Comparative Analysis of the Wheel-rail Contact Property of the Tread Profile of a Certain Model of High-speed Train
This article studies the existing tread problems of a certain model of high-speed train such as frequent appearance of fatigue cracks and heavy reprofiling workload of some wheelsets and by calculating the contact property of the wheel tread with current rails of high-speed railways,it discovers the phenomena of greater wheel-rail contact stress and stress concentration on contact point.To solve this problem,this article describes an alternative type of tread W01 GT3.By comparing the geometric contact property,the wheel-rail contact stress and the fatigue crack initiation life under straight line running conditions of the two types of tread with different lateral displacements of wheelset,it turns out that W01 GT3 tread has a wider area of contact with rail,a smaller wheel-rail contact stress and a longer fatigue crack initiation life under straight line running conditions.Therefore,it's recommended to use the template similar to this type of tread during reprofiling to alleviate fatigue-related tread problems of a certain model of high-speed train.
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万方数据
维普
