Partitioning method using kinematic uncoupling in train dynamics

열차 동역학에서 기구학적 비연성을 이용한 분할 해석 방법

  • 박정훈 (KIST 트라이볼로지 연구센터) ;
  • 유홍희 (한양대학교 기계공학부) ;
  • 황요하 (KIST 트라이볼로지 연구센터) ;
  • 김창호 (KIST 트라이볼로지 연구센터)
  • Published : 1999.03.01


In this paper, an efficient and accurate formulation for the transient analysis of constrained multibody systems is presented. The formulation employs Kane's method along with the null space method. Kane's method reduces the dimension of equations of motion by using partial velocity matrix: it can improve the efficiency of the formulation. Furthermore, the formulation partitions the coefficient matrix of linear and nonlinear equations into several sub-matrices using kinematic uncoupling. This can solve the equations more efficiently. The proposed formulation can be used to perform dynamic analysis of systems which can be partitioned into several sub-systems such as train systems. One numerical example is given to demonstrate the efficiency and accuracy of the formulation, and another numerical example is given to show its application to the train systems.