Tire-Terrain Research

 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 purpose of this research is to identify the important characteristics of the Non-Pneumatic tire by relating the structural stiffness of the wheel to the contact conditions. Based on experimental and published data, the Non-Pneumatic tire model will be validated under different conditions. A successful outcome of this research would increase the efficiency of tire design while providing a better understanding of Non-Pneumatic tire behavior under different contact conditions.

The physical characteristics of Mars's soil have an impact on how easily a spacecraft can land and navigate the planet's surface. On the surface of Mars, wheeled robots known as "rovers" were planted to carry out scientific investigations on the planet's historical temperature, surface

geology, and possibilities for past or current life.