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为了解决重载车辆盘式制动器使用寿命短、热变形较大等问题,以油冷盘式制动器为研究对象,建立油冷盘式制动器制动工况下热机耦合分析模型,最后得到制动盘厚度与冷却油流速对制动器制动盘接触表面、内部的应力场、温度场分布影响规律。研究结果表明,油冷盘式制动器在连续制动工况下最高制动温度与最大制动应力均满足材料使用要求;随着制动盘厚度增加,制动器制动温升变化量、应力值均呈现下降的趋势;随着油液流速的增加,制动器最高温度与最大应力也呈现下降趋势,且当油液流速为4 m~3/h时,制动器应力值稳定。
In order to solve the problems of short service life and large thermal deformation of heavy-duty vehicle disc brakes, an oil-cooled disc brake is taken as the research object to establish a thermo-mechanical coupling analysis model under brake conditions of oil-cooled disc brakes. Finally, The effect of flow rate of cooling oil on the contact surface of brake disc, the internal stress field and the distribution of temperature field. The results show that the maximum braking temperature and the maximum braking stress of the oil-cooled disc brakes satisfy the requirements of the material under continuous braking conditions. With the increase of the thickness of the brake disc, the temperature changes and the stress values of the braking brakes appear The maximum temperature and the maximum stress of the brake also showed a downward trend with the increase of oil flow rate, and the brake stress was stable when the oil flow rate was 4 m ~ 3 / h.