A two-dimensional discrete mass tire model has been developed at the Advanced Vehicle Dynamics Laboratory (AVDL) at Virginia Tech to study the behavior of a tire during a transient regime such as when traversing over uneven rigid terrain (or obstacles). The accuracy of the tire model depends on the model parameters used. In this paper, the method for parameter identification using the Performance Engineering Research Laboratory (PERL) quarter car tire test rig is presented. Moreover, several experiments were conducted by using the portable tire test rig from the Intelligent Transportation Laboratory (ITL) for the tire model validation. Simulation results obtained using the tire model developed and experimental results from the parameter identification and the field tests with the portable tire test rig are presented in this paper. The simulation results show good agreement with the experimental data from tests over rectangular and triangular profile cleats, at various vehicle velocities and normal loads.

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