Severe wear is a common damage mechanism in railway turnouts, which strongly affects the dynamic performance of\nrailway vehicles and maintenance costs of tracks. This article explores the effects of profile wear on contact behaviors in\nthe wheelââ?¬â??rail/switch contact and dynamic interaction, and nominal and measured worn turnout rail profiles are used as\nboundary conditions of wheelââ?¬â??rail contact. The calculation of the dynamic loads and the resultant contact stresses and\ninternal stresses makes it possible to rationally design railway turnouts and correctly select the material to be applied\nfor their components. For these reasons, the multi-body system SIMPACK and finite element software ANSYS are used\nto calculate the features of load and subsequently distributions of contact stresses and internal stresses in the regions of\nwheelââ?¬â??turnout components. The results show that profile wear disturbs the distribution of wheelââ?¬â??rail contact point\npairs, changes the positions of wheelââ?¬â??rail contact points along the longitudinal direction, and affects the dynamic interaction\nof vehicle and turnout. For the measured profile in this article, profile wear aggravates vertical dynamic responses\nsignificantly but improves lateral dynamic responses. Profile wear disturbs the normal contact situations between the\nwheel and switch rail and worsens the stress state of the switch rail.
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