Study of the Interaction between Tracked Vehicle and Terrain

궤도차량과 토양의 상호작용에 대한 연구

  • Published : 2002.02.01

Abstract

The planar tracked vehicle model used in this investigation consists of two kinematically decoupled subsystems, i.e., the chassis subsystem and the track subsystem. The chassis subsystem includes the chassis frame, sprocket, idler and rollers, while the track subsystem is represented as a closed kinematic chain consisting of rigid links interconnected by revolute joints. In this study, the recursive kinematic and dynamic formulation of the tracked vehicle is used to find the vertical terce and the distance of an arbitrary track moved in the driving direction along the track. These distances and vertical forces obtained are used to get the deformation and sinkage of a terrain. The FEM(Finite Element Method) is adopted to analyze the interaction between tracked vehicle and terrain. The terrain is represented by a system of elements wish specified constitutive relationships and considered as a piecewise linear elastic, plastic and isotropic material. When the tracked vehicle is moving with different speeds on the terrain, the elastic and plastic deformations and the maximum sinkage for the four different types of isotropic soils are simulated.

References

  1. Schmid, I.C., 'Interaction of vehicle and terrain results from 10 years research of IKK,' Journal of Terramechanics, Vol. 32, No. 1, pp. 3-26, 1995 https://doi.org/10.1016/0022-4898(95)00005-L
  2. Garber, M. and Wong, J-Y, 'Prediction of ground pressure distribution under tracked vehicles-I. An analytical method for predicting ground pressure distribution,' Journal of Terramechanics, Vol. 18, No. 1, pp. 1-23, 1981 https://doi.org/10.1016/0022-4898(81)90015-X
  3. Garber, M. and Wong, J-Y., 'Prediction of ground pressure distribution under tracked vehicles-2. Effects of design parameters of the track-suspension system on ground pressure distribution,' Journal of Terramechanics, Vol. 18, No. 2, pp. 71-79, 1981 https://doi.org/10.1016/0022-4898(81)90001-X
  4. Hiroma, T., Wanjin, s., Kataoka, T. and Ota, Y, 'Stress analysis using FEM on stress distribution under a wheel considering friction with adhesion between an wheel and soil,' Journal of Terramechanics, Vol. 34, No. 4, pp. 225-233, 1997 https://doi.org/10.1016/S0022-4898(98)00002-0
  5. Molin, J-P., Leviticus, L-I., 'Performance and use of tracks in agriculture - a review,' Society of Automotive Engineers, 952131
  6. van Wyk, D. J. van, Spoelstra, J. and de Klerk, J. H. de, 'Mathematical modeling of the interaction between a tracked vehicle and the terrain,' Appl. Math. Modeling, Vol. 20, November, pp. 838-846, 1996 https://doi.org/10.1016/S0307-904X(96)00090-X
  7. Shabana, A. A., 'Computational Dynamics,' John Wiley & Sons, Inc., 1994
  8. Shin, J-H, 'Dynamic analysis of multibody tracked vehicles,' Master Thesis, Hanyang University, 1998
  9. KIMM, 'Mechanical Characteristics Test on the Track,' Report #BSI107-205, 1995
  10. Washizu, K., 'Variational Methods in Elasticity & Plasticity,' Pergamon Press, 1993
  11. Hinton, E. and Owen, D.R.J., 'Finite Element Programming,' Academic Press, 1977
  12. Owen, D.R.J., and Hinton, E., 'Finite Elements in Plasticity : Theory and Practice,' Pineridge Press Limited, 1980
  13. 우기형, '퍼스컴에 의한 토질-기초의 계산 예 해설,' 기술경영사, 1992
  14. Wong, J.Y., 'Theory of Ground Vehicles,' John Wiley & Sons. Inc., second edition, 1993