Numerically Analysis on Characteristics of the Tire Load of Cars

Linear and stiff kinetic behaviors of cars are discussed. Then, a stiff-car-steady-cornering model is developed. A numerical method to determine the tire load is developed, which is used to analyze the characteristics of the tire load. The vertical tire load is linearly proportional to the lateral acceleration, but that of the lateral acceleration and the transverse tire load is quadratic nonlinear. On the large coverage of mileage the absolute changing rate of the transverse load with respect to the lateral acceleration is higher than that of the vertical load. The lateral acceleration has a significant influence on the tire load. It affects more remarkably on the transverse tire load than on the vertical load. The proposed method and the characteristic of tire load can be used for calculating the wheel-bearing force and the service life as well as developing the wheel-bearing endurance test loading sequence.