A Numerical Method for Dynamic Analysis of Tracked Vehicles of High Mobility

  • Lee, Ki-Su (Department of Mechanical Engineering, Chonbuk National University)
  • 발행 : 2000.10.01

초록

A numerical method is presented for the dynamic analysis of military tracked vehicles of high mobility. To compute the impulsive dynamic contact forces which occur when a vehicle passes on a ground obstacle, the track is modeled as the combination of elastic links interconected by pin joints. The mass of each track link, the elastic elongation of a track link between pin joints by the track tension, and the elastic spring effects on the upper and lower surfaces of each track link have been considered in the equations of motion. And the chassis, torsion bar arms, and road wheels of the vehicle are modeled as the rigid multi bodies connected with kinematic constraints. The contact positions and the contact forces between the road wheels and track, and the ground and the the track are simultaneously computed with the solution of the equations of motions of the vehicle consisting of the multibodies. The iterative scheme for the solution of the multi body dynamics of the tracked vehicle is presented and the numerical simulations are conducted.

키워드

참고문헌

  1. Addison, C. A., Enright, W. H., Gaffney, P. W., Gladwell, I., and Hanson, P. M., 1991, 'Algorithm 687-A Decision Tree for the Numerical Solution of Initial Value Ordinary Differential Equations,' ACM Transactions of Mathematical Software, Vol. 17, pp. 1-10 https://doi.org/10.1145/103147.103148
  2. Cash, J. R. and Karp, A. H., 1990, 'A Variable Order Runge-Kutta Method for Initial Value Problems with Rapidly Varying Right-Hand Sides,' ACM Transactions on Mathemaical Software, Vol. 16, pp. 201-222 https://doi.org/10.1145/79505.79507
  3. Garcia de Jalon, J. and Bayo, E., 1994, Kinematic and Dynamic Simulation of Multibody Systems, Springer-verlag, New York
  4. Hairer, E., Norsett, S. P., and Wanner, G., 1987, Solving Ordinary Differential Equations 1, Springer-verlag, Berlin Heidelberg
  5. Lee, K., 1993, 'An Accelerated Iterative Method for the Dynamics of Constrained Multibody Systems,' Computational Mechanics, Vol. 12., pp. 27-38 https://doi.org/10.1007/BF00370483
  6. Lee, K., 1997, 'A Numerical Method for Dynamic Analysis of Vehicles Moving on Flexible Structures Having Gaps,' International Journal for Numerical Methods in Engineering, 40, pp. 511-531 https://doi.org/10.1002/(SICI)1097-0207(19970215)40:3<511::AID-NME77>3.0.CO;2-6
  7. Lee, K., 1989, 'An Accelerated Iterative Method for Contact Analysis,' International Journal for Numerical Methods Engineering, 28, pp. 279-293 https://doi.org/10.1002/nme.1620280204
  8. McCullough, M. K. and Haug, E. J., 1986, 'Dynamics of High Mobility Track Vehicles,' ASME J. Mechanisms Transmissions, and Automation in Design, Vol. 108, pp. 189-196
  9. Nakanishi, T. and Shabana, A. A., 1994, 'Contact Forces in the Non-linear Dynamic Analysis of Tracked Vehicles,' International Journal for Numerical Methods Engineering, Vol. 37, pp. 1251-1275 https://doi.org/10.1002/nme.1620370802
  10. Vu-Quoc, L. and Olsson, M., 1989, 'A Conputational Procedure for Intercation of High-Speed Vehicles on Flexible Structures Without Assuming Known Vehicle Nominal Motion,' 'Computer Methods in Applied Mechanics and Engineering, Vol. 76, pp. 207-244 https://doi.org/10.1016/0045-7825(89)90058-3
  11. Vu-Quoc, L. and Olsson, M., 1989, Formulation of a Basic Building Block Model for Interaction of High-Speed Vehicles on Flexible Structures,' ASME Journal of the Applied Mechanics, Vol. 56, pp. 451-458