Journal ArticleDOI
High-speed wheel/rail contact determining method with rotating flexible wheelset and validation under wheel polygon excitation
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TLDR
In this paper, a rotating flexible wheelset model is developed and integrated into a vehicle/track dynamic model, which considers the effect of the wheelset flexibility and the rotating effect.Abstract:
A rotating flexible wheelset model is developed and integrated into a vehicle/track dynamic model. Flexible wheelset modes with natural frequencies less than 1000 Hz are considered in the wheelset modelling. An innovation of the paper is that wheel/rail rolling contact calculation considers the effect of the wheelset flexibility and the rotating effect. By introducing two half dummy rigid wheelsets the rolling contact between the flexible wheelset and the two rails can be transformed to that between a rigid wheelset and the rails. As an extension application, the wheel OOR (Out-Of-Round) wears with the 11th, 15th, and 17th orders are used to the vehicle system dynamic model with rigid, flexible and rotating-flexible wheelset model. The results of the three models are compared to study the influence of wheelset flexibility and rotation. The ‘online searching contact method’ developed in this paper is compared with the traditional contact method with considering the rotating flexible wheelset. And then a me...read more
Citations
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Journal ArticleDOI
Polygonisation of railway wheels: a critical review
TL;DR: The characteristics, effects, causes, and solutions of wheel polygonisation in metro vehicles, locomotives, and high-speed trains in China are summarized and guidance is provided on further understanding the formation mechanisms, monitoring technology, and maintenance criterion of wheel Polygonisation.
Journal ArticleDOI
Wheel flat can cause or exacerbate wheel polygonization
TL;DR: In this paper, the relevant standards have specified the operational limits for wheel flats in terms of the length of the wheel flat, but in the actual operation, in the case of railway wheels, these operational limits were not defined.
Journal ArticleDOI
Locomotive wheel polygonisation due to discrete irregularities: simulation and mechanism
TL;DR: In this article, the wheel roughness measured in the field sites indicates that some wheels suffer from discrete wheel irregularities, such as wheel bends, which is a common issue occurring on locomotive wheels.
Journal ArticleDOI
Experimental and Numerical Investigation into Formation of Metro Wheel Polygonalization
TL;DR: In this paper, a detailed investigation of the mechanism of metro wheel polygonal wear using on-site experiments and numerical simulation is presented, where the authors suggest that the P2 resonance is the main contributor to the high amplitude of wheel/rail contact forces in the 50-70 Hz frequency range.
Journal ArticleDOI
Impact of wheel profile evolution on wheel-rail dynamic interaction and surface initiated rolling contact fatigue in turnouts
TL;DR: In this article, the accumulated surface initiated rolling contact fatigue (RCF) of turnouts is evaluated based on the shakedown theory and the wheel transition position is shifted backwards with wheel profile evolution.
References
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TL;DR: In this article, the authors bring together coverage of the theory of railway noise and vibration with practical applications of noise control technology at source to solve the problems of railway traffic noise and vibrations.
Journal ArticleDOI
A Comparison of Alternative Creep Force Models for Rail Vehicle Dynamic Analysis
Z. Y. Shen,J. K. Hedrick +1 more
TL;DR: In this paper, a comparison of alternative Creep Force Models for rail vehicle dynamic analysis is presented, and the results show that the alternative models are less accurate than the original models in terms of acceleration and acceleration.
Journal ArticleDOI
Out-of-Round Railway Wheels - a Literature Survey
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Journal ArticleDOI
Enlargement of out-of-round wheel profiles on high speed trains
TL;DR: In this article, a vehicle-track model was developed to describe the short-term system dynamics of an ICE-1 carriage while running on an elastic track, disturbances by wheel radius deformations are assumed.
Journal ArticleDOI
An investigation into the mechanism of the polygonal wear of metro train wheels and its effect on the dynamic behaviour of a wheel/rail system
TL;DR: In this article, a detailed investigation conducted into the mechanism of the polygonal wear of metro train wheels through extensive experiments conducted at the sites is presented, including model tests of a vehicle and its parts and the tracks, the dynamic behaviour test of the vehicle in operation and the observation test of polygonale wear development of the wheels.