航天器环境工程Issue(6)：581-585,5.DOI:10.3969/j.issn.1673-1379.2013.06.003
Al/Mg阻抗梯度材料超高速撞击机理数值仿真研究
Numerical study on hypervelocity impact mechanism of Al/Mg wave impedance-grade material
摘要
Abstract
The propagation of shock wave in Al/Mg wave impedance-grade material target is studied by numerical simulations. The duration of the shock wave in the target, the plastic work and the internal energy converted from the kinetic energy of the projectile are obtained. It is indicated that the integrals of the pressure over time in the wave impedance-grade material target are increased by 30%~50%as compared with those in the aluminum alloy target at the velocity range of 3.0~7.0 km/s. Meanwhile, the plastic work and the internal energy rise by 10%when the aluminum target is replaced by the Al/Mg wave impedance-grade material target under the same impact conditions. All results support the conclusion that the wave impedance-grade target performs better than the aluminum alloy target in protection against hypervelocity projectiles.关键词
阻抗梯度材料/空间碎片/超高速撞击/防护机理/数值仿真Key words
wave impedance-grade material/space debris/hypervelocity impact/protection mechanism/numerical simulation分类
数理科学引用本文复制引用
侯明强,龚自正,徐坤博,郑建东,曹燕,牛锦超..Al/Mg阻抗梯度材料超高速撞击机理数值仿真研究[J].航天器环境工程,2013,(6):581-585,5.基金项目
国家重点基础研究发展计划（项目编号2010CB731600）；国家国防科工局空间碎片专项 （）
