Dynamic Simulation on Belt of Bus and Truck Radial Tire

Taking 12.00R20bus and truck radial tire as the study object,and based on Abaqus software and composite pattern technology,the global model with complex pattern was established, and then based on submodel technology,the three dimensional fine grid model of the belt was established for finite element analysis.Under static load condition,the stress field calculated by global model and submodel was consistent and the maximum Mises stress appeared in the carcass ply.Under free rolling condition,the Mises stress of two belts was distributed very unevenly,but was basically symmetrical about neutral plane.The Mises stress of the second belt was higher than that of the first belt,and the Mises stress of the belt ply in tire crown was higher than that in sidewall.Under free rolling condition,the distribution of Mises stress of two belts in crown changed little comparing with that under static load condition,but the Mises stress increased in tire shoulder and decreased in sidewall, and the symmetrical distributions of Mises stress of two belts were opposite to each other.