The simulation results shows that the maximum stress. Since the early 1970s, numerical simulations of the dynamic behavior of rail vehicles and the interaction between vehicle and track have been performed. The importance of wheelrail interface on energy savings. Through mathematical analysis and practical examples, it builds a deep and functional understanding of the wheelrail interface, suspension and suspension component design, simulation and testing of electrical and mechanical systems, interaction with surrounding infrastructure, and noise and vibration. Journal of computational and nonlinear dynamics, vol. The guidance of railway vehicles is determined by a complex interaction between the wheels and rails, which requires a detailed characterization of the contact mechanism in order to permit a correct analysis of the dynamic behavior. The importance of wheelrail interface management on energy savings and sustainability railroad wheels and rails are made of high strength steel. Monash irt and jakarta mrt partnership on indonesian railway projects recycled plastic is the new material for heritage railway sleepers. Introducing the uks first tramtrain railway technology. This paper presents an analysis of the transient wheelrail frictional rolling impact contact using an explicit finite element model of the dynamic interaction between the wheel and fbfc. The characteristics of the wheelrail interaction are analysed in both time and frequency domains. A dynamic wheelrail impact analysis of railway track. Analysis of wheelrail interaction for the development of.
It contains an introduction and the following papers. May 12, 2017 the whole finite element model for wheelrail rolling contact was built using commercial software hypermesh, which includes two wheels the one with a fresh flat, one axle and two rails. As a result, the railways are subjected to additional loads which produce a higher level of strains and stresses. Without having an appropriate understanding of the wheelrail interaction, the essential safety analysis of stability and derailment or. 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. A part of wheel motor consists of a driving motor, a driving a part of rail motor consists of a braking motor, a braking motor axis, torque sensor, an encoder and rail specimens. Dynamic analysis of wheelrail interaction using finite element method.
Analysis of dynamic wheelrail interaction caused by measured. The solution of frictional wheelrail rolling contact with a 3d. The wheel rail contact has been of crucial interest to the railway engineers. The mathematical and numerical studies were done by using quasihertz and fe analysis to analyze the impact of the interacting wheel and rail profiles on the distribution of contact zones and stresses. Causes of rail cant and controlling cant through wheel. An adaptive contact model for simulation of wheelrail. The railway transportation system is nowadays one of the most important systems for land transport because its increased load carrying capacity, high speed, low costs, connectivity and ecologic features.
Overview 2 part 1 the wheel rail interface anatomy and key terminology. Dynamic analysis of interaction between vehicle wheel with a metal protuberance and rail marijonas bogdevicius1. The wheelrail contact is modeled using nonlinear hertzian contact theory. Part 1 3 the wheel rail interface anatomy and key terminology the contact patch and contact pressures creepageand traction forces. 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. Performance analysis of wheel and rail contact by nature of. Dynamic analysis of wheelrail interaction using finite element. Without having an appropriate understanding of the wheelrail interaction, the essential safety analysis of stability and derailment or the ride comfort analysis are incomplete 2.
The wheel rail interaction conference offers one of the best educational, networking and professional development values in the industry. The rolling contact of a wheel on a rail is the basis of many railwheel. The wheelrail interface is the contact area where wheelrail interaction between wheels and rails in railways takes place. Trains is the presenting sponsor of wheel rail interaction. In 2012, the rail technology unit transferred to the university of huddersfield to form a new group specialising. The main part of the finite element modeling involves the steadystate dynamic analysis, in which receptance functions were obtained and used as the criterion for evaluating the dynamic properties of track components. Nonlinear trainbridge lateral interaction using a simplified wheelrail contact method within a finite element framework. A new wheelrail contact model for railway dynamics.
Wheel rail interface monash institute of railway technology. Problem of wheelrail profiles design exists for many years and different approaches have been developed to obtain satisfactory wheelrail profile combinations. A new solution method for wheelrail rolling contact. 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. Moreover, the effect of contact forces and contact stresses on the deformation of rolling wheels and rails were also evaluated. Their fe model consists of a part of the wheel and the rail with insulating. Pablo antolin, jose maria goicolea, javier oliva, miguel angel astiz.
The results obtained from fe analysis were combined with the critical plane approach and. Application of sensitivity analysis in design of characteristics of damping joints in locomotive running gear jaromr zelenka, martin kohout, tom. The aim of this paper is to study the influence of rail flexibility when a wheelrail wear prediction model that computes the material loss based on an energy approach is used. The data analysis software computes the contact parameters by placing each wheelset on the measured rail pair. The solid model of railwheel contact model is created in catia v5. Pdf stress analysis on rail wheel contact semantic scholar.
Considerable benefits can be gained through appropriate wheelrail interface management, including reduced defect rates, improved safety, extended wheel and rail life, improved vehicletrack interaction, reduced wheelrail noise and the development of suitable standards and maintenance procedures. Effect of wheelrail interface parameters on contact stability in. This paper is a revised and expanded version of an article entitled, contact stress analysis in wheelrail by hertzian method and finite element method presented in national conference on recent advancements in mechanical engineering held at north east regional institute of science and technology, arunachal pradesh. Wheelrail interaction is one of the most important research topics in railway engineering. Hence, the wheelrail rolling contact has been a hot issue. Analysis of wheel rail interaction using fe software has been studied by sladkowski and sitarz 4. Huimin wu transportation test center, inc, pueblo, co number of words. Analysis of wheelrail interaction using fe software aleksander.
Interface journal the journal of wheelrail interaction. The paper is focused on the interaction between tram wheel and rail, which was. Modelling and simulation of dynamic wheelrail interaction using a roller rig a anyakwo, c pislaru, a ball and f gu centre for diagnostic engineering, university of huddersfield, queensgate, huddersfield hd 1 3dh, united kingdom email. The irrs work is split between research and consultancy projects.
Analysis of dynamic wheelrail interaction caused by. The issue of the wheelrail interaction may be solved in two different waysusing either the model of a moving irregularity between a stationary wheel and rail, or the model of a moving wheel along the rail. With the development of modern computing techniques and the. Modelling and simulation of dynamic wheelrail interaction. 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. Selected european wheel profiles were investigated on track with. This study combines structural failure analysis, finite element analysis, fracture mechanics, and reliability analysis methods to develop a new methodology to analyze and simulate railroad wheel failure. Wheel rail interaction call for papers trains magazine. Study on the adhesion characteristic between wheel and.
Performance analysis of wheel and rail contact by nature of material characteristics. Modelling and simulation of dynamic wheel rail interaction using a roller rig a anyakwo, c pislaru, a ball and f gu centre for diagnostic engineering, university of huddersfield, queensgate, huddersfield hd 1 3dh, united kingdom email. One of the most important questions relating to the exploitation. The maximum operating speed for realtime data analysis can now reach up to. Sathish gandhi department of mechanical engineering, university college of engineering nagercoil, anna university. The analytical formulation is based on timoshenkos approach and finite element method fem based simulation of the problems is undertaken. The work is presented in the five appended papers that are summarised below. We are specialists in wheelrail interaction, and much of our work employs computer modelling to simulate the dynamic behaviour of railway vehicles and what occurs in the contact patch between the wheel and the rail. Performance analysis of wheel and rail contact by nature of material characteristics a contact mechanics approach v. Since the early 1970s, there have been numerical simulations of the behaviour of rail vehicles and of the interactions between vehicles and track. Olofsson, contact mechanics analysis of measured wheelrail profiles using the finite element method journal of rail and rapid transit, proc. The wheel has a s1002cn tread and the radius of 430 mm, while. Rail transit seminar wheel rail interaction conference 2017.
Prediction of fatigue crack initiation life in railheads using finite. This allows to compute vehicle stability and inspect derailments using kalkers full theory. The model of the moving irregularity is much easier to use and it is currently utilized for the frequencydomain analysis 5. This proposed model adapts the contact length, contact depth and incorporates possible partial and asymmetry of the contact due to defective wheel profile. Modeling of subsurface cracking in railroad wheels 2. With these tools, distribution of contact zones, contact stress and contact pressure for different configuration of the wheel and rail profiles are obtained. Calculations and analysed results, obtained by using the newly developed method, when a wheel defect has a metal protuberance, are presented in this work. Analysis of wheelrail interaction using fe software has been studied by sladkowski and sitarz 4.
For numeric simulation, the transient wheelrail rolling contact in railway system is a very complex and timeconsuming process. Appraisal of contact stresses, surface cracks, and plastic deformations in rails and wheels has always been an important issue in mechanical and railway engineering because of two main reasons. Kevin oldknow chief engineer, wheelrail interface l. The whole finite element model for wheelrail rolling contact was built using commercial software hypermesh, which includes two wheels the one with a fresh flat, one axle and two rails. The wheel has a s1002cn tread and the radius of 430 mm, while the rail is the 60 kgm steel rail with a base slope of 1. Fundamentals of wheelrail interaction michael roney consultant and retired chief engineer, canadian pacific dr. The stressstrain of thin multilayered coatings covered the surface of the rail is studied near the region of side contact in turning motion. Finite elements analysis of the railwheel rolling contact. Foster rail technologies with the assistance of and permission from sahha 2015 technical workshop, birchwood hotel 8. Kropp chalmers university of technology, division of applied acoustics, se41296 gothenburg. Improving performance, finite element analysis, wheelrail interaction, coupling strategy. A fast timedomain model for wheelrail interaction demonstrated for the case of impact forces caused by wheel ats a. The rail wheel assembly is assumed to operate under the designed load. Technology unit at manchester metropolitan university, where he specialised in railway vehicle dynamic modelling and wheelrail interaction.
And, of course, you cant optimize wheelrail interaction if you cant measure it. Contact mechanics analysis of measured wheel rail profiles using the finite element method all machine elements working in contact are subject to various degradation mechanisms. Ansys software is utilized with the purpose of simulating the system. Handbook of railway vehicle dynamics simon iwnicki.
Investigation on fatigue life of railwheel assembly using finite. The finite element method analysis was carried out in abaqus software. Dynamic explicit analysis has been used for the simulation of a moving load, and the train speed effect has been studied. If you need to print pages from this book, we recommend downloading it as a pdf. Appendix a effect of wheelrail profiles and wheelrail. The wheelrail wear model used in this investigation is a simplified combined wear hypothesis that is based on the frictional energy loss in the contact patch. Stress analysis can be done using analytical methods, experimental methods, and using tools like.
This study adopts measured wheel geometry and an elasticplastic material model for the simulations to provide an comprehensive understanding of the transient. Liu, xiaoyuan, zhai, wanming and bruni, stefano 20 analysis of dynamic wheelrail interaction caused by measured outofround railway wheels. Handbook of railway vehicle dynamics simon iwnicki download. Pdf analysis of wheelrail interaction for the development of a new.
The contact addon to gensys is fully integrated in gensys, allowing to incorporate detailed wheelrail contact analysis in various vehicle dynamics scenarios. Performance analysis of wheel and rail contact by nature. The quasihertz method as well as a finite element fe method were included as basis of mathematical simulation. Causes of rail cant and controlling cant through wheelrail interface management brad kerchof norfolk southern railway, roanoke, va dr. The wheelrail contact has been of crucial interest to the railway engineers. Analysis of rail wheel contact stresses by using ansys ansys is finite element analysis software which enables engineers to perform the following tasks. The mesh and mesh density of wheelrail finite element models. Stecco, university of florence, italy abstract the numerical simulation of system dynamics is today a standard in the design. A vehicletrack interaction model incorporating a 2d roll. Reasonable solution method would reduce the computational effort and improve the solution efficiency in a certain extent. Determination of wheelrail contact points in the simulation. A robust finite element analysis of the railwheel rolling contact.
To investigate wheelrail interaction resulting from actual outofround wheels, wheel radial irregularities are measured from chinese 25g passenger trains. The dynamic model of the vehicle body, a freight bogie and the truck systems of uic60 rail were modelled and analysed using an explicit method with a commercial fe software considering the real. Calculations and analysed results, obtained by using the newly. Numerical analysis for investigating wheelrail impact. Foster rail technologies with the assistance of and permission from sahha 2015 technical workshop, birchwood hotel 8 october, 2015. 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. Without having an appropriate understanding of the wheel rail interaction, the essential safety analysis of stability and derailment or the ride comfort analysis are incomplete 2. Analysis of wheelrail interaction using fe software. Wheel rail interface rail adhesion from wikipedia, the free encyclopedia. Analysis of wheel rail interaction using fe software 1. Determination of wheelrail contact points in the simulation of railway vehicle dynamics j.
This research is divided into four objectives as follows. To simulate the 3d contact interaction analysis of railwheel, the. Wheelrail interaction, explicit finite element model, contact. The measured irregularities are utilized to evaluate vehicletrack interaction effects by use of a vehicletrack coupled dynamics model. Pdf a robust finite element analysis of the railwheel. A steel wheel requires very little energy to roll on a steel rail.
Dynamics analysis of wheel rail contact using fea sciencedirect. Improving the performance of finite element simulations on the. Dynamic analysis of wheelrail interaction using finite. The solid model of rail wheel contact model is created in catia v5. 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. Since 1994 we have hosted speakers and attendees from around the globe, bringing focus and understanding to the critical area of wheelrail interaction. Discussion of the results received with the help of fem. Pdf dynamic analysis of wheelrail interaction using finite. And, of course, you cant optimize wheelrail interaction if. Fourier series are used to mathematically describe the geometry of vehicle wheel with a metal protuberance.
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