碎石堆小行星的散体动力学建模与仿真方法综述

张韵; 李俊峰

doi:10.6052/0459-1879-14-329

碎石堆小行星的散体动力学建模与仿真方法综述

doi: 10.6052/0459-1879-14-329

张韵,
李俊峰

清华大学航天航空学院, 北京 100084

基金项目: 高等学校博士学科点专项科研基金资助项目(20120002110078).

详细信息

作者简介:
李俊峰,教授,主要研究方向:航天动力学与控制.E-mail: lijunf@tsinghua.edu.cn

中图分类号: V419.9
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- 被引次数: 0
出版历程
- 收稿日期: 2014-10-23
- 修回日期: 2014-11-08
- 刊出日期: 2015-01-18

A SURVEY OF GRANULAR DYNAMICS MODELING AND SIMULATION METHODS FOR RUBBLE-PILE ASTEROIDS

School of Aerospace Engineering, Tsinghua University, Beijing 100084, China

Funds: The project was supported by the Specialized Research Fund for the Doctoral Program of Higher Education (20120002110078).

摘要

摘要: 探测小行星将是未来几十年内航天界的研究热点. 现有资料表明小行星多为疏松多孔的碎石堆结构,易受探测活动的影响而破碎瓦解,因此对其探测必须先进行动力学建模,研究探测活动与小行星结构的相互作用,确保探测任务顺利执行. 在中国即将开展小行星探测任务的背景下,调研分析了散体动力学的研究和发展情况;并根据国内外的相关研究,对目前碎石堆小行星动力学模型与数值模拟方法的研究进行了综述;最后,结合小行星探测的应用背景,总结了小行星散体动力学模型中需解决的关键问题.
- 小行星探测 /
- 散体动力学 /
- N体问题 /
- 碎石堆结构
Abstract: Asteroid exploration will be the spotlight of the research in aerospace science in upcoming decade. The present data indicates that most of the asteroids are loosely consolidated "rubble pile" structures, which have zero tensile strength and are easy to be disrupted by external force produced by exploration missions. Therefore, to guarantee the execution of the asteroid exploration mission, it is essential to build the dynamics model of the asteroid and explore the asteroid evolution's interaction effect. Based on the upcoming China's asteroid exploration mission, the research status and development of granular dynamics is reviewed and analyzed. Then, the dynamical modeling and numerical simulation methods of rubble-pile asteroids are recapitulated in detail, according to the state of art of international relating researches. Finally, the key technical problems of the modeling of rubble-pile asteroids in asteroid exploration mission are proposed.
- asteroid exploration /
- granular dynamics /
- N-body simulation /
- rubble-pile structure

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