Analysis of wheel and rail Hertzian and Non-Hertzian contact theories using UM software considering the effect of rail inclination on wheel wear
Authors
Abstract:
Wheel-rail interaction has always been one of the issues in the railway industry. In this paper, the effect of Hertzian and non-Hertzian contact theories on the wheel wear due to the rail inclination was investigated. by using the UM software. According to the results, longer contact areas are obtained in non- Hertzian contact theory compared to Hertzian contact theory. In non-Hertzian contact areas, the wear band and wear depth in the areas near the flange were decreased with increase rail inclination, while it was opposite in Hertzian contact areas.The distribution of wheel and rail contact points in the Hertzian contact is scattered in the final wheel profile, while in non-Hertzian contact the accumulation of the contact points is observed.
similar resources
Analytical Approach to Vibration Analysis Of the Wheel-rail contact
Wheel/rail contact simulation is one of the most complicated problems in the modeling of railway vehicles. The wheel/rail interaction plays a unique role in rail vehicle dynamics. In this paper, the dynamic response of the wheel on irregular rail track is analyzed with analytical approach using the method of Multiple Scales (MMS). The Hertzian contact theory is used to obtain the relationshi...
full textFpga Implementation of Wheel-rail Contact Laws
This paper presents the development of an accelerator for the real-time simulation of wheelrail contact laws (Hertz and Fastsim), which would enable the use of hardware-in-the-loop for experimental studies of the latest active control technology for wheelset stabilization and steering. The complex wheel-rail contact laws are implemented using a single FPGA chip that outperforms modern general-p...
full textanalysis of effective factors on rail failure and exerted stress on rail and wheel
rails fracture by the growth of fatigue crack or critical crack is one of the prevalent defects in railway. the rail fracture, failure and stress analysis should be studied in order to prevention of rail fracture. in this paper, new formulation of contact stress for two rolling bodies is presented, where the results are closed to the hertz stress formulation. moreover, stress analysis is done b...
full textPreliminary results on dynamic analysis of a new test rig for wheel-rail contact studies
A new reduced–scale test rig is developed owing to significantly contribute to the applicability of the laboratory tests on rolling contact fatigue (RCF) in wheel-rail material. This paper introduces the dynamic analysis of the test rig, in order to assess the vibration behaviour of the system with respect to contact phenomenon. Finite element modelling (FEM) is used to simulate the mecha...
full textModeling the Dynamic Behaviour of the Wheel Rail Interface Using a Novel 3d Wheel-rail Contact Model
Methods for multibody modelling and simulation should accurately replicate the dynamic behaviour of rail-wheel interface including precise values for wheel-rail contact positions. This paper studies the development of a novel 3-D wheel-rail contact model which is used for dynamic simulation of a suspended wheelset with parameters listed for a typical Mark IV coach. The contact point locations o...
full textImpacts of Wheel–rail at Railway Turnouts
Investigation of vertical vibrations of a railway turnout is important in designing track components under moving loads of trains. In this paper, the turnout is simulated by a linear finite element model with modal damping. A section of the turnout has a length of 36 sleeper spans surrounding the crossing. Rails and sleepers are modeled with uniform Rayleigh-
Timoshenko beam elements. The ra...
full textMy Resources
Journal title
volume 8 issue 2
pages 21- 32
publication date 2021-03
By following a journal you will be notified via email when a new issue of this journal is published.
No Keywords
Hosted on Doprax cloud platform doprax.com
copyright © 2015-2023