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一、前言对于车轴轮座的强度,特别是它的疲劳强度,己经在①轮座部的微动磨蚀及其发生原因、②轮座的疲劳强度及其提高方法、③轮座部的疲劳寿命及其统计特性、④实际工作应力等方面进行了大量研究,其研究成果的一部分已经应用到车轴的实际设计和维修上了。通过这些研究,弄清了这样一个重要机理,即轮座强度受轮座部微动磨蚀产生的微裂纹的影响,但要完全防止微动磨蚀的发生,目前来讲还很困难,所以,对这些微裂纹扩展时的强度确切地进行评价还是一项重
I. INTRODUCTION For the strength of the wheel axle seat, especially its fatigue strength, the fretting abrasion of the wheel seat part and its causes have been discussed. The fatigue strength of the wheel seat and its improving method, the fatigue of the wheel seat part, Life expectancy and its statistical characteristics, ④ actual work stress and other aspects of a large number of studies, part of its research results have been applied to the actual design and maintenance of the axle on the. Through these studies, we have found out an important mechanism that the strength of the wheel seat is affected by the micro-cracks generated by the fretting abrasion of the seat portion. However, it is currently difficult to completely prevent the occurrence of fretting abrasion. Therefore, It is still a serious matter whether the strength at the time of expanding these microcracks is exactly evaluated