用伪焦散线法研究轮轨动态接触问题

Dynamic Contact Between Wheels and Railway Rails

采用动态伪焦散线实验方法对机车车辆由于簧上部分振动产生的轮轨间接触压力的变化进行研究,设计了伪焦散线图和云纹图同时记录的光路,并给出了计算每一瞬时接触压力的循环迭代公式。以两个典型的轮轨接触模型为例进行了实验研究,并分析了所得出的实验结果。

A Cranz—Schardin type high speed camera was modified to record Moire and shadow spot patterns simultaneously. From these patterns, the dynamic contac stresses on deformed boundary could be evaluated by using a numerical iteratiw method. The results of two typical examples were provided to show the properties of dynamic contact stresses between wheels and railroad rails.