A New Wheel-Rail Contact Model for Railway Dynamics

Joao Pombo, Jorge Ambrósio, Miguel Silva

Research output: Contribution to journalArticle

107 Citations (Scopus)

Abstract

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 kinematics of guidance of the wheelsets is based on the wheels and rails geometries. The movement of the wheelsets along the rails is characterized by a complex contact with relative motions on the longitudinal and lateral directions and relative rotations of the wheels with respect to the rails. A generic wheel-rail contact detection formulation is presented here in order to determine online the contact points, even for the most general three-dimensional motion of the wheelset. This formulation also allows the study of lead and lag flange contact scenarios, both fundamental for the analysis of potential derailments or for the study of the dynamic behavior in the presence of switches. The methodology is used in conjunction with a general geometric description of the track, which includes the representation of the rails' spatial geometry and irregularities. In this work, the tangential creep forces and moments that develop in the wheel-rail contact area are evaluated using alternatively the Kalker linear theory, the Heuristic nonlinear model or the Polach formulation. The discussion on the benefits and drawbacks of these methodologies is supported by an application to the dynamic analysis of the bogie of the railway vehicle.

Original languageEnglish
Pages (from-to)165-189
Number of pages25
JournalVehicle System Dynamics
Volume45
Issue number2
DOIs
Publication statusPublished - Feb 2007
Externally publishedYes

Fingerprint

Rails
Wheels
Derailments
Railroad tracks
Geometry
Point contacts
Flanges
Dynamic analysis
Creep
Kinematics
Lead
Switches

Cite this

Pombo, Joao ; Ambrósio, Jorge ; Silva, Miguel. / A New Wheel-Rail Contact Model for Railway Dynamics. In: Vehicle System Dynamics. 2007 ; Vol. 45, No. 2. pp. 165-189.
@article{7328ded390e14fdb93e09835b6519bf8,
title = "A New Wheel-Rail Contact Model for Railway Dynamics",
abstract = "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 kinematics of guidance of the wheelsets is based on the wheels and rails geometries. The movement of the wheelsets along the rails is characterized by a complex contact with relative motions on the longitudinal and lateral directions and relative rotations of the wheels with respect to the rails. A generic wheel-rail contact detection formulation is presented here in order to determine online the contact points, even for the most general three-dimensional motion of the wheelset. This formulation also allows the study of lead and lag flange contact scenarios, both fundamental for the analysis of potential derailments or for the study of the dynamic behavior in the presence of switches. The methodology is used in conjunction with a general geometric description of the track, which includes the representation of the rails' spatial geometry and irregularities. In this work, the tangential creep forces and moments that develop in the wheel-rail contact area are evaluated using alternatively the Kalker linear theory, the Heuristic nonlinear model or the Polach formulation. The discussion on the benefits and drawbacks of these methodologies is supported by an application to the dynamic analysis of the bogie of the railway vehicle.",
keywords = "Contact Point Detection, Creep Forces, Spatial Curves, Stability Critical Speed",
author = "Joao Pombo and Jorge Ambr{\'o}sio and Miguel Silva",
year = "2007",
month = "2",
doi = "10.1080/00423110600996017",
language = "English",
volume = "45",
pages = "165--189",
journal = "Vehicle System Dynamics",
issn = "0042-3114",
publisher = "Taylor and Francis Ltd.",
number = "2",

}

A New Wheel-Rail Contact Model for Railway Dynamics. / Pombo, Joao; Ambrósio, Jorge; Silva, Miguel.

In: Vehicle System Dynamics, Vol. 45, No. 2, 02.2007, p. 165-189.

Research output: Contribution to journalArticle

TY - JOUR

T1 - A New Wheel-Rail Contact Model for Railway Dynamics

AU - Pombo, Joao

AU - Ambrósio, Jorge

AU - Silva, Miguel

PY - 2007/2

Y1 - 2007/2

N2 - 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 kinematics of guidance of the wheelsets is based on the wheels and rails geometries. The movement of the wheelsets along the rails is characterized by a complex contact with relative motions on the longitudinal and lateral directions and relative rotations of the wheels with respect to the rails. A generic wheel-rail contact detection formulation is presented here in order to determine online the contact points, even for the most general three-dimensional motion of the wheelset. This formulation also allows the study of lead and lag flange contact scenarios, both fundamental for the analysis of potential derailments or for the study of the dynamic behavior in the presence of switches. The methodology is used in conjunction with a general geometric description of the track, which includes the representation of the rails' spatial geometry and irregularities. In this work, the tangential creep forces and moments that develop in the wheel-rail contact area are evaluated using alternatively the Kalker linear theory, the Heuristic nonlinear model or the Polach formulation. The discussion on the benefits and drawbacks of these methodologies is supported by an application to the dynamic analysis of the bogie of the railway vehicle.

AB - 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 kinematics of guidance of the wheelsets is based on the wheels and rails geometries. The movement of the wheelsets along the rails is characterized by a complex contact with relative motions on the longitudinal and lateral directions and relative rotations of the wheels with respect to the rails. A generic wheel-rail contact detection formulation is presented here in order to determine online the contact points, even for the most general three-dimensional motion of the wheelset. This formulation also allows the study of lead and lag flange contact scenarios, both fundamental for the analysis of potential derailments or for the study of the dynamic behavior in the presence of switches. The methodology is used in conjunction with a general geometric description of the track, which includes the representation of the rails' spatial geometry and irregularities. In this work, the tangential creep forces and moments that develop in the wheel-rail contact area are evaluated using alternatively the Kalker linear theory, the Heuristic nonlinear model or the Polach formulation. The discussion on the benefits and drawbacks of these methodologies is supported by an application to the dynamic analysis of the bogie of the railway vehicle.

KW - Contact Point Detection

KW - Creep Forces

KW - Spatial Curves

KW - Stability Critical Speed

UR - http://www.scopus.com/inward/record.url?scp=33847244879&partnerID=8YFLogxK

U2 - 10.1080/00423110600996017

DO - 10.1080/00423110600996017

M3 - Article

VL - 45

SP - 165

EP - 189

JO - Vehicle System Dynamics

JF - Vehicle System Dynamics

SN - 0042-3114

IS - 2

ER -