Abstract
There is a possibility that wheel wear leads to such problems as noise, lowering of running stability and impairment of ride-comfort. Therefore, it is essential to predict wheel wear in order to actualize running stability and running safety of railway vehicles. Previous studies on prediction of wheel wear progress have identified wear coefficient and conducted wheel wear tests with the use of twin desk and model wheelset. In wheel wear tests by equipment as described above, wheels run on roller rig. In this case, contact condition is different from the case that wheels run on roller in terms of creep, contact force and contact area. It is considered that contact condition of a wheel and a rail affects development of wheel wear Thus, in the case of wear test with twin desk and model wheelset, it is necessary to grasp differences of contact condition between the case wheels run on rail and the case wheels on roller rig. In this paper, from the view point of multi body dynamics, wheelset / roller rig analysis model is constructed. In this paper, from a view point of multi body dynamics, wheelset / roller rig analysis model is constructed in consideration of the contact geometry between wheel and rail. By conducting numerical analysis, differences of contact condition between the case wheels run on rail and the case wheels on roller rig are compared and examined.
