Experimental investigation of influential factors on adhesion between wheel and rail using twin-disc test

초록

In railway system, the adhesion between a wheel and a rail is a very important parameter to maintain safety operation when braking and driving, which is related to the maintenance cost. If the adhesion coefficient is not sufficient, wheels slide on the rail in braking of vehicles and this phenomenon causes some damages on the contact surface of wheel such as wheel flats. The adhesion is influenced by many factors such as slip ratio, water, velocity, wheel/rail contact pressure, as well as environmental factors such as temperature and humidity. In this study, we has investigated the effects of slip ratio, velocity and contact pressure on the adhesion between wheel and rail under dry and water conditions by using twin-disc test.