The Study Of Tire Wear Properties Base On FEM

Tires are the only parts of the car which is in contact with the road. The indicators of thetire will have a significant impact to the overall performance of the car. Wear performance asan important indicator to evaluate tire performance, seriously restrict the life of the tire. Ruleson tire wear performance test, where it happens on specified itinerary and the total tire wearamount must be measured simultaneously, have been made by many countries. However, theroad test is expensive and time consuming. In recent years, indoor tire wear test has beendeveloped. Although it can shorten the test time greatly, a special test equipment must bebought, what’s more, it is also affected by the outdoor test. Thus it will go against with therapid development of the tire industry.This paper refers to the method proposed by Cho J.R., et al. The205/55R16radial tire ischosen as the research object, and the finite element models of3kinds of different tire treadstructure are described. The appropriate finite element models for tire wear are thenestablished in ABAQUS. In the finite element models,9conditions will be considered in theform of loads. With ABAQUS explicit analytical methods, each tire will be simulated to roll arevolution under each condition.Then, the relationship between tire wear and the friction dissipation of grounding area isdeduced. Under different rolling conditions, tire friction power loss of grounding area on eachlap of9type tires was calculated through the programming. According to the incidence of the9kinds of working conditions under the specific mileage of the car, the equivalent wearamount per revolution on actual pavement is calculated. It is multiplied by the number of tirerevolutions of the specific mileage. The simulation results of total tire wear of each style areobtained. Since the simulation results of relative wear loss value and the total tire wearamount under different condition are in line with expectations, thus this tire wear analysisbased on FEM is proved effectively preliminary.According to the secondary development interface in ABAQUS, the visualization of tirewear simulation results have been researched further. Some new field variables have been added to output databases. In the ABAQUS Scripting Interface, the tire frictional energy lossrate distribution in the contact patch has been displayed by using the Python programminglanguage. In the User Subrouting Interface, the nodes slip velocity have been visualizated byusing the Fortran programming language. Since the visualization of frictional energy loss ratedistribution and nodes slip velocity are consistent with the actual condition, thus this tire wearanalysis based on FEM is proved effectively once again.