This research focuses on predicting the in-plane and out-of-plane rigid ring model parameters of an off-road truck tire running over a flooded surface. The rigid ring tire model parameters include the longitudinal stiffens, vertical stiffness, lateral stiffness, cornering stiffness, self-aligning moment stiffness, and relaxation length. The rigid ring model parameters are computed at different operating conditions, the effect of the previously mentioned operating conditions on the tire-flooded surface interaction is examined and investigated.
This research presents a novel modeling technique to compute the interaction between an 8x4 off-road truck and gravelly (sand mixed with gravel) soil. The truck tires-gravel interaction is computed and validated against physical measurements performed in Goteborg, Sweden.
This research focuses on predicting and analyzing the tire-moist terrain interaction. The moist terrain (sand) is modelled using Smoothed-Particle Hydrodynamics (SPH) technique. The SPH basic interpolation technique is described, and the necessary interpolation equations are implemented. The soil is modelled using the hydrodynamic elastic-plastic material, while the water is modelled using Murnaghan equation of state. The numerical interaction between both materials is defined using Darcy’s law.
The hydroplaning phenomenon is a complex multi-physics problem that may affect any vehicle under wet road conditions. It is crucial to understand the hydroplaning phenomenon to improve passenger safety on highways. This research focuses on studying the hydroplaning of different truck
tires.
This research focuses on modeling and validation of an agricultural tire size 220/80-B16 over a clayey loam terrain. The tire is modeled using a Finite Element Analysis (FEA) technique and validated against experimental measurements in static and dynamic responses. The clayey loam is modeled using Smoothed-Particle Hydrodynamics (SPH) technique and calibrated against experimental terramechanics’ measurements.
The full vehicle model is a Matlab/Simulink code that is used to predict the full vehicle motions on-road and off-road during different maneuvers. In the full vehicle model the tires are modeled as the rigid ring and utilize in-plane and out-of-plane rigid ring model parameters obtained in previous research.