Transient thermo-mechanical coupling simulation of wet brake friction disk on tracked vehicle

The transient finite element technique is applied, and a transient heat conduction model of wet brake friction disk is established. For obtaining the accurate heat-flow density mathematic model and avoiding possibly instable thermoelastic stress produced by the non-uniform contact pressure of friction pair, a test method is applied to collect accurate contact pressure between the dual sheet steel and friction disk in the combining process. And then the heat-flow density and transient thermo-mechanical coupling simulation are analyzed. At the same time all possible boundary conditions are considered, such as the heat generation, heat conduction problem, relation between friction and contact, variation in load and heat change problem etc. The simulation results show that the mechanical model of thermo-mechanical coupling can express well the dynamic characteristics of friction disk, and gives perfect reference for more study on thermoelastic distortion of brake friction pairs.