Numerical simulations of hypervelocity impacts to defend against small bodies

被引：0
|
作者：
Jiao Y. [1 ]
Cheng B. [1 ]
Chen S. [2 ]
Baoyin H. [1 ,3 ]
机构：
[1] School of Aerospace Engineering, Tsinghua University, Beijing
[2] China Academy of Space Technology, Beijing
[3] College of Science, Inner Mongolia University of Technology, Hohhot
来源：
Zhongguo Kexue Jishu Kexue/Scientia Sinica Technologica | 2023年 / 53卷 / 12期
关键词：
hypervelocity impact; planetary defense; small bodies; smoothed particle hydrodynamics;
D O I：
10.1360/SST-2022-0274
中图分类号：
学科分类号：
摘要：
Millions of small bodies have been observed in the solar system, with frequent and violent collisions during their formations and evolutions. Small bodies entering the earth’s neighborhood are recognized as Near Earth Objects, which are likely to impact the earth and cause disaster to humans. A kinetic impactor could be one of the most effective and feasible solutions to defend against such threats. Therefore, understanding the hypervelocity impacts on small bodies is of great importance. In this paper, a new hydrocode THU-SPHSOL has been developed, based on the Smoothed Particle Hydrodynamics method. With numerical simulations, the effects of material properties and structures on asteroid disruptions have been investigated, as well as the ejecta distribution from a cratering impact. The results should provide guidance for the future asteroid defense mission of China. © 2023 Chinese Academy of Sciences. All rights reserved.
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页码：2039 / 2052
页数：13
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