구름접촉을 고려한 레일표면균열발생수명 예측 S/W 개발

초록

Fatigue damage at the surface of railway rail under rolling contact fatigue is increasing with the increase of axle load and vehicle speed. Although it is very important to know the moment of surface damage initiation for the proper rail maintenance and the secure of railway safety, it is very hard to perform the fatigue damage assessment in field because the analysis require very complex modeling of finite element analysis, high computing power and very expensive analysis software. For this reason, in this study, we developed a standalone computing software for the prediction of fatigue damage initiation life at railway surface under rolling contact fatigue. For this purpose, several fatigue life models were programmed. By using this software, we expect that it is possible to predict the damage initiation life even though in the field by railway engineer who is not a fatigue expert.