摘要
目前解决多柔体动力学问题主要是依赖于数值的、定量的分析方法,几乎没有人进行解析的分析讨论,这对于深刻把握系统的非线性力学实质、预测系统的全局动力学现象是十分不利的,因此,极有必要开展多柔体系统的理论分析.作为多柔体动力学理论分析的组成部分,该文研究航天器动力学中的一个理论问题,探讨了"为了进行具体分析,经常把矢量(矢量是一阶张量)方程投影到合适的动坐标系上"的法则的合理性.该文的理论分析的结果,不仅表明进行多柔体系统理论分析的必要性,而且为多柔体系统的合理建模提供了参考.
Recent study to solve the problems of flexible multi-body dynamics mainly depends on the numerical, quantitative methods and almost no one involves in the analytical discussion. It is unfavorable to understand profoundly the essence of nonlinear mechanics of the system and to predict the feature of overall dynamics of system. Therefore, it is the need to study theoretical analysis of flexible multi-body system. The research of this paper carries out to adapt this need. The theoretical problem is discussed which is coming with the projection of the vector equations in a suitable moving coordinate system. Then some important results are obtained. The important results show that not only the theoretical analysis of flexible multi-body system has been necessary, but also it has provided reference for the modeling of flexible multi-body system.
出处
《中国科学：物理学、力学、天文学》
CSCD
北大核心
2011年第1期94-101,共8页
Scientia Sinica Physica,Mechanica & Astronomica
基金
国家自然科学基金(批准号:10272034)
博士学科点专项科研基金(编号:20060217020)
中央高校基本科研业务费专项资金(编号:HEUCF100205)资助项目
关键词
航天器
柔体
刚体
动力学
建模
spacecraft
flexible-body
rigid-body
dynamics
modeling
