高压物理学报2012，Vol.26Issue(1)：7-17,11.
基于特征长度的非球形弹丸超高速撞击碎片云特性研究
Debris Cloud Characteristics of Non-Spherical Projectile Based on Characteristic Length
摘要
Abstract
The effects of non-spherical projectile shape on hypervelocity impact are investigated for the cube and flake projectiles,which are the typical shapes of orbital debris in ORDEM2000 and Standard Breakup Model （SBM）, by using AUTODYN-3D hydrocode simulations. The characteristics of the debris clouds produced by the hypervelocity impact based on the characteristic length of projectile are analyzed from their shape, mass, velocity and energy distributions, respectively, and are compared with the common used sphere projectile. The simulated results show that the shape and impact orientations of projectile have obvious influences on the debris cloud distribution, and moreover, the point impacts of the cube and flake have the maximum penetration capability, whereas the sphere is minimal. This means that the meteoroids and orbital debris impact risks of spacecrafts would be underestimated using the spherical projectile-based Ballistic Limit Curves （BLC）. The projectile shape effects based on the real characteristic length of orbital debris will make more reasonable corrections for the BLC.关键词
空间碎片/超高速撞击/碎片云/弹丸形状效应/数值仿真Key words
meteoroids and orbital debris/hypervelocity impact/debris cloud/projectile shape effect/numerical simulation分类
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徐坤博,龚自正,侯明强,郑建东,杨继运..基于特征长度的非球形弹丸超高速撞击碎片云特性研究[J].高压物理学报,2012,26(1):7-17,11.基金项目
国家重点基础研究发展计划（973计划） （）
国家国防科工局空间碎片专项 （）
