Abstract
Keywords: Rollover, Off-road vehicle, Suspension, Tire, Soil
The objective of this paper is to develop a new model of un-tripped rollover in off-road vehicles which is not very well understood yet. Furthermore, a new approach is presented to show the rollover phenomenon in this kind of vehicle. In addition, in contrast with other performed works, the rollover is assumed in a transient mode between tripped and un-tripped rollover where the effect of soil compaction is considered. Taking into account that the soil under load is an easily deformable pattern, we can define two conditions for it; sinkage and compaction. Consequently, consider the changing of the loads on wheels, the tires will sinkage through the soil and as a result there would be the compaction of soil behind the outside tires which may cause to rollover incident. A Mini Baja, which is a light off-road vehicle and is categorized in buggies, was used for all tests and simulation.