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Wednesday, July 15, 2020 | History

2 edition of Rail-wheel geometry associated with contact stress analysis found in the catalog.

Rail-wheel geometry associated with contact stress analysis

B. Paul

Rail-wheel geometry associated with contact stress analysis

by B. Paul

  • 199 Want to read
  • 37 Currently reading

Published by The Administration, National Technical Information Service [distributor in [Washington, D.C.], Springfield, Va .
Written in English

    Subjects:
  • Railroads -- United States -- Rails.,
  • Railroad cars -- Wheels.,
  • Strains and stresses.

  • Edition Notes

    Statementby B. Paul and J. Hashemi ; prepared for Federal Railroad Administration.
    SeriesTechnical report -- no. 6., Technical report (United States. Federal Railroad Administration) -- 6.
    ContributionsHashemi, J., United States. Federal Railroad Administration.
    The Physical Object
    Pagination27 p. :
    Number of Pages27
    ID Numbers
    Open LibraryOL17543813M

      Stress Analysis. Plastic flow and shakedown of the rail surface in repeated wheel-rail contact (A.F. Bower, K.L. Johnson). Effects of non-linear kinematic hardening on plastic deformation and residual stresses in rolling line contact (D.L. McDowell, G.J. Moyar). Analysis of edge effects on rail-wheel contact (M.T. Hanson, L.M. Keer).Book Edition: 1. A 3-D FE-model was constructed in ABAQUS® to simulate the stress/strain fields that take place under the rolling-contact of railway wheels on rails. This FE-model constitutes a faithful replica of a railway wheel that is rolled on a rail segment using a “hard-contact” over-closure relationship, and an elastoplastic material model with.

    Monfared [4] presented the contact stress analysis in rolling bodies by finite ele- ment method to analyse the pressure of collection of the wheel and rail, elliptical, rectangular and circular contact surfaces are assumed for this study using classical. Applicability of the Hertz contact theory to rail-wheel contact problems W. Yan, F. D. Fischer Summary Rail-wheel contact problems have been analyzed by applying three-dimensional finite element models. Based on these models, the applicability of the Hertz contact theory (HCT) to rail-wheel contact problems is verified in the present Size: KB.

    many researchers in various rail/wheel geometries under different conditions to evaluate stress distributions of the contact regions. From the analysis, plastic deformation, crack initiation, vehicle dynamics and wear can be analyzed. Most of the FEM conducted so far were restricted to two-dimensional rolling contact [1]-[4]. Three-dimensional. The target application is the wheel-rail contact. Careful attention is paid to stress properties in the normal direction of the contact. A Winkler method is used to calculate the normal pressure. The model is calibrated either with results from Finite Element simulations (which can include a plastic material model) or a linear-elastic contact.


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Rail-wheel geometry associated with contact stress analysis by B. Paul Download PDF EPUB FB2

Get this from a library. Rail-wheel geometry associated with contact stress analysis. [B Paul; J Hashemi; United States. Federal Railroad Administration.]. Safety and economy of railway traffic is enormously influenced by the contact stress variation caused by wheel rail contact profile changes.

A change in designed surface topology may result from wear that brings in a wide change in contact geometry and stresses.

To study the influence of interacting wheel and rail profile topology of standard rail UIC60, the standard wheel profile as per Cited by: 8. RAIL-WHEEL GEOMETRY ASSOCIATED WITH CONTACT STRESS ANALYSIS. TECHNICAL REPORT NO. This report records the derivation of a number of results pertaining to wheel and rail geometry that are needed for the analysis of contact stresses and rolling-creepage phenomena.

Contact Stress Analysis in Wheel–Rail by Hertzian Method and Finite Element Method Article (PDF Available) October with 2, Reads How we measure 'reads'. 5) Roya Sadat Ashoftech: Calculating the contact stress resulting from lateral movement of the wheel on rail by applying Hertz theory () pages – 6) Juraj Gerlici, Tomáš Lack-“Contact geometry influence on the rail / wheel surface stress distribution”, Elsevier, Procedia Engineering 2.

The earliest attempts to solve the difficult problem of contact stresses resulted in semi-empirical formulas of Winkler [], Grashof [], and an extensive set of test results on the size and shape of the contact patch under locomotive wheels [Johnson, ].However, the first dependable mathematical solution was produced by Hertz [] in a milestone paper that still represents the Cited by: 5.

the geometry of the contact surfaces [11,12]. This formulation allows the prediction of two points of simultaneous contact between one wheel and the rail by using an optimized search for possible.

The numerical approach of the rail and wheel contact was based on the Hertz theory of contact and Kalker linear theory [4]. Then, a finite element analysis was carried out for the contact zone to study the effect of variation of wheel-rail profile parameters on the Cited by: Dimensions, Contact profile, Contact Stress, Contact Pressure, Radius of Curvatures.

INTRODUCTION Rail wheel contact phenomena results in stick slip wear, giving rise to crack initiation and its propagation to yield catastrophe. The contact condition in terms of contact pressure and sliding velocity are found to File Size: 1MB.

Rolling contact fatigue of railway wheels 6 2. PRELIMINARIES – FATIGUE ANALYSIS The local shear stress on the critical plane (note that the hydrostatic stress is. Analysis of Railway Wheel to study Thermal and. Structural Behaviour. Pramod Murali Mohan. Abstract — Wheel-Rail systems are intensively subjected to damage caused by rolling contact and slip behaviour between the wheel and the rail.

This is caused because of the brake block pushed against the wheel tread to create friction through which. Péter T. Zwierczyk: Thermal and stress analysis of a railway wheel-rail rolling-sliding contact 6 Figure 6 The structure of the segmented FE computation method [13] In the course of the investigations, a 14° piece of a railway wheel of D= mm diameter with simplified geometry was examined.

During the computation, the. ABAQUS Tutorial Part 1: Stress Analysis of Railroad with Wheel Part 2. ?v=Pkcag28Osu0 ABAQUS Tutorial Book "ABAQUS for E.

Analysis of contact stress in rail and wheel is very prominent in mechanical and railway engineering. In this research, numerical analysis (FEA) of contact stress for two rolling bodies is studied by finite element method (FEM).

The model cons iders the wheel and the rail as elastic deformable bodies and requires numerical solutions. 1 ROLLING CONTACT STRESS STATES OF TWO CONTACT POINTS ON CURVED TRACK K.

Vo 1, 2, A. Tieu 1, 2, H. Zhu 1, 2, P. Kosasih 1 1Faculty of Engineering, University of Wollongong, Northfields Avenue, Wollongong, NSWAustralia 2Cooperative Research Centre (CRC) for Rail Innovation, Australia Abstract: A three-dimensional finite element model (3D FEM) of wheel/high rail.

This paper presents the identification of damages and stress analysis of rail/wheel rolling contact region. The railhead surface of used rail track was investigated to identify damages and the hardness of the rail/wheel contact area was measured. Finite element method FEM code, ANSYS was used to determine the stress distribution at vicinity of rail/wheel contact by: 2.

The susceptibility of railway wheels to wear and rolling contact fatigue damage is influenced by the properties of the wheel material. These are influenced by the steel composition, wheel manufacturing process, and thermal and mechanical loading during operation.

The in-service properties therefore vary with depth below the surface and with position across the wheel by: For the calculation of contact dimension, contact pressure and contact stress, Eqs.

(1) - Eqs. (5) are used for wheel-rail contact pair by varying the contact geometry. (a) (b) Fig (a) The effect of wheel profile radius (R 12) on the dimension of contact patch a, b and (b) area of contact patch. Wheel-rail contact stress is foundation of the relationship between wheel and rail, and also an important basis for investigating further wear, surface damage and other problems of wheel and rail system.

A three dimension elastic-plastic wheel/rail contact model is established using non-linear finite element method.

The changes of wheel/rail normal contact stress, Mises stress and elastic Author: Shao Jie Gu, Xin Wen Yang, Song Liang Lian. a review of rail-wheel contact stress problems From its earliest days, railroad technology has been limited by an inadequate understanding of the mechanics of load transfer between wheel and rail.

It is the purpose of this paper to indicate the major problems in this area, and to review the progress made to date in the solution by: 5.

contact geometry suggests the behaviour to be anticipated at the stability limit. 2 Nonlinear stability analysis Overview The stability behaviour is highly sensitive to the nonlinearities of wheel/rail contact.

These nonlinearities are triggered by the creep forces, and primarily by the contact geometry between wheelset and track.use a simplified stress calculation technique, such as Hertz analytical solution or simplified finite element analysis with applied Hertz contact pressure.

Due to the complex geometry of the wheel/rail contact area, it is more appropriate to use a 3D finite element method to calculate stress response in .From inside the book. angle of attack axle behaviour bogie brake British Columbia British Rail calculated Canada cars components contact area contact geometry contact patch contact point contact pressure contact problem contact stresses corrugation CP Rail crack creep coefficients creep forces creepage Contact mechanics and wear of.