Wheel rail interface handbook is a onestop reference for railway engineering practitioners and academic researchers. Rail timetable information data feed interface specification. Rail wheel interface rail wheel interface systems focus on understanding the dynamic interaction between the rail wheel and the rail while the vehicle is in motion. Third body at wheel rail contact third body is made up of iron oxides, sands, wet paste, leaves etc. Aar manual of standards and recommended practices wheels and axles m107m208 7. Pdf vehicle dynamics and the wheelrail interface researchgate. Rs clare advanced curved rail lubrication duration. The greater the variation in horizontal movement, the greater the risk of corrugation. Balancing the wheelrail equation and optimizing interaction can. Grinders with as few as four modules can be used for special purpose work, such as grinding of switch.
Problem of wheel rail profiles design exists for many years and different approaches have been developed to obtain satisfactory wheel rail profile combinations. The current paper presents the analysis of rcf damage initiation and stress distribution at the wheelrail interface at different directions. The wheelrail interfacesome recent accidents smith. Some aspects of the history of rails and wheels are introduced. Managing the wheel rail interface by modifying track gage, rail profiles, elevation, fastening systems and tor friction control can lower lateral forces. The focus is on safety improvement, maintenance and. When the elastic fasteners were installed on the high rail and the gauge was tightened, lateral forces increased a third from the 10 to 15kip range to the 12 to 23kip range. Appropriate design of the wheelrail interface, with attention to these factors, can greatly reduce maintenance requirements. Abnormal wheel motion patterns can be caused because of poor rail profile or poor track geometry leading to damage to both wheels as well as the rails.
The possible future rail and road status shall be taken into consideration in the barrier selection process to accommodate future requirements. Understanding the wheelrail interface part one the. A facility to capture raw transducer andor track geometry data to disc and to replay. Rail grinding and its impact on the wear of wheels and.
Ts2015 raildriver interface program this is the main program for the raildriver to communicate with ts2015. This book is a onestop reference for railway engineering practitioners and academic researchers. Tools and techniques for optimizing the wheelrail interface. The interface between the wheel and the rail is a specialist subject with continual. 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. Wheelrail interface handbook woodhead publishing in. 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. Rail wheel interaction indian railways institute of. Zeta 900 kings highway north, suite 208 cherry hill, nj 08034 phone. Causes of rail cant and controlling cant through wheel. Understanding the wheelrail interface part two the. Wheelrail interaction analysis tanel telliskivi tritammk 2003. Kevin oldknow chief engineer, wheel rail interface l.
Open a flowchart file click the last button to load an existing flowchart. Recommend modifications to wheel maintenance procedures 9. Archived from the original pdf on february 1, 2014. Wheel rail profiles and vehicle steering behavior are such that the curve can be considered mild the contact area at each wheel tread low rail interface is approximately circular, with a typical radius of 7mm. Railway and rail transit track infrastructure and components. Reducing friction levels between the rail gauge face and wheel flange is important in reducing wear rates in curved track. The web configuration of the wheels for domestic services is classified into three typestype a, type b, and type cas shown in fig. The following video shows automated measurement of distance between the wheel flange and the edge of the rail. Maintenance of the wheelrail interface sciencedirect.
The importance of the wheel rail interface to the safe operation of railways is discussed. Ab this article describes the wheelrail interaction 07 seminar held in chicago, and discusses various ways in which safety, fuel efficiency and service life can be improved by focusing on the dimesized area where a trains wheel meets the rail. Rail wheel interface analysis is also of importance at switch and crossing areas where the following measurements can be correlated with the quality. The cracking initiation and crack propagation processes that occur in rails as a result of contact between wheels and rails are.
A single source for authoritative and uptodate information, this book discusses the safety critical role of the wheel rail interface and the challenges it poses. Aug 24, 2015 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. A steel wheel requires very little energy to roll on a steel rail. Rail wheel interface project tampa heritage trolley. 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. Adhesion traction is the friction between the drive wheels and the steel rail. The wheelrail interface is the contact area where wheelrail interaction between wheels and rails in railways takes place. This report documents a multiyear, multimember collaborative research effort. The wheelrail interface is the contact area where wheelrail interaction between wheels and. Chemistry of black leaf films synthesised using rail steels and their influence on the low friction mechanism. But there is much info in my pinned at the top thread on the subject and searching youtube will find more on individual subjects of creating for railworks. Part 2 see part 1 by jeff tuzik wheelrail interaction impacts virtually every aspect of railroading, including operational safety and efficiency, the effectiveness of vehicle and track maintenance and maintenance planning. Implementing optimized wheel and rail profiles on the. In addition to the searchable database, information is included on passenger rail.
This contact is the critical point at high speeds and in cases of heavy freight trains with high axle load, due to the high contact forces and the dynamics, but it is also responsible for noise emissions and wear figure 44. Third body separates wheel and rail surface, accommodates velocity differences and determines wheel rail friction. Pdf wheel rail interface handbook download full pdf. This form builds on existing derailment investigations procedures used by commuter agencies and intercity passenger railroads. The wheelrail interface is the contact area where wheel rail interaction between wheels and rails in railways takes place. The wheel profiles were sampled from a pool of 120 profiles measured on 120. Railway system operational performance, capacity and efficiency. Fundamentals of wheelrail interaction michael roney consultant and retired chief engineer, canadian pacific dr.
Wheelrail interface handbook is a onestop reference for railway engineering practitioners and academic researchers. Evaluate modifications to maintenance procedures to improve wheel rail interaction phase 3 7. The wheel rail interface anatomy and key terminology. It gives details of improvements in wheel and rail materials and profiles. The two fundamental components in maintenance of the wheelrail interface are control of friction and control of the wheel and rail profiles. A strong conicitycharacterizes a contact capable of selforienting the axle, but it risks making the bogie and therefore the vehicle unstable. Rail wheel contact zone 1 sq cm exposed to dirt, high humidity, leaves, rain. Wheel rail friction depends on the shear properties composition of the third body layer. Therefore, the subject of the present article is a geometrical parameter of dual gauge track, i. Signalling is one part of a project that is often contracted separately, as work on this.
The wheel rail contact determines the capabilities of the railway system. An adhesion railway relies on adhesion traction to move the train. Reducing friction levels between the rail gauge face and wheel flange is. Vehicle dynamics and the wheelrail interface by jerry evans, aea technology rail simon iwnicki, manchester metropolitan university mmu from. Timetable information data feed interface specification 2. Network rails high marnham test track have been awarded a. Analysis of rolling contact fatigue damage initiation at. This article discusses the consequences of splitting multidisciplinary rail infrastructure projects into multiple design andor construction contracts. Elastic fasteners appear capable of handling high lateral forces. Wheel rail interface handbook will be a onestop reference for railway engineering practitioners and academic researchers, providing 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. Ensuring they have procedures for ensuring that changes that may affect the safety of railway operations are identified and managed, including consultation with all affected parties. Rail wheel interface analysis rail vision europe ltd. The management of wear and rolling contact fatigue is described.
The cracking initiation and crack propagation processes that occur in rails as a result of contact between wheels and rails are described. Hatfield memorial lecture 2007 railways and materials. Pdf traction is influenced greatly by the climatic conditions, especially under. The importance of wheelrail interface management on energy savings and sustainability railroad wheels and rails are made of high strength steel. Lubrication practices and tests using friction modifiers are covered. Each cad and any associated text, image or data is in no way sponsored by or affiliated with any company, organization or realworld item, product, or good it may purport to portray. This advantage came with a price, that of the relatively low coef. Jul 31, 2014 discussion forum interfaces wheelrail wheelrail. Integrated wheelrail characterization through advanced. Grinders used on mixedtraffic railway systems typically have at least 32 grinding modules, e. Starting with the general worn shape of the amfleet and acela wheels, nrcc. The balfour beatty rail digital track geometry system is a combined. This chapter describes the extensive us experience in development of the wheelrail interface. Recommended practice for derailment investigation reports 1.
Ab this article describes the wheel rail interaction 07 seminar held in chicago, and discusses various ways in which safety, fuel efficiency and service life can be improved by focusing on the dimesized area where a trains wheel meets the rail. Pdf presented at wheels on rails an update, seminar of the institution of mechanical engineers, london, april 2002. Type c wheel has a straight web that is perpendicular to the axle, as shown in c. If you have already used a hardware interface on this computer, then an additional option will appear allowing you to directly reselect that interface. The flowchart file contains information specifying which mimic andor interface it uses. Also included is a comprehensive set of drawings for the rail and wheel tread profiles currently in use as is a summary of general observations made throughout the work. Buy wheelrail interface handbook woodhead publishing in mechanical engineering by r.
Car repair billing crb user guide railinc corporation. Interface management on rail infrastructure projects. Wheel rail interface monash institute of railway technology. It is possible to find an optimal combination of wheel and rail profile when dealing with closed railway system, i. 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. Cut spikes do not provide sufficient vertical rail restraint when subjected to high lateral forces.
Yes, the kuju and then rsdl rail simulator developers manuals, many railworks users still have copies of they could let you have. Wheels on rails an update, understanding and managing the wheelrail interface imeche seminar, london, april 2002 2002 the institution of mechanical engineers 1. It is sensitive to the installation of the rail, to wear, to the gauge. Foster rail technologies with the assistance of and permission from sahha 2015 technical workshop, birchwood hotel 8 october, 2015.
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. Jun 06, 2015 the wheel rail interface track railway. Interface journal the journal of wheelrail interaction. It provides the fundamentals of contact mechanics, wear, fatigue, and lubrication as well as stateoftheart research and emerging technologies. 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.
The minimum freecurve radius is the point at which railway and tramway dynamics become separate technologies. 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. Wheels on rails an update, understanding and managing the wheel rail interface imeche seminar, london, april 2002 2002 the institution of mechanical engineers 1. The conicityis a function of the lateral position of the axle in the track, and thus of the wheel relative to the rail. Engineering consultancy frazernash is providing safety validation, verifying whether the system can o. Rolling contact fatigue rcf results in damages on the railhead surface and wheel tread. The importance of wheelrail interface on energy savings. The low adhesion problem due to leaf contamination in the wheel rail contact. 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. Aug 24, 2015 to prevent derailment it is then necessary to install an additional rail, a check rail, alongside the low rail to transmit a percentage of lateral thrust via the low wheel flangeback. Revised november 2012 5 crb user guide welcome to car repair billing crb the purpose of this document is to provide step bystep instructions for using the billing repair. Managing wheelrail performance on amtraks northeast. Recommended practice for derailment investigation reports. Causes of rail cant and controlling cant through wheelrail.
Wolf july, 2007 much has been written and said about the need to optimize the interface between the wheel and rail, but with the growth of heavy axle load traffic, the mandate for optimum performance is greater than ever. The scatter in vehicle input data will lead to a distribution of wheel rail contact positions wider running band. The rail steel can be assumed to have a shear yield strength of k70 ksi. View enhanced pdf access article on wiley online library html view download pdf for offline viewing.