Wheel-rail Rolling Contact Finite Element Analysis of the Wear State on the Curve of Subway Line

doi:10.3901/JME.2016.12.129

Abstract

Abstract: Based on the measured rail and wheel profiles of different wear depth of rail on the curve of urban rail transit, using the finite element analysis software, ANSYS, we establish wheel-rail contact three-dimensional elastic-plastic finite element model and then analyse the metro vehicle’s performance, the distribution of wheel-rail contact stress state and its impact on the rail wear under the matching of new wheel’s profile and three kind of rail’s profile. It is prone to have stress concentration on wheel/rail’s contact area because of their profiles’ inconsistency in the early of the rail’s use. And this kind of concentration causes the wear on rail more easily. With the increasing of the rail side grinding, the contact status of wheel and rail gradually change from one-point contact to two-point contact. It is easy to crack on the transition zone between plastic deformation and elastic area of the contact point. Under the two-point contact status, it is easy to arise larger contact pressure on gauge corner because that the outer gauge corners contact area and stress concentration area are much larger than the rail side section. The rail wear and fatigue injury is also more easy to generate in this status.

Key words: finite element analysis, s curve, side wear, subway’, wheel-rail contact force

CLC Number:

U213

ZHOU Suxia, XUE Rui, ZHANG Qian, ZHENG Xiaoyang. Wheel-rail Rolling Contact Finite Element Analysis of the Wear State on the Curve of Subway Line[J]. Journal of Mechanical Engineering, 2016, 52(12): 129-135.

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