The Simulation Analysis Of Tire's Stiffness Characteristics And Rolling Resistance

Mechanical properties of tire exerts very important influence on the performance of vehicles. As the static mechanical properties, Stiffness characteristics of the tire reflect not only the safety, power, operating stability performance of vehicles, but also is an indispensable parameter of vehicle design and analysis. The rolling resistance of tire reflects the dynamic mechanical properties which is closely related to the fuel economy performance. The energy consumed by the rolling resistance takes about 1 / 5 in the whole energy consumption of vehicle. In recent years, with the number of car ownership in China significantly increasing, vehicle energy consumption also has remarkably increased. This serious energy situation and environmental pressures have created a distinctive contrast. This means that the development of high-quality tires and reduction of rolling energy loss of tire are imperative.Firstly, a three-dimensional (3D) finite element model of 205/55R16 tire is established. Considering the influence of the nonlinear aspects (such as the material nonlinearity of rubber, geometric nonlinearity, and contact nonlinearity), the deformation of the tire under different loadings (i.e. radial load, lateral load, longitudinal load and torsion torque) is analyzed by ABAQUS, and the corresponding stiffness are obtained.Secondly, proceeding from the material properties and the deformation of the tire, this article elaborates the mechanism of rolling resistance, on the basis of which a complete set of tire deformation - energy analysis system is established. Furthermore, based on 205/55R16 radial tire rolling resistance simulation analysis, this article obtains the distribution of energy loss of the tire cross section and also analyes the influence of the load, inflation pressure, steady speed, cord angle on tire rolling resistance and the coefficient.In this paper, the simulation results of stiffness and rolling resistance are consistent with the corresponding test which shows the simulation method is reasonable. The current study is of very positive significance for the optimization of the tire structure, prediction of tire rolling resistance, and promotion of low rolling resistance and green tires.