Study on engaging characteristics of wet friction pair with copper-based powder metallurgical friction material

Copper-based powder metallurgy (Cu-PM) has become quite common as the frictional material for clutches in transmission system. However the traditional research on friction pair is still limited to the static, qualitative and semi empirical studies. Based on the study of the physical properties of Cu-PM materials, the mathematical model of the wet friction pair is established. Through a simulation example, the transmission torque and the oil film pressure are obtained. Furthermore, a test bench has been set up to test the wet friction pair with Cu-PM friction materials. The correctness of the mathematical model was proved by comparing the experimental data and simulation data.