Abstract
Rail corrugation is a very common phenomenon in high-speed railways. Rail corrugation can cause increased vibration of trains and tracks, and may even affect the safety of train operation. Therefore, this paper will analyze the vibration of the wheel-rail system caused by the rail corrugation. The actual transient rolling contact model is established by using explicit and implicit finite element methods. Through the calculation of the wheel-rail contact force and the wheel-rail mode, the vibration relationship between the rail corrugation and the wheel-rail system is obtained. It can provide some references for further analysis of the cause of rail corrugation.
Highlights
Rail corrugation is widely found in the railway sector
Rail corrugation is a kind of short-wave periodic irregularity, which mainly occurs on the top surface of the rail
In order to analyze the influence of rail corrugation on the vibration of the wheel-rail system in high-speed railway, this paper adopts the explicit and implicit finite element method to establish the transient rolling contact model of the wheel rolling over the rail corrugation section, and calculate the wheel-rail contact force and vibration mode, and reached the following conclusions: (1) The frequency of the measured wave grinding is in good agreement with the calculated frequency of the wheel-rail force
Summary
Rail corrugation is widely found in the railway sector. Whether it is high-speed railway, urban rail transit or heavy haul railway, there is the phenomenon of rail corrugation. The contact between the wheel and the track is simulated using a Hertz spring, the track is simplified to a beam, and the wheel is simplified to a mass point[5, 6]. These methods can provide a good reference for us to understand the corrugation, but many problems cannot be solved. An explicit and implicit combination method is used to simulate three-dimensional transient rolling contact, analyze the vibration response of the wheel rolling over the rail corrugation section. By analyzing the relationship between wheel-rail vibration response and corrugation, it provides a certain reference for understanding the cause of rail corrugation
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