论文标题
提高速度对NT-11火车轴箱盒的结构的影响
The effects of increasing speed on the structure of axle box bogies of NT-11 trains
论文作者
论文摘要
研究了由PT Kereta API印度尼西亚操作的NT-11经济火车的轴箱盒子上的裂缝的发生。这些轴箱式转向架的设计最高速度为90 km/小时。当前的市场需求导致最大速度提高到110 km/小时。我们研究了这种速度增加的轴盒裂缝发生的影响。基于从PT Kereta API印度尼西亚获得的数据，首先使用统计方法来查看裂纹的发生与某些参数之间的关系，即到单向目的地的距离，速度和火车所能到达目的地的停靠次数。从这项统计研究中，停止频率是影响裂纹发生的最主要因素，并且速度的增加导致裂缝的发生增加。然后，设计了一个数学模型，以进一步描述这种增加速度对轴盒子循环结构的影响。从该模型中，得出了共振分析，并进行了数值实验。结果表明，货车共振高度取决于速度。典型数据的一个示例表明，这种共振发生在火车以约104 km/小时的速度达到速度时。据信这些共振效应会在轴盒子的部分之间产生更大的距离，从而影响裂纹的发生。
The occurrence of cracks on the structure of axle box bogie of NT-11 economic trains operated by PT Kereta Api Indonesia is studied. These axle box bogies were designed for the maximum speed of 90 km/hour. The current market demand led to an increase in maximum speed to 110 km/hour. We investigate the effects of this speed increase in the occurrence of cracks of the axle box bogies. Based on the data obtained from PT Kereta Api Indonesia, a statistical approach is first used to see a relationship between the occurrence of cracks and some parameters, namely the distance to one-way destination, the speed, and the number of stops that the trains make to arrive at the destination. From this statistical study, stopping frequency is the most dominant factor that affects the occurrence of cracks and that the increase in speed leads to an increase in the crack's occurrence. A mathematical model is then designed to further describe the effects of this increased velocity on the structure of axle box bogies. From this model, a resonance analysis is derived and numerical experiments are carried out. It is shown that the wagon resonance is highly dependent on the velocity. An example of typical data shows that this resonance occurs when the train reaches a velocity at approximately 104 km/hour. These resonance effects are believed to create a larger distance between parts of the axle box bogie that influence the occurrence of the cracks.
