The effect of dynamic rail roll on the wheel-rail contact conditions

Y. Bezin, S. D. Iwnicki, M. Cavalletti

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

Simulation tools are now widely used to predict the dynamic behaviour of railway vehicles and they have been developed to include highly complex vehicle models which can represent non-linear wheel-rail contact and suspension characteristics. Less emphasis has so far been placed on the track models used in these simulations which have tended to be fairly simple linear representations of the track and subgrade although these can also contain significant discrete non-linearities. This paper first reviews the track models used in current railway vehicle dynamic software and identifies their main limitations. The particular focus of the work reported here is the rail roll degree of freedom (DOF) and its influence on the wheel-rail contact condition. The rigid body track model in the software tool VI-Rail powered by MSC Adams is modified to fully take into account rail roll in combination with the non-linear on-line contact algorithm. Various static and dynamic track cases are designed to test the hypothesis that rail roll may affect the contact condition. Results show the influence of the dynamic rail roll on the location of the contact between the wheel and rail and some analysis is made into the implications this may have on wear and rolling contact fatigue calculations among other applications.

LanguageEnglish
Pages107-117
Number of pages11
JournalVehicle System Dynamics
Volume46
Issue numberSupp.1
DOIs
Publication statusPublished - 2008
Externally publishedYes

Fingerprint

Rails
Wheels
Railroad tracks
Wear of materials
Fatigue of materials

Cite this

@article{73e4650b54b443a182f2b9d7d6efc818,
title = "The effect of dynamic rail roll on the wheel-rail contact conditions",
abstract = "Simulation tools are now widely used to predict the dynamic behaviour of railway vehicles and they have been developed to include highly complex vehicle models which can represent non-linear wheel-rail contact and suspension characteristics. Less emphasis has so far been placed on the track models used in these simulations which have tended to be fairly simple linear representations of the track and subgrade although these can also contain significant discrete non-linearities. This paper first reviews the track models used in current railway vehicle dynamic software and identifies their main limitations. The particular focus of the work reported here is the rail roll degree of freedom (DOF) and its influence on the wheel-rail contact condition. The rigid body track model in the software tool VI-Rail powered by MSC Adams is modified to fully take into account rail roll in combination with the non-linear on-line contact algorithm. Various static and dynamic track cases are designed to test the hypothesis that rail roll may affect the contact condition. Results show the influence of the dynamic rail roll on the location of the contact between the wheel and rail and some analysis is made into the implications this may have on wear and rolling contact fatigue calculations among other applications.",
keywords = "Contact algorithm, Flexible track, Rail roll, RCF, Wear, Wheel-rail contact",
author = "Y. Bezin and Iwnicki, {S. D.} and M. Cavalletti",
year = "2008",
doi = "10.1080/00423110701882348",
language = "English",
volume = "46",
pages = "107--117",
journal = "Vehicle System Dynamics",
issn = "0042-3114",
publisher = "Taylor and Francis Ltd.",
number = "Supp.1",

}

The effect of dynamic rail roll on the wheel-rail contact conditions. / Bezin, Y.; Iwnicki, S. D.; Cavalletti, M.

In: Vehicle System Dynamics, Vol. 46, No. Supp.1, 2008, p. 107-117.

Research output: Contribution to journalArticle

TY - JOUR

T1 - The effect of dynamic rail roll on the wheel-rail contact conditions

AU - Bezin, Y.

AU - Iwnicki, S. D.

AU - Cavalletti, M.

PY - 2008

Y1 - 2008

N2 - Simulation tools are now widely used to predict the dynamic behaviour of railway vehicles and they have been developed to include highly complex vehicle models which can represent non-linear wheel-rail contact and suspension characteristics. Less emphasis has so far been placed on the track models used in these simulations which have tended to be fairly simple linear representations of the track and subgrade although these can also contain significant discrete non-linearities. This paper first reviews the track models used in current railway vehicle dynamic software and identifies their main limitations. The particular focus of the work reported here is the rail roll degree of freedom (DOF) and its influence on the wheel-rail contact condition. The rigid body track model in the software tool VI-Rail powered by MSC Adams is modified to fully take into account rail roll in combination with the non-linear on-line contact algorithm. Various static and dynamic track cases are designed to test the hypothesis that rail roll may affect the contact condition. Results show the influence of the dynamic rail roll on the location of the contact between the wheel and rail and some analysis is made into the implications this may have on wear and rolling contact fatigue calculations among other applications.

AB - Simulation tools are now widely used to predict the dynamic behaviour of railway vehicles and they have been developed to include highly complex vehicle models which can represent non-linear wheel-rail contact and suspension characteristics. Less emphasis has so far been placed on the track models used in these simulations which have tended to be fairly simple linear representations of the track and subgrade although these can also contain significant discrete non-linearities. This paper first reviews the track models used in current railway vehicle dynamic software and identifies their main limitations. The particular focus of the work reported here is the rail roll degree of freedom (DOF) and its influence on the wheel-rail contact condition. The rigid body track model in the software tool VI-Rail powered by MSC Adams is modified to fully take into account rail roll in combination with the non-linear on-line contact algorithm. Various static and dynamic track cases are designed to test the hypothesis that rail roll may affect the contact condition. Results show the influence of the dynamic rail roll on the location of the contact between the wheel and rail and some analysis is made into the implications this may have on wear and rolling contact fatigue calculations among other applications.

KW - Contact algorithm

KW - Flexible track

KW - Rail roll

KW - RCF

KW - Wear

KW - Wheel-rail contact

UR - http://www.scopus.com/inward/record.url?scp=51449098604&partnerID=8YFLogxK

UR - http://www.tandfonline.com/toc/nvsd20/current

U2 - 10.1080/00423110701882348

DO - 10.1080/00423110701882348

M3 - Article

VL - 46

SP - 107

EP - 117

JO - Vehicle System Dynamics

T2 - Vehicle System Dynamics

JF - Vehicle System Dynamics

SN - 0042-3114

IS - Supp.1

ER -