全钢载重子午线轮胎接地压力分布的仿真研究

Taking the 12R22. 5 truck and bus radial tire as an example，the finite element analysis model was established by using CAD，Tyabas and Abaqus software to study the effects of the cap arc angle，cross-sectional width and zero-degree belt expansion rate on the ground contact distribution of the tire. The results showed that，with the increase of the cap arc angle，the ground contact area of the tire and the rectangular coefficient of the ground contact pressure distribution shape increased，while the maximum ground contact pressure and average ground contact pressure decreased. With the increase of the cross-sectional width，the ground contact area of the tire and the rectangular coefficient of the ground contact pressure distribution shape first increased and then decreased，the maximum ground contact pressure decreased，and the average ground contact pressure first decreased and then increased. Adjustment of the expansion rate of the zero-degree belt layer could regulate the rigidity of its nearby parts，thereby affecting the shape of the ground contact footprint at this part.With the increase of the zero degree belt expansion rate，the rectangular coefficient of the ground contact pressure distribution shape of the tire changed little at first and then decreased，and the maximum ground contact pressure and average ground contact pressure changed little at first and then increased.