基于ABAQUS的列车盘型制动的温度场分析

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The influences of rotating speed and the friction radius, height and shape, and place form of braking block on the temperature field of the brake disc and brake block were simulated by the finite element analysis software of ABAQUS. The results show that with the increase of crank＇s rotating speed, the brake disc and brake block＇s temperatures are increased, and the distribution of high temperature region is changed from stripe to speckle. The reason is that with the increase of revolving speed, the vibration between the friction pairs is aggravated, and the local contact was produced to cause the high temperature. There is an inflection point of temperature in the thickness direction of brake disc, with the increase of the distance to the friction surface, the temperature is declined rapidly, and in the distance of 3 - 6 mm to the friction surface, the change of temperature is not obvious. The change of brake block height or shape has no obvious influence on the brake disc temperature, while the placement form of the triangle brake block has influence on temperature distribution.应用有限元软件ABAQUS，模拟转动速度和制动块摩擦半径、高度以及形状与放置形式等对制动盘和制动块温度场的影响。得出如下结论：随转速的提高，制动盘和制动块温度升高，高温区的分布由条带状向斑点状转变，原因在于随转速增加，摩擦副间的振动程度加剧，从而造成局部接触产生高温。制动盘温度在厚度方向上存在一个拐点，随深度增加，制动盘温度快速下降，在距摩擦表面3～6mm时，温度变化不明显。制动块高度、形状改变，对制动盘温度无明显影响，而三角形制动块的放置形式对制动块温度分布有影响。