This article mainly aims at the study of dry disc brake friction pair thermal-mechanical coupling. Through the calculation of heat source model, the mechanism of produce heat and friction heat production are obtained. Through the study of rough surface contact theory, the contact thermal resistance model of contact surface is established. The distribution of braking energy in two planes is calculated by working condition of tracked vehicle. An abaqus finite element analysis model is established under the influence of rough surface contact thermal resistance on friction pair. It is compared with the traditional finite element simulation. The second heat source heat distribution is considered in new model. The more accurate calculation results can be obtained by consideration of surface thermal resistance effect in thermal-mechanical coupling simulation. In this way, the temperature distribution of the riveted friction pair is obtained. The accuracy of the finite element model is verified by the brake bench test, which provides a meaningful reference for the design of the heat resistance of the brake.
Using ABAQUS software, the temperature field in the process of sliding friction of the dual steel plate of a new friction plate-conical friction plate was simulated and analyzed by the method of thermo-mechanical coupling. The distribution of heat flux density and the convective heat transfer on different surfaces of the dual steel were considered in the calculation. It is found that the highest temperature of the dual steel during sliding is inside the tapered groove. The temperature inside and outside of the tapered groove is distributed in a low-high-low state, that is, the temperature at the bottom of the tapered groove and the top of the groove is higher than the middle position The temperature gradient of the radial node gradually becomes larger with the passage of time; the temperature distribution of the entire dual steel plate shows a symmetrical trend.
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