔化、气化等相变,分散和消耗弹丸的动能,进而实现航天器对空间碎片的防护.以钛、铝、镁3种材料组成的波阻抗梯度材料为研究对象,借助于光滑粒子流体动力学数值模拟方法,采用Til-loston状态方程和Steinberg-Guinan本构模型,给出...
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| 关 键 词： | 超高速撞击 波阻抗梯度材料 碎片云 相变 |
Phase Transition Characteristics of Debris Cloud of Ti/Al/Mg Wave Impedance Gradient Material Subjected to Hypervelocity Impact |
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| ZHENG Keqin,ZHANG Qingming,LONG Renrong,XUE Yijiang,GONG Zizheng,WU Qiang,ZHANG Pinliang,SONG Guangming. Phase Transition Characteristics of Debris Cloud of Ti/Al/Mg Wave Impedance Gradient Material Subjected to Hypervelocity Impact[J]. Acta Armamentarii, 2021, 42(4): 773-780. DOI: 10.3969/j.issn.1000-1093.2021.04.011 |
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| Authors: | ZHENG Keqin ZHANG Qingming LONG Renrong XUE Yijiang GONG Zizheng WU Qiang ZHANG Pinliang SONG Guangming |
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| Affiliation: | (1.State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, China;2.Beijing Institute of Spacecraft Environmental Engineering, Beijing 100094, China) |
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| Abstract: | In hypervelocity impact, the wave impedance gradient material helps to transfer the kinetic energy into more internal energy, which causes the melting and vapor phase transition of debris cloud, and disperses and dissipates the kinetic energy of projectile, thus protecting the spacecraft from debris cloud. The wave impedance gradient material studied in this paper is made of titanium, aluminium and magnesium alloy（TAM）. The smoothed particle hydrodynamics (SPH) method is used to simulate hypervelocity impact. Impact-induced phase transition criteria of various materials are given by using Tilloston equation of state and Steinberg-Guinan constitutive model. The simulated results were compared with the experimental results with impact velocity of 7.9 km/s. The results show that the impact-generated debris cloud is melted and vaporized to some extent when TAM wave impedance gradient material is impacted by the velocity more than 4 km/s. For Ti, Al and Mg, the debris cloud is melted at the impact velocities of 6 km/s, 5 km/s and 4 km/s, respectively, and it is vaporized at the impact velocities of 8 km/s, 9 km/s and 6 km/s. |
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| Keywords: | hypervelocityimpact waveimpedancegradientmaterial debriscloud phasetransition |
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