关键词: 汽车, 木陶瓷, 制动衬片, 热弹性耦合, 磨损

Abstract: In this paper, an automobile brake lining made of wood ceramic is proposed, and a 3D model of a disc brake of a wood ceramic brake lining is established to simulate the thermoelastic coupling characteristics of the disc brake under the action of the wood ceramic brake lining under various braking conditions. Based on the Archard wear model and the UMESHMOTION subroutine in the ABAQUS software, the numerical simulation of the wear depth of the wood ceramic brake lining is realized. The results show that, when wood ceramic is used as the friction material of automobile braking, the peak temperature of the brake disc during the braking process is 254.25 ℃, which is 9.91 ℃ lower than that of the traditional metal brake lining, and the stress distribution is uniform. It is beneficial to reduce the generation of thermal cracks in the brake disc, and at the same time reduce the influence of the “thermal decay” effect of the brake disc on the stability of the braking performance of the vehicle. The temperature of the wood ceramic brake lining can reach a maximum of 281.41 ℃ during the braking process, which is far lower than the thermal decomposition temperature of the wood ceramic material, and has good reliability. With wood ceramic as the friction material of the brake lining, the maximum wear depth of a single high-speed emergency braking does not exceed 2.11 μm, which has good wear resistance.