A Review of the Effects of Out-Of-Round Wheels on Track and Vehicle Components

Barke, Derek Woolrich; Chiu, Wing Kong

doi:10.1243/095440905x8853

Cited by 120 publications

(68 citation statements)

References 94 publications

(181 reference statements)

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“…According to a review of recently published papers on the effect of out-of-round wheel on track and vehicle components [6], the welds are the weakest points in the continuous rail [7]. Aluminothermic welds are of poorer quality than flash butt and gas pressure welds [8].…”

Section: Introductionmentioning

confidence: 99%

Track dynamic behavior at rail welds at high speed

Xiao

Guo

et al. 2010

Acta Mech Sin

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As a vehicle passing through a track with different weld irregularities, the dynamic performance of track components is investigated in detail by using a coupled vehicle-track model. In the model, the vehicle is modeled as a multi-body system with 35 degrees of freedom, and a Timoshenko beam is used to model the rails which are discretely supported by sleepers. In the track model, the sleepers are modeled as rigid bodies accounting for their vertical, lateral and rolling motions and assumed to move backward at a constant speed to simulate the vehicle running along the track at the same speed. In the study of the coupled vehicle and track dynamics, the Hertizian contact theory and the theory proposed by Shen-Hedrick-Elkins are, respectively, used to calculate normal and creep forces between the wheel and the rails. In the calculation of the normal forces, the coefficient of the normal contact stiffness is determined by transient contact condition of the wheel and rail surface. In the calculation of the creepages, the lateral, roll-over motions of the rail and the fact that the relative velocity between the wheel and rail in their common normal direction is equal to zero are simultaneously taken into account. The motion equations of the vehicle and track are solved by means of an explicit integration method, in which the rail weld irregularities are modeled as local track vertical deviations described by some ideal cosine functions. The effects of the train speed, the axle load, the wavelength and depth of the irregularities, and the weld center position in a sleeper span on the wheel-rail This project was supported by the National

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Section: Introductionmentioning

confidence: 99%

Track dynamic behavior at rail welds at high speed

Xiao

Guo

et al. 2010

Acta Mech Sin

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“…In railway applications, the vibration monitored by the accelerometer in the track can be converted into force, and then be used for detecting wheel defects or counting the number of axles (in this case a supplementary method is needed) [68,69]. Field testing has been extensively executed for validating the ability of accelerometer based condition monitoring systems to capture several train features for different passing speeds from the track vibration [70].…”

Section: Accelerometermentioning

confidence: 99%

State-of-the-Art Review of Railway Track Resilience Monitoring

2018

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Abstract:In recent years, railway systems have played a significant role in transportation systems due to the demand increase in conveying both cargo and passengers. Due to the harsh environments and severe loading conditions, caused by the traffic growth, heavier axles and vehicles and increase in speed, railway tracks are at risk of degradation and failure. Condition monitoring has been widely used to support the health assessment of civil engineering structures and infrastructures. In this context, it was adopted as a powerful tool for an objective assessment of the railway track behaviour by enabling real-time data collection, inspection and detection of structural degradation. According to relevant literature, a number of sensors can be used to monitor track behaviour during the train passing under harsh environments. This paper presents a review of sensors used for structural monitoring of railway track infrastructure, as well as their application to sense the performance of different track components during extreme events. The insight into track monitoring for railways serving traffic with extreme features will not only improve the track inspection and damage detection but also enable a predictive track maintenance regime in order to assist the decision-making process towards more cost-effective management in the railway industry.

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“…For the periodic OOR, a sinusoidal function is used to describe the harmonic deviation in wheel radius from the nominal constant one. The instant rolling radii error can be expressed as (2) Where, is OOR order defined as the number of periods around the wheel circumference, it ranges between 1 to 20 (first, second, third, fourth, ……and 20 th OOR order). is OOR amplitude which is defined here to be half the difference between the maximum and minimum value of a nearly sinusoidal curve.…”

Section: B Wheel Polygonalizationmentioning

confidence: 99%

“…The second order periodic polygonalization of railway wheels is wheel ovalization. The difference between the length of the semi-major axis and the semi-minor axis is defined as the ovalization extent as described in (2). The following cases are calculated: Case 1 corresponds to the condition that the ovalization extent varies between 0.4~2.0 mm , and train speed keeps constant at 300 km/h.…”

Section: B Wheel Polygonalizationmentioning

confidence: 99%

Research on The Control of Out-of-Round Wheel Profiles of High-Speed Railway Derived From Numerical Simulations

Song¹,

Wang²

2013

Int. J. Onl. Eng.

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Abstract-Periodic non-roundness of railway wheels will cause a series of variety on vehicle/track coupling system dynamic responses. A coupling dynamics model of railway vehicle with out-of-round wheels and track was built based on ADAMS/Rail. The effect of periodic non-roundness of wheel on the dynamical behavior of the vehicle system was analyzed. The numerical results regarding the misalignments of the vehicle and wheelset, the vertical wheel/rail contact forces and the reduction in the wheelset loading are presented under the conditions in which the wheels are in out-of-round and the train speed is from 200 km/h to 350 km/h. The results show that the dynamical vertical wheel/rail interaction forces are much related to the wheel out-of-roundness status. The critical range of the wheel outof-roundness is determined according to the traditional criterion of wheelset loading reduction for safely running estimation. It's pointed out that out-of-round railway wheels can be detected by wheel/rail interaction force real-time monitoring system to guarantee safety and to minimize costs for repair and maintenance.Index Terms-High speed train wheelset; out-of-round wheel; wheel/rail impact vibration; ADAMS/Rail

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A Review of the Effects of Out-Of-Round Wheels on Track and Vehicle Components

Cited by 120 publications

References 94 publications

Track dynamic behavior at rail welds at high speed

Track dynamic behavior at rail welds at high speed

State-of-the-Art Review of Railway Track Resilience Monitoring

Research on The Control of Out-of-Round Wheel Profiles of High-Speed Railway Derived From Numerical Simulations

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