高速多片湿式离合器带排转矩预测模型

The fluid-solid coupling motion of friction pairs in the high speed multi-disk wet clutch of the vehicle usually causes axial rub-impact between the friction plate and the steel plate, which leads to the drag torque of the friction pairs and decreases the efficiency of the vehicle transmission system. First, the coupling between friction pairs and rotating flow field was considered, and a fluid solid coupling dynamic model of friction pairs was established. Then, analyzing the rub-impacting process of friction plate and steel plate, an axial rub-impacting model was constructed to get the drag torque. Finally, the nonlinear motion response and the drag torque of the friction pairs at different rotational speeds were studied by numerical simulation, and the results were compared with the experimental results. The results show that with the increase of the speed of the clutch, axial rub-impact occurs at a critical speed, and the friction pairs change from stable state to chaotic motion state, and then the drag torque increases with the increases of the clutch speed.