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一、减速顶与车轮的接触减速顶安装在钢轨上,它通过与车轮的接触,对车轮产生反作用力,使车辆减速。现在安装在钢轨内侧的减速顶与车轮的接触关系,在理论上是点接触,而实际上由于弹性变形和塑性变形,二者是面接触,其接触面积大小主要取决于两个曲面各向的曲率半径。半径大,接触面积也大,接触应力则小。车轮与减速顶之间的磨耗性质是冲击加摩擦,磨耗规律是先快后慢到逐渐稳定,磨耗状态如图1所示:
First, the deceleration top and wheel contact deceleration roof mounted on the rail, it contacts with the wheel, the wheels of the reaction force, so that the vehicle deceleration. Now installed in the rail inside the deceleration top and wheel contact relationship, in theory, is the point of contact, in fact, due to elastic deformation and plastic deformation, the two are in contact with the contact area size depends on the size of the two surfaces in all directions Radius of curvature. Radius, contact area is also large, contact stress is small. The nature of the wear between the wheel and the deceleration top is the impact and friction, the law of wear is the first fast and slow to gradually stable, wear status shown in Figure 1: