Study of Hypervelocity Breakup Phenomena for Arbitrary Material

目前已经进行了由特定简单目标组成的航天器或天体的超高速撞击试验，并需要更广泛和详细的研究来预测未来的空间碎片环境。我们开发了能够在GPGPU上运行的新的SPH和轨道计算程序。尤其是二次小碎片抛射现象日益严重，因此这项研究可以进一步加快对计算困难现象的研究。通过与实验结果的比较，发现这种现象与内部质量分布和撞击方向有很大的关系。

Hypervelocity impact tests have been conducted for spacecraft or celestial body composed of specific and simple target, and furthermore wider and detailed study is required for predicting future space debris environment. We developed new SPH and orbital computation code that are able to be run on GPGPU. Especially increasing secondary small debris called ejecta is becoming serious problem currently, hence this research enables to further accelerate investigation of the phenomena that have had difficulty in computation. Besides it is applicable for complex structure by comparing to experimental results, and it was found that the phenomena highly depends on internal distribution of mass and impact direction.