This study analyzes the effect of soil deformation on ride dynamics of off-road vehicles using a quarter-vehicle model integrating different equivalent soil stiffness models. Soil deformation has an effect on the tire sinkage, wheels contact area and the wheels dynamic interaction with the terrain, which affects the overall ride dynamics of the vehicle. Apart from the very simplified equivalent soil stiffness model documented in the literature, a new equivalent soil stiffness model is developed in this study, which encompasses the effect of soil deformability on tire-soil contact area. Two measured ground roughness profiles are then used for vehicle ride dynamics simulation. The analytical and simulation results analyses demonstrated that the variations in tire-soil contact area due to soil deformability and tire sinkage should be modeled for ride dynamics analyses, and soil deformability tends to reduce the vehicle body bounce acceleration and dynamic tire-soil interacting force with a compromise on suspension travel. Parametric studies further demonstrated the potential of optimal tire/suspension settings.
Effect of Soil Deformability on Off-Road Vehicle Ride Dynamics
Sae Int. J. Commer. Veh
SAE 2013 Commercial Vehicle Engineering Congress ; 2013
Sae International Journal of Commercial Vehicles ; 6 , 2 ; 362-371
24.09.2013
10 pages
Aufsatz (Konferenz)
Englisch
Effect of Soil Deformability on Off-Road Vehicle Ride Dynamics
British Library Conference Proceedings | 2013
|Road Profile, Vehicle Dynamics, and Ride Quality Rating
Online Contents | 1999
|Road Profile, Vehicle Dynamics, and Ride Quality Rating
British Library Online Contents | 1999
|Ride Dynamics of Road Vehicles
British Library Conference Proceedings | 1992
|Off-road vehicle ride vibration
Kraftfahrwesen | 1984
|