The development of mathematical models and their applications to dynamic analyses and the design of railway vehicles are discussed. 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. If you need to print pages from this book, we recommend downloading it as a pdf. The track structure types include ballasted track, direct fixation ballastless track, and embedded track. Delegates to the th annual wheelrail interaction seminar presented by interface journaland advanced rail management heard it time and again over the course of the seminar. Analysis of wheelrail interaction using fe software. Reducing wheelrail interaction forces and roughness growth by application of rail dampers. Railway applications track switches and crossings for vignole rails part 3.
For rail stress and relative displacement calculations a fixed embankment spring can be conservatively used for total displacement checks or for calculating railstructure interaction forces forces imposed on the bridge by a continuously welded rail compare fixed condition and a lower bound embankment stiffness. 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. Wheel rail interface handbook pdf free download epdf. A new wheelrail contact model for railway dynamics. Read chapter appendix a effect of wheelrail profiles and wheelrail interaction on system performance and maintenance in transit operations. Interface journal the journal of wheelrail interaction. Current methods are presented for calculating contact geometry, defining the wheelrail kinematic. Dynamics of railway vehicle systems offers a comprehensive and analytical treatment of the rail wheel interaction problem and its effect on vehicle dynamics. The vibration source is the roughness on the wheel and rail contact surfaces which forms a relative displacement excitation in the vertical direction. Pdf vehicle dynamics and the wheelrail interface researchgate. Three types of wheels are considered with different contact stiffness and wheel plate design. 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.
Trbs transit cooperative research program tcrp report 155. Chapter track structure design table of contents 4. A linear wheelcrossing interaction model bjorn a palsson, 2018. Trains is the presenting sponsor of wheel rail interaction. Appendix a effect of wheel rail profiles and wheel rail interaction on system performance and maintenance in transit operations unfortunately, this book cant be printed from the openbook. Metallurgy, wheel rail profile design and maintenance. On new effects of wheelrail interaction springerlink. The frequency range of interest for rolling noise is generally 50 to 5000 hz. 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. Influences of the corrugation wavelength and depth on the wheel rail. Wheelrail interaction archives page 3 of 4 interface. The importance of wheelrail interface on energy savings. The other question is how this bouncing influences the pressure forces between the wheel and the rail, and how it influences the stress distribution within the. The dynamic interaction of wheel and rail is a key problem in a railway system.
A timedomain model can be used to study nonlinear interaction between the wheel and rail. Progress on wheelrail dynamic performance of railway. Since 1994 we have hosted speakers and attendees from around the globe, bringing focus and understanding to the critical area of wheelrail interaction. 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. Methods of simulation of railway wheelset dynamics taking. Unfortunately, this book cant be printed from the openbook. The wri is time and locationvarying, which makes th. In this linear model, the vertical contact force was assumed to depend linearly on the.
A study on the wheelrail interaction at switch points to reduce derailments in turnouts by samet ozturk approved. Foster rail technologies with the assistance of and permission from sahha 2015 technical workshop, birchwood hotel 8. Good agreement was alsoobtained in regard to form change of the rollers. In the very beginning, let us consider results of measurement of wheel stiffness, wheel plate stiffness, and wheel rail contact stiffness obtained in the range 0100 kn done on the special test stand shown in. A study is presented of the nonlinear dynamic interaction between a wheel and rail, excited by roughness on the wheel and rail contact surfaces. On new effects of wheel rail interaction by roman bogacz and robert konowrocki download pdf 1 mb. Foster rail technologies with the assistance of and permission from sahha 2015 technical workshop, birchwood hotel 8 october, 2015. Wheelrail nonlinear interaction with coupling between. Computer simulation of the interaction between a wheel and a. A study on the wheel rail interaction at switch points to reduce derailments in turnouts. Wheelrail interaction archives page 2 of 4 interface journal. A novel method using wheel vibration acceleration is proposed in this paper, in which ensemble empirical mode decomposition eemd is employed to. Pdf a new wheelrail contact model for railway dynamics. Detection of rail corrugation wavelength and depth is absolutely essential for maintenance and safety.
Vehicletrack interaction in railway operation is highly influenced by. The wheel rail interactions with coupling between vertical and lateral directions have been studied by thompson 3, 10 using a frequencydomain model. Appendix a effect of wheelrail profiles and wheelrail. The wheelrail interface is the contact area where wheelrail interaction between wheels and. Railwheel interaction and its influence on rail and. Analysis of wheelrail interaction using fe software sciencedirect. Calculation of wheel rail contact geometry calculation principle the calculation of wheel rail contact geometry is used to analyze the influence of the profile wear on the figure 2. The rolling noise is generated by the contact force the wheel, and the rail, exchange each other during relative motion. As an excitation source of the train vibration, rail surface roughness has significant impact on the wheel rail interaction. The purpose of this model is to demonstrate the fundamental constraints imposed on a. Wheelrail contact behaviors in the switch have been studied with a number of laboratory experiments and numerical procedures. The wheelrail interface is the contact area where wheelrail interaction between wheels and rails in railways takes place.
Rail wheel contact interaction rail wheel interaction involves rolling and sliding, the contact surface between the two elements varies from one position to another, resulting a sinuous movement on the horizontal plane with dynamic load on the rail due to the centrifugal force or to the rolling stock movement. No part of this site may be reproduced or used without prior written permission from wheel rail seminars. But among them, major categories consistently emerge. Pdf dynamic analysis of wheelrail interaction using. Vehicle steering and curving forces the wheel set 30. Rail transit seminar wheel rail interaction conference 2017. Kevin oldknow chief engineer, wheel rail interface l. A moving irregularity model is used to represent the wheel rail interaction process in the timedomain. Wheel rail interface handbook is a onestop reference for railway engineering practitioners and academic researchers. 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. Using the combined interaction model with this relative displacement excitation, the wheel rail interactions with coupling between the vertical and lateral vibrations are simulated.
Wheelrail dynamic interaction due to excitation of rail. 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. This work reports a 3d finite element model of wheel rail rolling contact which can simulate dynamic wheel rail interaction at arbitrary contact geometry up to 400 kmh. Rail corrugation detection of highspeed railway using wheel. Reducing wheelrail interaction forces and roughness growth by.
Introduction to railroad track structural design don uzarski, ph. Vibration of the whole system is very noteworthy in terms of the servicelife of the components, driving safety and. Knowledge of wheel rail interaction is essential for anyone involved in the. The wheel rail interaction short course will develop an appreciation of the multidisciplinary nature of the technology that substantially adds to the bottom line of any railway business. 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. Mechanical engineering 733 january 2011 with 236 reads how we measure reads.
Metallurgy, wheelrail profile design and maintenance. Archived from the original pdf on february 1, 2014. This paper presents the derivation of a linear model for wheelrail interaction kinematics at railway crossings. Special issue robert konowrocki on new effects of wheel. The wheelrail interface is the contact area where wheel rail interaction between wheels and rails in railways takes place. Wheel rail interaction based on roughness calculation. Newton and clark 5 calculated the wheel rail interaction forces caused by wheel flats using a timedomain model in which the linear wheel vehicle and track models interact through a nonlinear contact stiffness.
Better understanding of wheel rail interfaces is therefore critical to improving the capacity, reliability and safety of the railway system. 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. The threedimensional elastic frictional finite element model of the wheel rail interaction is put forward to investigate effect of the curve radius and superelevation on the contact stress and. The presence of a train is detected by the electrical connection between the rails, provided by the wheels and the axles of the train wheel to rail shunting. Kropp chalmers university of technology, division of applied acoustics, se41296 gothenburg. 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 wheel rail analytics on mtanycts no. Only by knowing the rules of wheel rail dynamic interaction deeply, can it be likely to minimize the wheel rail dynamic interaction and achieve optimum design of dynamic performance matching between the vehicle and track. The importance of wheelrail interface management on energy savings and sustainability railroad wheels and rails are made of high strength steel. Principles course wheel rail interaction conference 2017. A fast timedomain model for wheelrail interaction demonstrated for the case of impact forces caused by wheel ats a. Rail wheel interaction indian railways institute of. Microstructure evolution in pearlitic rail steel due to rail. 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.
In order to study the effect of rail roughness on the wheel rail vibration load, the wheel rail interaction model is established based on excitation of rail surface roughness in this paper. Visual nastran for windows created the remaining fe grid of the rail head. In thefullscale simulations, a twopoint contact was analysed wherethe differences between the contacts on rail head to wheeltread and rail edge to wheel flange can be attributed primarilyto the relative velocity differences in regard to bothmagnitude and direction. Olofssoncrc press boca raton boston new york washington, dc. 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. Fundamentals of wheel rail interaction michael roney consultant and retired chief engineer, canadian pacific dr. Nucars wheelrail interaction calculations permit the user to explore the effects of profile shapes on wheelrail forces, wheelrail wear, and vehicle dynamic performance. Wheelrail interaction archives page 2 of 4 interface. Exemplary simulation of freight car interaction with track which posses one corrugated. Wheelrail interaction due to the polygonal wheel article pdf available in upb scientific bulletin, series d. Track design handbook for light rail transit, second edition. 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. This crossdisciplinary seminar will include presentations from experts in vehicletrack dynamics, noise and vibration, wheel rail profile design and maintenance, and friction management. Dynamic response of wheelrail interaction at rail weld in.
Timedomain models, incorporating the nonlinearities in the contact zone, have been used by, for example, clark et al 5 and. And, of course, you cant optimize wheel rail interaction if you cant measure it. This model is employed to investigate dynamic response of wheel rail interaction at theoretical and measured rail weld, including wheel rail force and axlebox acceleration. Fundamentals of wheelrail interaction michael roney consultant and retired chief engineer, canadian pacific dr.
Wheelrail impact and the dynamic forces at discrete supports of. Pdf dynamic analysis of wheelrail interaction using finite. Wheel rail interaction call for papers trains magazine. By bob tuzik july, 2007 youve heard it before, youll hear it again. Requirements for wheel rail interaction a description is not available for this item. Good qualitative agreement was found between the simulated wear rate and the fullscale test results at different contact conditions. Rail corrugation often occurs on the highspeed railway, which will affect ride comfort and even the train operation safety in severe condition. Ambala cantt ludhiana amritsar mainline electric multiple unit m emu. Track design handbook for light rail transit, second edition provides guidelines and descriptions for the design of various common types of light rail transit lrt track. Wheelrail nonlinear interactions with coupling between.
A practical wheelrail interaction element for modeling. 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. Study on wheelrail interaction based on rail roughness jve. Analysis of wheelrail interaction for the development of a new tramway wheel profile. Plasticity in wheelrail contact and its implications on vehicletrack. The rail transit seminar is devoted to examining wheel rail and vehicletrack interaction on light rail and subway operations. Appendix a effect of wheelrail profiles and wheelrail interaction.
Modelling and simulation of dynamic wheelrail interaction using a. Pdf effect of periodicity of railway track and wheel. Influences of the corrugation wavelength and depth on the wheel rail dynamic performance are investigated. The interaction force between wheel and rail is generated by their roughness. Interaction between moving vehicles and railway track at high speed prof. Pdf analysis of wheelrail interaction for the development of a new. Effects of profile wear on wheelrail contact conditions and. A study on the wheelrail interaction at switch points to.
Microstructure evolution in pearlitic rail steel due to rail wheel interaction. A novel practical element is presented for simulating the vertical wheel rail interaction wri of vehicletrackbridge vtb coupling systems. En 2323 august 29, 2003 railway applications track switches and crossings part 3. Pdf wheelrail interaction due to the polygonal wheel. In the multibody contact model required to solv e the problem of the wheel rail interaction. On new effects of wheelrail interaction by roman bogacz and robert konowrocki download pdf 1 mb.
Wheelrail interface handbook is a onestop reference for railway engineering practitioners and academic researchers. However, this is not the only function that track circuits perform in a railway signalling system because the detection. Rail transport d2s international jules vandenbemptlaan 71 3001 heverlee. This article is distributed under the terms of the creative commons attribution license which permits any use, distribution, and reproduction in any medium, provided the original authors and the source are credited. Track design handbook for light rail transit, second.
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