Analysis of Wear Problem Between Independent Wheel and Rail

Different wear stage of the independent wheel and the worn rail head profile were measured by using wheel-rail profile admeasuring apparatus to establish the line segment,the curve segment and a certain attack angle of three dimensional finite element contact model respectively. The different wear stage of the wheel and the worn rail contact problem were studied. Through several kinds of wheel / rail contact models of elastic-plastic contact calculation,the contact spot area,contact normal force,Equivalent Von Mises Stress change rules of different models were summarized. The results show that with the increase of operation time,the maximum Equivalent Von Mises Stress becomes smaller and stable,and track gauge widening affects the change of wheel wear parts and the influence of wheel / rail wear rules. When the wheel / rail with a certain angle of attack contact,the maximum Equivalent Von Mises Stress appears in the flange and rail lateral contact place,and the influence of attack angle on the wheel / rail wear is quite serious.