Finite Element Analysis of Stress Distribution Characteristics of Vehicle Retreaded Tire Composite Layer

Abstract In order to further reveal the failure and damage mechanism of retreaded tires in use, such as tread delamination and pressure burst, we constructed a retreaded tire material distribution model, a stress constraint model for each layer, and a finite element model. Stress distribution characteristics of the tread, breaker, belt, carcass, sidewall, toe rubber, etc. under free condition and static grounding condition were analyzed by numerical simulation, and the following main conclusions were obtained: Under the free-inflation condition, the tire carcass of the retreaded tire is subjected to the most stress, the belt is next to it, the breaker and the tread are the least, and the stress on the tread and tire shoulder is relatively great. Under the static grounding condition, the belt of the retreaded tire of a vehicle is subjected to the most stress, the carcass next to it, the stress distributions of the belt and the carcass are similar, and the stress on the tread and the breaker is relatively small.