湿式离合器接合过程瞬态温度场仿真

he excessive thermal load will exacerbate the thermal failure of friction pairs during the wet clutch engagement. Based on the analysis of the wet clutch engagement dynamics model, the friction pair heat flux model was studied. An 3D finite element model of the friction pair was established then. The influence of engagement pressure, sliding velocity and the thickness of the friction pair on the transient temperature field was researched. The vary law of the temperature field was obtained. Simulation results show that the temperature of each point on the friction pair will increase as the radial distance away from the clutch shaft. The high temperature zones are near the outer radius of friction pair, but the temperature dropped when at the largest radius. The simulation results also show that engagement temperature can be decreased by increasing the initial engagement pressure, reducing the relative speed and increasing steel thickness.