Without having an appropriate understanding of the wheelrail interaction, the essential safety analysis of stability and derailment or. To study the influence of interacting wheel and rail profile topology of standard rail uic60, the standard wheel profile as per. Interaction of molecules of phosphoruscontaining inorganic. Dynamic analysis including chapter xi analysis of rail car body and rail car suspension systems, and wheel rail interaction using vampire andor omnisim test planning, setup and support for revenue service and laboratory tests, related to passenger cars, transit cars, freight cars, and car components. Contact mechanics analysis of measured wheelrail profiles using the finite element method all machine elements working in contact are subject to various degradation mechanisms. Hence, the primary step investigates such mechanisms to clearly know the shape and size of the contact patch, and the distribution of the stresses within it. A detailed fe model is first constructed to simulate the test structure. The results show that the maximum vertical wheelrail. The entire finite element model of the wheelrail system, built by using commercial software hypermesh, consists of two wheels the one has a fresh flat, one axle and two rails. Analysis of wheel rail interaction using fe software. A tool and a method for fe analysis of wheel and rail interaction. By bob tuzik july, 2008 as research into wheelrail interaction has evolved, the emphasis has moved toward implementation of available technology and conversion of data into information.
To improve the solving speed and efficiency, an explicitexplicit order solution method is put forward based on analysis of the features of implicit and explicit algorithm. Fem of wheelrail rolling contact is then developed by using abaqus with the. Application of the dang van fatigue criterion to the rail. A threedimensional 3d wheelrail rolling contact model with a wheel flat was built using commercial software hypermesh, and the dynamic finite element simulation was conducted using lsdyna 3dexplicit code. Coupled multibody and finite element modeling for simulating. The results show that the maximum vertical wheel rail. If you need to print pages from this book, we recommend downloading it as a pdf. Analysis of rail wheel contact stresses by using ansys ansys is finite element analysis software which enables engineers to perform the following tasks. He has facilitated my knowledge on railroad engineering. Analysis of wheelrail interaction for the development of a new tramway. Analysis of wheelrail interaction for the development of a new. The wheel rail contact has been of crucial interest to the railway engineers.
Assessment of the efficiency of railway wheel dampers using. Recycled plastic is the new material for heritage railway sleepers. It contains an introduction and the following papers. A new solution method for wheelrail rolling contact. Finite element analysis of rail wheel interaction ijraset. Assessment of the factors influencing micropitting in rollingsliding contacts. Dynamic responses of wheelrail systems with block dampers.
Abaqus tutorial stress analysis of railroad with wheel. Weight reduction, modal analysis and testing of an indian. A robust finite element analysis of the railwheel rolling. There are enormous challenges before indian railways 1. Dynamic explicit analysis has been used for the simulation of a moving load, and the train speed effect has been studied. With the development of modern computing techniques and the. The quasihertz method as well as a finite element fe method were included as basis of mathematical simulation.
Therefore, components of this system are modeled through the accurate engineering drawings via ansys fe package as the analysis software. A tool and a method for fe analysis of wheel and rail interaction tanel telliskivi, ulf olofsson, ulf sellgren and patrik kruse machine elements, department of machine design. Shock and vibration hindawi publishing corporation. Analysis of railway wheel to study crack initiation due to thermal. A 3d traintracksubgrade interaction finite element fe model was constructed using the abaqus code, where different vertical irregular track spectra were simulated by modifying the vertical node coordinates of the fe mesh of the rail. 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. In the present work a three dimensional finite element analysis of the wheel rail contact problem was performed using the software abaqus. Great interest is dedicated to the wheelrail contact problem, in particular as a result of some accidents worldwide and also in portugal. As previously mentioned, the maximum longitudinal wheel load is imparted from an accelerating locomotive wheel, thus the fe model only considered a locomotive. The remainder of this paper is organized as follows. Threedimensional elasticplastic finite element analysis for.
Pdf a robust finite element analysis of the railwheel rolling. The solid model of railwheel contact model is created in catia v5. Quantumchemical analysis and tribotechnical testing. Interaction of molecules of phosphoruscontaining inorganic additives with iron surface. The fe model simulated the rolling of a locomotive wheel on a finite length of a railway track. Wu, and thompson 10 have investigated vibration analysis of railway track with multiple wheels on the rail. To simulate the 3d contact interaction analysis of railwheel, the following. Institute of railway technology celebrates 15 years at. Structural analysis is performed to locate the critical zones and surfaces with the help of finite element method fem using msc fea software for weight reduction. Flange climb derailment criteria and wheelrail profile. Delft university of technology condition monitoring. Within stardamp, a software tool based on twins has been developed with the aim of providing a tool to a larger public, including non experts. Ansys software is utilized with the purpose of simulating the system. Parametric study on the distribution of longitudinal load in.
On the other hand, some practical methods have also been introduced to solve traditional problems related to railwheel interaction. Monash irt and jakarta mrt partnership on indonesian railway projects. The data analysis software computes the contact parameters by placing each wheelset on the measured rail pair. Author links open overlay panel aleksander sladkowski marek sitarz. D contact interaction analysis of railwheel, the following. With these tools, distributions of contact zones for different angles of attack of the. Proceedings of the 9th international scientific conference, may 78, 2015. Zhai, analysis of vertical dynamic wheelrail interaction caused by polygonal wheels on highspeed trains, wear, vol. An fe model with multiple crossties and their accompanying fastening. Influences of the train speed, flat length and axle load on the vertical wheel rail impact response were discussed, respectively. Kevin oldknow chief engineer, wheelrail interface l. Wheelrail interaction analysis wear friction avaliacao. Therefore, wheelrail configurations examined are for the geometrical parameters like conicity, which varies from 1.
In this work, two techniques were applied for condition monitoring of rails. The mesh and mesh density of wheelrail finite element models. Finite elements analysis of the railwheel rolling contact. Such was the case at wheelrail interaction 08, the 14th annual seminar produced by advanced rail management and sponsored by progressive railroading magazine. Interaction in the contact zone between a wheel and rail is.
Final fe model is run and postprocessed successfully to visualize stress and strain levels. 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. Foster rail technologies with the assistance of and permission from sahha 2015 technical workshop, birchwood hotel 8 october, 2015. Olofsson, contact mechanics analysis of measured wheelrail profiles using the finite element method journal of rail and rapid transit, proc. The rail wheel interaction is one of the important mechanics for the study in. Pdf dynamic analysis of wheelrail interaction using finite. It also provides the equations governing the contact forces and the system motion. 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. University magdeburg, institute of machine design, magdeburg 2004. 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. Improving performance, finite element analysis, wheelrail interaction, coupling strategy.
Analysis of wheelrail interaction using fe software, department of. Jul 23, 2017 this video will explain the fundamental of lower natural frequencies and mode shapes. Influence analysis on the effect of rail fastening parameters. An iterative process of generating the track and bridge modes of excitation from the fe model, then wheelrail forces from a vampire analysis, followed by further fe analysis using these forces as input, is carried out. Analysis of the wheelrail rolling contact fatigue of a highspeed train. Riding through rail crossings involves flange tips in formation of the contact with rails. Moreover, a comparison is also shown for the variation in the contact area, pressure and stress using finite element analysis. Dynamic stress of subgrade bed layers subjected to train. Finie element analysis of railway track under vehicle. Influences of the train speed, flat length and axle load on the vertical wheelrail impact response were discussed, respectively. A large force from the first body wheel is transferred to the second body rail through a small contact region about 1 cm2. The wheelrail contact has been of crucial interest to the railway engineers. The model of the moving irregularity is much easier to use and it is currently utilized for the frequencydomain analysis 5.
To improve the solving speed and efficiency, an explicitexplicit order solution method is put forward based on analysis of the features of implicit. This video will explain the fundamental of lower natural frequencies and mode shapes. The main differences between contacting machine elements lie in their geometries and the motion dynamics to which they are subject. The cast steel bolster is modeled according to drawings using nx 7. 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.
Methodology for the determination of maximum contact vertical wheel loads. On the other hand, some practical methods have also been introduced to solve traditional problems related to rail wheel interaction. The result obtained from the analysis is shown with the plots between various factors affecting. Fundamentals of wheelrail interaction michael roney consultant and retired chief engineer, canadian pacific dr.
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. Dynamic analysis of wheelrail interaction using finite. Stress analysis on rail wheel contact semantic scholar. The dynamic responses of subgrade bed layers are the key factors affecting the service performance of a heavyhaul railway. Using wheel rail interface analysis to evaluate rail transit. Also it will demonstrated the step by step how to do steady state dynamics analysis in abaqus standard.
A change in designed surface topology may result from wear that brings in a wide change in contact geometry and stresses. 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. Other original contribution of this research is to create a precise finite element model of a 3d rail wheel, axle and pads in order to evaluate stresses, strains, and contact forces in this complex interaction system. Dynamic analysis of wheelrail interaction using finite element method. A robust finite element analysis of the railwheel rolling contact. May 12, 2017 a threedimensional 3d wheel rail rolling contact model with a wheel flat was built using commercial software hypermesh, and the dynamic finite element simulation was conducted using lsdyna 3dexplicit code. To solve the problem of wheelrail rolling contact of nonlinear steadystate curving, a threedimensional transient finite element fe model is developed by the explicit software ansyslsdyna. Load cases and boundary conditions are applied as per international. Analysis of wheelrail interaction using fe software. The maximum operating speed for realtime data analysis can now reach up to. The wheel rail interface anatomy and key terminology the contact patch and contact pressures creepage and traction forces part 2 vehicle steering and curving forces wear and rolling contact fatigue part 3 the third body layer, tractioncreepageand friction management. Improving the performance of finite element simulations on the. Pdf a robust finite element analysis of the railwheel.
Using wheel rail interface analysis to evaluate rail transit maintenance priorities. Interface journal the journal of wheelrail interaction. A dynamic simulation of the wheelrail impact caused by a. To create the fe model, the precise profiles in accordance with the actual sizes have been taken into consideration. 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. Safety and economy of railway traffic is enormously influenced by the contact stress variation caused by wheel rail contact profile changes.
In this work, an attempt to analyze the wheelrail contact interaction for various profiles of wheels and rails, including severely worn ones, is made. Jan 04, 2014 by bob tuzik july, 2008 as research into wheelrail interaction has evolved, the emphasis has moved toward implementation of available technology and conversion of data into information. Vibration of the whole system is very noteworthy in terms of the servicelife of the components, driving safety and passenger comfort. Other original contribution of this research is to create a precise finite element model of a 3d railwheel, axle and pads in order to evaluate stresses, strains, and contact forces in this complex interaction system. Dynamic analysis of wheelrail interaction using finite element. It has been accepted for inclusion in mechanical and materials engineering. The wheelrail interface is the contact area where wheelrail interaction between wheels and rails in railways takes place. Natural frequency analysis is a useful methodology to evaluate the integrity condition of structural elements, such as. The wheel with the radius of 430 mm has a s1002cn tread, while the rail with a base slope of 1. Analysis of wheel rail interaction using fe software has been studied by sladkowski and sitarz 4. Dynamics analysis of wheel rail contact using fea sciencedirect. In terms of the analysis of fastenings and substructure of railways, the results showed that the mixed finite element method femboundary element method bem model is a good predictor, and the dominant frequency range varied between 40 and 80 hz in which noises of the bridge structures emerged, mainly related to stiffness of the fasteners. The section modeling includes the fe modeling of the system, and explains the formulations used in the mbs analysis.
The solid model of rail wheel contact model is created in catia v5. In this paper wheelflat and rail interaction dynamics, modeled through a finite element model is. Analysis of wheelrail interaction using fe software has been studied by sladkowski and sitarz 4. Analysis of rolling contact fatigue damage initiation at the. The dynamic interaction of wheel and rail is a key problem in a railway system.
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