China Mechanical Engineering ›› 2010, Vol. 21 ›› Issue (1): 6-12.

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Hybrid Dynamics of Flexible Multibody System and Real Time Simulation

Tian Fuyang1;Wu Hongtao1;Zhao Daxu1;Shao Bing1;Wang Chaoqun2;Zhu Jianying1
  

  1. 1.Nanjing University of Aeronautics and Astronautics,Najing, 210016
    2.Nanjing Agricultural University,Nanjing,210095

柔性多体系统混合递推动力学建模及实时仿真研究
 

田富洋1;吴洪涛1;赵大旭1;邵兵1;王超群2;朱剑英1
  

  1. 1.南京航空航天大学,南京,210016
    2.南京农业大学,南京,210095

Abstract:

The hybrid recursive dynamics based on the spatial operator algebra theory and real time simulation of a generalized flexible multibody was presented herein. The generalized flexible multibody was described according to the type of the joints (active or passive); then the generalized articulated inertia-matrix, the residual forces and the generalized acceleration and torque were computed through twice tip-to-base recursive and once base-to-tip recursive; at last the O(N) hybrid dynamics was gained. Next real time solver for the large differential-algebra equation was studied based on the linear multi-step method. Simulation results show that the dynamics modeling and fast integration techniques proposed here are very useful.

Key words: spatial operator;flexible multibody system;hybrid recursive, differential-algebra equation, real time simulation

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