Optimization Of Tire Contact Features On Tire Wear Under Complex Conditions

Tire is the only member of the vehicle when contact with the ground,the tire-ground contact is the only interface where tire wear happens,the contact features not only affect tire wear severely,but also safety,comfort and handling stability of vehicle.There have less work on tire wear considering contact features.The tire structure was simplified to build the tire physical model that the tire belt which bears most deformation is represented by the elastic thin torus,combined with tire brush model built tire wear model.The experimental were carried out for obtaining and fitting the relationship between load,velocity and slip ratio under various conditions,simulate and calculate tire contact features and wear on each conditions.According to the probability come up in 9 kinds of working conditions,using weighted summation method to predict tire the total amount of wear.Based on the established tire model,building the mathematical relationship between structural parameters of tire and tire contact features and wear,use length of tire contact patch,tire contact pressure asymmetry index and tire rolling resistance moment to representation of contact features.Aim to reduce the amount of wear,using particle swarm optimization algorithm to optimize the physics structure parameters of tire and obtaining the contact features as the minimum amount of wear.In this paper,the tire wear model was built combined with the contact model and tire brush model.The influence of contact features on tire wear were investigated.The results are helpful to explore the relationship between tire physical parameters,contact features and tire wear.The methodology can be provided to investigate the tire wear by contact features of tire.Furthermore,the new guidelines can be provided to reducing wear based on contact features angle.