Ttcis approach is to match measured rail pairs against wheels typical of the vehicles passing over, calculate the wheelrail interaction, and assess against the preferred interaction. A study on the wheel rail interaction at switch points to reduce derailments in turnouts by samet ozturk approved. Use features like bookmarks, note taking and highlighting while reading wheelrail interface handbook. Join the grabcad community today to gain access and download. Analyses of rail vehicle dynamics in support of development of the wheel rail dynamics research facility. Download it once and read it on your kindle device, pc, phones or tablets. 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. Appendix a effect of wheelrail profiles and wheelrail interaction on system performance and maintenance in transit operations unfortunately, this book cant be printed from the openbook. Article information, pdf download for research into the problem of wear. Monitoring of railwheel interaction using acoustic emission. Pdf dynamic analysis of wheelrail interaction using finite. Reasonable solution method would reduce the computational effort and improve the solution efficiency in a certain extent.
An axle box, also known as a journal box in north america, are the mechanical subassembly on each end of the axles under a railway wagon, coach or locomotive. A lot of the complexity of the wheelrail contact is brought about by the open nature of the system and the constantly varying environmental conditions in terms of, for instance, temperature, humidity and natural contaminants. Pdf dynamic analysis of wheelrail interaction using. Simulation of rail wear on the swedish light rail line. The train is modeled as a sequence of multibody massspringdamper. Study of wheelrail vibration in railways scientific. The increase in the severity of the dynamic interaction between wheel and rail. 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.
A numerical program for railway vehicletrackstructure. Some geometric features of the wheel and rail interaction and their influence on the friction path sliding distance and. This computational model requires the definition of the wheel and rail contact geometries. The contact area at each wheel tread low rail interface is approximately circular, with a typical radius of 7mm. Many of these derailments and those resulting from equipment failures are attributable to the contact forces that develop at the wheel rail interface. The data analysis software computes the contact parameters by placing each wheelset on the measured rail pair. An adaptive contact model for simulation of wheelrail impact.
A vehicletrack interaction model incorporating a 2d roll. Rail transit seminar wheel rail interaction conference. Contact and creepforce models 6 hrs hertz theory, creep phenomenon, wheelrail contact approaches, creepforce theories 5. Pdf the dynamic interaction of wheel and rail is a key problem in a railway system. Analyses of rail vehicle dynamics in support of development. The grabcad library offers millions of free cad designs, cad files, and 3d models. Loading vehicle is used to measure the dynamic rail profiles.
Wheel rail interface handbook is a onestop reference for railway engineering practitioners and academic researchers. A new wheelrail contact model for railway dynamics article pdf available in vehicle system dynamics 452. 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. Railroad vehicle dynamics indian institute of technology. It provides insight into the wheelrail issues that have a major influence on the running of a reliable, efficient, and safe railway. Analysis of wheelrail interaction using fe software. Hence, the wheelrail rolling contact has been a hot issue. Vibration of the whole system is very noteworthy in terms of the servicelife of the components, driving safety and. System dynamics of railway vehicles and track pdf free. Development of advanced computational models of railway vehicles. Way more information than you ever wanted on how to fell a tree. The maximum operating speed for realtime data analysis can now reach up to.
Rail track irregularities can be considered as one of the most important sources of loads, generated by a moving train. Fundamentals of wheelrail interaction michael roney consultant and retired chief engineer, canadian pacific dr. The computeraided design cad files and all associated content posted to this website are created, uploaded, managed and owned by third party users. Pdf analysis of wheelrail interaction for the development of a new. Tworail systems are generally advised for most applications because more favorable load distributions between the bearings can be achieved, and selfalignment is possible with most round rail bearings. Staskiewicz and others published analysis of wheelrail interaction for the development of a new tramway wheel profile. Third body separates wheel and rail surface, accommodates velocity differences and determines wheel rail friction. 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. Pdf on jan 1, 2014, traian mazilu and others published interaction between an unbalanced wheel and a discretely supported rail find, read and cite all the research you need on researchgate. Simulation of rail wear on the swedish light rail line tvarbanan. Rail and wheel geometry 6 hrs theory of curves, geometry of surfaces, rail geometry, definitions and terminology, geometric description of track, wheel geometry 4.
Staying on the rails with vehicletrack interaction. On new effects of wheelrail interaction springerlink. Wheel rail interaction call for papers trains magazine. Three types of wheels are considered with different contact stiffness and wheelplate design. Ambala cantt ludhiana amritsar mainline electric multiple unit m emu. Monitoring of railwheel interaction using acoustic emission nirav ashokkumar thakkar submitted for the degree of doctor of philosophy on completion of research in the school of engineering and physical sciences, mechanical engineering, heriotwatt university june 2009. The dynamic interaction of wheel and rail is a key problem in a railway system. This is because the wheel and rail deform very little under load, unlike a rubber. Development of a vehicletrack interaction model to predict the. Three types of wheels are considered with different contact stiffness and wheel plate design. In the darts model, the loads were introduced via hertzian springs traversing a sineshaped rail track surface, as shown in fig.
The paper is focused on the interaction between tram wheel and rail, which was. As a main part of continuously welded rail track, rail weld widely exists in highspeed railway. Influence of tribological parameters on the railway wheel. Many of these derailments and those resulting from equipment failures are attributable to the contact forces that. Modelling and simulation of dynamic wheelrail interaction. Onerail systems can be used in certain applications where envelope restrictions are tight. A steel wheel requires very little energy to roll on a steel rail. A new solution method for wheelrail rolling contact. Research into the problem of wear creating a polygonshaped.
Wheelrail dynamic interaction due to excitation of rail. Maintenance of the wheelrail interface sciencedirect. The material used for the railwheel contact is structural steel which isotropic behavior. Selecting and applying rolling element linear bearings and. 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. A bogie or railroad truck holds the wheel sets of a rail vehicle. In the multibody contact model required to solv e the problem of the wheelrail interaction. However, this range is important for wear problems, therefore more knowledge is required. Modal analysis provides a description of the finite element bridge model in modal space with a small number of degrees of freedom. Rail wheel interaction 02 friction wear free 30day. The rail steel can be assumed to have a shear yield strength of k70 ksi. The rail technology unit vehicle dynamics and the wheelrail interface evans j, iwnicki s. The interaction between the vehicle and the track is represented by an appropriate contact model.
Wheelrail interface handbook is a onestop reference for railway engineering practitioners and academic researchers. Then a general presentation of the phenomena creepage and spin that arise in the contact area between wheel and rail during rolling motion is given, as well as a survey of the contact. In addition to the searchable database, information is included on passenger rail. Study on influence of outofround highspeed railway wheels on wheelrail interaction force. The rail profiles are measured as the car moves along the track. The paper herein presents an analysis of the interaction between two wheels and a rail ballasted track due to the smallscale undulation of the rail rolling surface. Management on energy savings and sustainability railroad wheels and rails are made of high strength steel. A train wheel or rail wheel is a type of wheel specially designed for use on railway tracks.
Rail wheel interaction 02 free download as powerpoint presentation. Trains is the presenting sponsor of wheel rail interaction. Read chapter appendix a effect of wheelrail profiles and wheelrail interaction on system performance and maintenance in transit operations. The mechanical properties of the wheel and rail were chosen according to standards. Part one provides the fundamentals of contact mechanics, wear, fatigue and lubrication as well as stateoftheart research and emerging technologies related to. If you need to print pages from this book, we recommend downloading it as a pdf. This proposed model adapts the contact length, contact depth and incorporates possible partial and asymmetry of the contact due to defective wheel profile.
Dec 07, 2017 the grabcad library offers millions of free cad designs, cad files, and 3d models. Sep 30, 2014 characteristics of wheel rail dynamic interaction due to the rail corrugation in a highspeed railway are analyzed based on the theory of vehicletrack coupled dynamics in this paper. Staying on the rails with vehicletrack interaction volpe. System dynamics of railway vehicles and track pdf free download. Flange climb derailment criteria and wheelrail profile. This crossdisciplinary seminar will include presentations from experts in vehicletrack dynamics, noise and vibration, wheel rail profile design and maintenance, and friction management. Wheelrail interface handbook kindle edition by lewis, r. Jun 29, 2012 the paper is devoted to the experimental, theoretical analysis and computer simulation of influence of elastic properties of contact stiffness and wheel plate stiffness on the forces of vehicletrack interaction.
Wheelrail interaction and wear when considering wheelset flexibility the. Exemplary simulation of freight car interaction with track which posses one corrugated. Fundamentals of wheel rail interaction michael roney consultant and retired chief engineer, canadian pacific dr. Development of advanced computational models of railway. Kruse 949 summary the interaction of railway vehicles and track in the midfrequency range is not fully understood yet.
Imperfections in the wheelrail contact are one of the main sources of. Kevin oldknow chief engineer, wheelrail interface l. For analyzing the dynamic interaction problem of a train passing a railway bridge with high speed, a substructure approach is presented taking into account the influence of rail irregularities. The wheelrail interface is the contact area where wheelrail interaction between wheels and rails in railways takes place. Appendix a effect of wheelrail profiles and wheelrail interaction. A study on the wheelrail interaction at switch points to reduce derailments in turnouts by samet ozturk a thesis submitted to the faculty of the university of delaware in partial fulfillment of the requirements for the degree of master of civil engineering spring 2014. By bob tuzik for three years running, new york city transit and the federal transit administration have kicked off the annual wheelrail interaction rail transit conference with discussion of the nyctfta research project to explore integrated wheelrail analytics on mtanycts no.
Professor in charge of thesis on behalf of the advisory committee approved. The 24th annual wheel rail interaction conference will be held april 30 to may 3, 2018, at the crowne plaza chicago ohare hotel, in rosemont, ill. By jeff tuzik for over 20 years, the wheelrail interaction conferences have brought together railway industry professionals, researchers and suppliers to share their expertise in the field of wheelrail interaction. Wheelrail interaction analysis tanel telliskivi tritammk 2003. The paper is devoted to the experimental, theoretical analysis and computer simulation of influence of elastic properties of contact stiffness and wheelplate stiffness on the forces of vehicletrack interaction. Thus, the passage of a complete wagon 4 axles, 8 wheels is. All 3d models polygonal only cad only free only sort by.
Interface journal the journal of wheelrail interaction. It contains an overview of industrial practice from several different regions of the world, illustrating the challenges in managing the wheelrail interface in a variety of environments and circumstances. Foster rail technologies with the assistance of and permission from sahha 2015 technical workshop, birchwood hotel 8 october, 2015. Modeling of dynamic trainbridge interaction in highspeed. This work reports a 3d finite element model of wheel. The stressstrain of thin multilayered coatings covered the surface of the rail is studied near the region of side contact in turning motion. Together with the rapid development of highspeed railways, extensive research into railway technologies is compulsory, especially on the aspect of dynamic interactions between vehicle and railway line, in order to guarantee the operational security of vehicles at high speed and improve the passengers comfort. It is assumed that reduced rail profile degradation will reduce the life cycle cost lcc of turnouts. Foster rail technologies with the assistance of and permission from sahha 2015 technical workshop, birchwood hotel 8.
Wheel rail friction depends on the shear properties composition of the third body layer. For numeric simulation, the transient wheelrail rolling contact in railway system is a very complex and timeconsuming process. Yes, the kuju and then rsdl rail simulator developers manuals, many railworks users still have copies of they could let you have. The rail transit seminar is devoted to examining wheel rail and vehicletrack interaction on light rail and subway operations. Influences of the corrugation wavelength and depth on the wheel rail dynamic performance are investigated. Third body at wheel rail contact third body is made up of iron oxides, sands, wet paste, leaves etc. Simulation of rail wear on the swedish light rail line tvarbanan 5 2 methodology this chapter first describes the proposed rail wear simulation procedure.
Pdf a new wheelrail contact model for railway dynamics. Pdf wheelrail interaction due to the polygonal wheel. P x z v f n f n r s w l s kp cp m sl kb b ks cs m w m w kw cw ei, kga, m figure 3. At first, the wheel and the rail with sparse meshes. Monobloc wheels do not have encircling tires, while resilient rail wheels have. Jan 18, 2017 by jeff tuzik for over 20 years, the wheelrail interaction conferences have brought together railway industry professionals, researchers and suppliers to share their expertise in the field of wheelrail interaction. Track and infrastructure failure is the second leading cause of train derailments in the united states.