Measurement of the Properties of Agricultural Tire for Tractor Dynamic Analyses (Part 1) - Determination of Drive Tire Stiffness and Damping from Static Tests

摘要

Properties of a nonrolling 8.3R/24 radial agricultural drive tire were measured for combinations of three inflation pressures and five vertical loads. The stiffness and damping properties in longitudinal and lateral directions were determined experimentally from static force-displacement relations using a cable-suspended plate pressed against the tire periphery. The results indicated that generally, the longitudinal spring constants increased with increasing vertical load but decreased with increasing tire pressure, while the lateral spring constants were insensitive to tire vertical load and increased significantly with tire pressure. No consistent trends in the variations of both the longitudinal and lateral damping coefficients were observed with increasing vertical load and tire pressure.