Study On Mechnism Of Rear Tire Uneven Wear Of Passat Car

This paper studis the tire uneven abrasion (TUA) influenced by the dynamic characters of twist beam suspension by theory analysis, sinulation and test in this paper. It also gives a method to study the TUA. It establishes the equivalent model made use of FEM analysis and the related theorise, which could reflect the dynamic charaters of the axle in this paper. Based on the axle model, it establishes the equivalent dynamic charadters of multi body model system, including twist beam suspension, tires and the ground.The equivalent model is established in ADAMS, and analysed the static and dynamic characters of twist beam suspension. The movements of aligning parameters are discussed according to the simulation. Studying the influencing degree of aligning parameters through changing the value of the equivalent parameters, finding out the best value range. It supplies the foundation for optimizing the twist beam suspension. In order to testify the feasibility of the equivalent model of twist beam suspension, a car is tested on the IST-test-patch according to the process of simulation. Comparing the results of the simulation and the test verifies the correctness of the equivalent model. It also discusses the TUA from the point of view of theoretics, confirms the estimate target of tire abrasion quantity. Based on the simulation, the variety of tire abrasion quantity is analysed according to the differet value of aligning parameters.The whole study is concentrated on the simulation in ADAMS combining test and theory, giving the result that the movements of aligning patameters influenced by the dynamic characters of the twist beam suspension cause TUA. It provides a new and feasible study method to research TUA and designating an approach to reduce and avoid TUA.