Engagement of a rough, lubricated and grooved disk clutch with a porous deformable paper-based friction material

The engagement of wet clutches was simulated using Berger's model (1997) and torque equations. Influencing parameters were studied such as surface roughness, fluid viscosity, friction characteristics, material permeability, moment of inertia, groove area ratio and Young's modulus. One big concern for the wet clutch engagement is engagement time which affects the friction generated heat and thus the temperature. Another major concern is the torque response that is of importance to study clutch shudder. Surface roughness, viscosity and friction curves affect the engagement time and torque response. The moment of inertia has a big influence on the engagement time rather than the torque. Permeability, groove area and Young's modulus have less effect on the torque than the other parameters.