Technical Paper
Analysis of Wheel-Soil Interaction under Combined Slip Condition
2008-04-14
2008-01-0779
The understanding of wheel-soil interaction under longitudinal and lateral slip conditions is very important for off-road vehicle dynamics. However, understanding the physics of wheel-soil interaction is not easy, especially with uncertain operational environment and with the limitation of current measuring technique and hardware. This paper explores important aspects of off-road vehicle mobility using as a case study a 7 degree of freedom (DOF) vehicle model under steady-state cornering. In the evaluation of the vehicle response over a two-dimensional (2-D) terrain profile the load transfer due to cornering was taken into account. The tractive and the cornering vehicle capabilities were predicted using an algorithm that chooses the appropriate tire model (rigid or flexible) and finds the optimal geometry of the contact patch.