计算物理 ›› 1997, Vol. 14 ›› Issue (1): 35-39.

• 论文 • 上一篇    下一篇

树形多体Hamilton系统辛算法

王琪, 黄克累, 陆启韶   

  1. 北京航空航天大学应用数理系, 北京 100083
  • 收稿日期:1995-07-18 修回日期:1996-08-17 出版日期:1997-01-25 发布日期:1997-01-25
  • 基金资助:
    国家自然科学基金,航空科学基金,国家教委博士点基金

SYMPLECTIC ALGORITHM FOR HAMILTON MULTIBODY SYSTEM

Wang Qi, Huang Kelei, Lu Qishao   

  1. Beijing University of Aeronautics and Astronautics, 100083
  • Received:1995-07-18 Revised:1996-08-17 Online:1997-01-25 Published:1997-01-25

摘要: 研究了树形多体Hamilton系统的隐式辛算法。用矩阵形式给出了系统的正则方程及其右端函数的Jacobi矩阵,并给出该矩阵的分块算法,可提高计算效率.隐式辛Runge-Kuta算法被采用,数值结果表明给出的算法计算效率高,并可保持长期数值计算的稳定性。

关键词: 多体系统, 正则方程, 辛算法

Abstract: The implicit symplectic algorithm of Hamilton multibody system with topological tree configuration is studied. The canonical equations of multibody system and Jacobian matrix of RHS of the equations are obtained in the form of matrix.The paper presents algorithm of Jacobian matrix to raise computational efficiency. The implicit symplectic Runge Kutta algorithm is used in solving the canonical equations of multibody system. Numerical results show that the algorithm has higher computational efficiency and can keep computation stable for long time simulation.

Key words: multibody system, canonical equation, symplectic algorithm

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