【摘要】 摩擦块的接触面积和接触方式影响制动盘温度分布及峰值温度,温度场又是决定制动盘服役寿命的重要因素。利用ADINA有限元软件,针对设计的两种接触方式的三角形摩擦块与制动盘组成的摩擦副,数值模拟制动压力0.7MPa、制动速度200km/h工况下,接触面积对制动盘温度场的影响。结果表明,随接触面积的减小,峰值温度时刻与制动结束时的盘面温度小幅度升高。接触方式的不同,会导致盘面温度分布和峰值温度的差别。中间接触方式的接触弧长度长,盘面高温区集中在中部,温度高,径向温度梯度大。两侧接触方式位于两侧的摩擦区生热,利于向盘中部无摩擦区的热传导,使盘面温度均匀程度提高。更多还原

【Abstract】 The contact area and pattern of the brake pad affect the temperature distribution of brake disc,and the temperature field is an important factor that determines the service life of the brake disc.The friction pairs that composed of the triangle pad and brake disc in two contact patterns was studied.Using ADINA finite element software,under the conditions of 0.7 MPa braking pressure and 200 km/h initial speed,the influence of contact area on brake disc temperature field were simulated.The results show that the surface temperature of the brake increase slightly with the decrease of contact area at the moment of peak temperature and end of braking.Different contact patterns led to different temperature distributions and peak temperature.In the middle contact pattern,the contact arc length is long and the high-temperature zone of the disc surface was centralized in the middle with large radial temperature gradient.In the pattern of both sides contact,the heat generation in the friction zone at the two sides was beneficial to the heat conduction towards the frictionfree zone in the middle,thus improve the temperature uniformity of the disc surface.更多还原