Description this paper aims to trace surface evolution in the wheel rail interface using data obtained from a twindisc testing machine and the surface replication technique. Wheelrail interface handbook free download as pdf file. Kevin oldknow chief engineer, wheel rail interface l. The rail transit seminar is devoted to examining wheel rail and vehicletrack interaction on light rail and subway operations.
Horizontal and vertical forces generated at the wheel rail interface combine into a resultant force typically, the high rail experiences flange contact but not the low rail figure 7. Rail track and associated equipment for use underground in. The wheelrail interfacesome recent accidents smith. Some aspects of the history of rails and wheels are introduced. Several recent accidents involving the wheel rail interface are described. This work should be read in conjunction with rtu report 903a, determination of tramway. The legal framework 9 the principal legislation associated with the selection, installation and maintenance of rail track and associated equipment for use underground in mines is listed in the appendix. As a main part of continuously welded rail track, rail weld widely exists in highspeed railway.
Integrated wheelrail characterization through advanced. Rail wheel systems cm2003 in gothenburg, sweden june 10, 2003 submitted to wear journal june 2003 optimal design of wheel profile for railway vehicles i. Wheel rail interface handbook pdf free download epdf. The rail steel can be assumed to have a shear yield strength of k70 ksi. Thus better understanding of wheel rail interfaces is critical to improving the capacity, reliability and safety of the railway system. Many of the engineering problems of particular importance to railways arise at interfaces and the safetycritical role of the wheel rail interface is widely acknowledged. Wheelrail interface management in heavy haul railway. Guard rails are usually placed parallel to regular running rails along areas of restrictive. However, shortwave irregularities can easily initiate and develop in rail weld due to the limitation of welding technology and thus rail weld has been a main highfrequency excitation and is responsible for deterioration of track components. The current paper presents the analysis of rcf damage initiation and stress distribution at the wheelrail interface at different directions. Fundamentals of wheelrail interaction michael roney consultant and retired chief engineer, canadian pacific dr.
Wheelrail interface handbook request pdf researchgate. Wheel rail interface monash institute of railway technology. The scope of this chapter is the modelling of the force balance at the wheelrail interface in railway vehicles. Wheelrail interface handbook is a onestop reference for railway engineering practitioners and academic researchers. Part 1 if grooved girder rail is used, then a wheel flange profile optimized for the girder rail should be. Pdf vehicle dynamics and the wheelrail interface researchgate. Railway and rail transit track infrastructure and components. Several recent accidents involving the wheelrail interface are described.
This interaction is a specialist subject covering the design and management of the very high stresses in the small contact area between a steel wheel and steel rail. The importance of the wheelrail interface to the safe operation of railways is discussed. Third, the wheel rail contact system is an open system, which is affected by various contaminants foreign substances applied both intentionally and unintentionally to the wheel rail interface 2. Part one provides the fundamentals of contact mechanics, wear, fatigue and lubrication as well as stateoftheart research and emerging technologies related to the wheel rail interface. Olofssoncrc press boca raton boston new york washington, dc.
Pdf presented at wheels on rails an update, seminar of the institution of mechanical engineers, london, april 2002. This work reports a 3d finite element model of wheel. Wheel rail interface handbook is a onestop reference for railway engineering practitioners and academic researchers. After describing the wheel rail stressstate and its consequences, preventative and corrective measures that can assist in. Reducing friction levels between the rail gauge face and wheel flange is important in reducing wear rates in curved track. Quantification of rail transit wheel loads and development. Light rail circulator systems infrastructure 12th national light rail conference. A steel wheel requires very little energy to roll on a steel rail. The web configuration of the wheels for domestic services is classified into three typestype a, type b, and type cas shown in fig. By bob tuzik for three years running, new york city transit and the federal transit administration have kicked off the annual wheel rail interaction rail transit conference with discussion of the nyctfta research project to explore integrated wheel rail analytics on mtanycts no. The importance of wheelrail interface management on energy savings and sustainability railroad wheels and rails are made of high strength steel.
Redesign and optimisation of the wheel rail interface is a bold step for a railway system to take. Vehicle dynamics and the wheelrail interface by jerry evans, aea technology rail simon iwnicki, manchester metropolitan university mmu from. Zeta 900 kings highway north, suite 208 cherry hill, nj 08034 phone. This crossdisciplinary seminar will include presentations from experts in vehicletrack dynamics, noise and vibration, wheel rail profile design and maintenance, and friction management. Public transportation, transit safety, wheel interface, resiliency, energy, friction management, conditionbased maintenance, machine vision, vibration, acoustics, wheel wear, life cycle cost 15. Materials used for wheels on rolling stock railway research. Apta prms01506 standard for wheel flange angle for. The focus is on simulation of vehicle dynamics and.
As the wheel rail contact is an open system, the adhesion between the wheel and rail is inevitably affected by contaminants. Railway system operational performance, capacity and efficiency. Friction in wheel rail contacts universiteit twente. With the ongoing increase on the speed, the possibility of train derailment increases, especially on the sharp curved tracks. Interface journal the journal of wheelrail interaction. Rolling contact fatigue rcf results in damages on the railhead surface and wheel tread. Study of surface evolution in the wheel rail interface final. One of the key issues in developing a dualoperation wheel profile was managing the contact conditions within the wheel rail interface. Study of surface evolution in the wheelrail interface.
Wolf whether you are primarily interested in the track or the vehicle side of the wheel rail interface, the effects of truck warp should be of interest to you. Part one provides the fundamentals of contact mechanics, wear, fatigue and lubrication as well as stateoftheart research and emerging technologies related to the wheel rail interface and its management. Challenges of wheel rail interface to combat leaf contamination a collaborative project between east japan railway company and the university of sheffield kei ishizaka east japan railway company, assistant manager tokyo, japan. The contact area at each wheel tread low rail interface is approximately circular, with a typical radius of 7mm. Wheel rail interface rail adhesion from wikipedia, the free encyclopedia. Each year around the world there are still several cases of train derailments on the curved tracks due to overspeed, leading to big casualties and costs to the rail industries. Managing the contact angle as outlined in this standard is an integral part of any wheel rail interface. Maintenance of the wheelrail interface sciencedirect. Contaminants, which refer to foreign substances applied both intentionally and unintentionally the wheel to rail interface, can make wheel rail adhesion either too high or too low and to difficult predict. Integrated wheel rail characterization through advanced monitoring and analytics fta report no. Brinksma, volgens besluit van het college voor promoties in het openbaar te verdedigen op vrijdag 19 februari 2010 om 15.
Type c wheel has a straight web that is perpendicular to the axle, as shown in c. Rail transit seminar wheel rail interaction conference. Request pdf wheelrail interface handbook many of the engineering problems of particular importance to railways arise at interfaces and the safety critical. Friction conditions at the wheel rail interface can influence the steering, traction and braking behaviour of railway vehicles, as well as damage to wheel and rail materials. Surface damage and excessive wear have been attributed to high contact stresses and creepage. The probable encouragement for adopting 62ri1 is that wheel rail interface of lowfloor, multisection trams on rigid trucks or at best, almost rigid bogies is more complex than the longproven pcc and its derivatives. The importance of the wheel rail interface to the safe operation of railways is discussed. Foster rail technologies with the assistance of and permission from sahha 2015 technical workshop, birchwood hotel 8 october, 2015. Dynamic response of wheelrail interaction at rail weld in.
The automated translations should not be considered exact and used only as an approximation of the original english language content. Ebook wheel rail interface handbook as pdf download. The wheel rail interface challenges have been highlighted and discussed and the analysis and design process required to develop an optimised wheel profile for dual operation running has been presented. Design and performance analysis of a tramtrain profile. Fundamentals of wheelrail interaction international heavy haul. Rails and wheels the wheel rail interface surfaces should be. Rail wheel interface project tampa heritage trolley. A good practice guide for managing the wheelrail interface of light rail and tramway systems this guide contains recommendations for best practice in wheel rail interface management to reduce derailment risk over the whole life of the system. Wheel rail noise considerable benefits can be gained through appropriate wheel rail interface management, including reduced defect rates, improved safety, extended wheel and rail life, improved vehicletrack interaction, reduced wheel rail noise and the development of suitable standards and maintenance procedures. Understanding the wheelrail interface part two the.
Wheels on rails an update, understanding and managing the wheel rail interface imeche seminar, london, april 2002 2002 the institution of mechanical engineers 1. Foster rail technologies with the assistance of and permission from sahha 2015 technical workshop, birchwood hotel 8. Scribd is the worlds largest social reading and publishing site. Esveld section of road and railway engineering faculty of civil engineering and geosciences, delft university of technology stevinweg 1, nl2628, cn delft. The wheel rail interface is the contact area where wheel rail interaction between wheels and rails in railways takes place. Pdf mitigating train derailments due to sharp curve and. This twopart article examines the impact of warp in the overall operating environment. Fuel consumption improvements in curves due to improved wheel and rail profile design figure 2.