An Alternative Method to Include Track Irregularities in Railway Vehicle Dynamics Analyses

Joao Pombo, Jorge Ambrósio

Research output: Contribution to journalArticle

42 Citations (Scopus)

Abstract

The dynamic behaviour of the railway vehicles dependents on the interaction that is developed between the wheels of the rolling stock and the rails. Furthermore, one of the most sensible issues in the railway industry is the damage on vehicles caused by the track conditions and the infrastructure deterioration due to the trainsets' operation. The study of such phenomena requires the accurate definition of the track geometry that involves, not only the representation of the design track layout, but also the description of its irregularities. In this work, a methodology that includes the track imperfections, measured experimentally by the railroad companies, in the definition of the track model is developed. The purpose is to obtain realistic representations of the track, which are essential to study the dynamics of railway vehicles. The methodology described in this work is applied to study the influence of the track irregularities on the dynamic behaviour of the railway vehicle ML95, which is operated by the Lisbon metro company. For this purpose, a multibody formulation is used to build the vehicle model and a generic wheel-rail contact formulation is applied in order to determine, online during the dynamic analysis, the contact points location and the respective normal and tangential forces. The studies are performed in real operation conditions when travelling between two of the metro stations. The accuracy and suitability of the methodology presented here is demonstrated through the comparison of the dynamic analysis results against those obtained by experimental testing.

LanguageEnglish
Pages161-176
Number of pages16
JournalNonlinear Dynamics
Volume68
Issue number1-2
DOIs
Publication statusPublished - 1 Apr 2012
Externally publishedYes

Fingerprint

Vehicle Dynamics
Irregularity
Railway
Alternatives
Railroad tracks
Dynamic analysis
Rails
Wheels
Dynamic Analysis
Wheel
Dynamic Behavior
Industry
Methodology
Railroads
Point contacts
Contact
Point Location
Deterioration
Formulation
Imperfections

Cite this

@article{805c3043da5740a3a247b800cd4e10db,
title = "An Alternative Method to Include Track Irregularities in Railway Vehicle Dynamics Analyses",
abstract = "The dynamic behaviour of the railway vehicles dependents on the interaction that is developed between the wheels of the rolling stock and the rails. Furthermore, one of the most sensible issues in the railway industry is the damage on vehicles caused by the track conditions and the infrastructure deterioration due to the trainsets' operation. The study of such phenomena requires the accurate definition of the track geometry that involves, not only the representation of the design track layout, but also the description of its irregularities. In this work, a methodology that includes the track imperfections, measured experimentally by the railroad companies, in the definition of the track model is developed. The purpose is to obtain realistic representations of the track, which are essential to study the dynamics of railway vehicles. The methodology described in this work is applied to study the influence of the track irregularities on the dynamic behaviour of the railway vehicle ML95, which is operated by the Lisbon metro company. For this purpose, a multibody formulation is used to build the vehicle model and a generic wheel-rail contact formulation is applied in order to determine, online during the dynamic analysis, the contact points location and the respective normal and tangential forces. The studies are performed in real operation conditions when travelling between two of the metro stations. The accuracy and suitability of the methodology presented here is demonstrated through the comparison of the dynamic analysis results against those obtained by experimental testing.",
keywords = "3D Track Models, Experimental Data, Railway Dynamics, Vehicle-Track Interaction, Wheel-Rail Contact",
author = "Joao Pombo and Jorge Ambr{\'o}sio",
year = "2012",
month = "4",
day = "1",
doi = "10.1007/s11071-011-0212-2",
language = "English",
volume = "68",
pages = "161--176",
journal = "Nonlinear Dynamics",
issn = "0924-090X",
publisher = "Springer Netherlands",
number = "1-2",

}

An Alternative Method to Include Track Irregularities in Railway Vehicle Dynamics Analyses. / Pombo, Joao; Ambrósio, Jorge.

In: Nonlinear Dynamics, Vol. 68, No. 1-2, 01.04.2012, p. 161-176.

Research output: Contribution to journalArticle

TY - JOUR

T1 - An Alternative Method to Include Track Irregularities in Railway Vehicle Dynamics Analyses

AU - Pombo, Joao

AU - Ambrósio, Jorge

PY - 2012/4/1

Y1 - 2012/4/1

N2 - The dynamic behaviour of the railway vehicles dependents on the interaction that is developed between the wheels of the rolling stock and the rails. Furthermore, one of the most sensible issues in the railway industry is the damage on vehicles caused by the track conditions and the infrastructure deterioration due to the trainsets' operation. The study of such phenomena requires the accurate definition of the track geometry that involves, not only the representation of the design track layout, but also the description of its irregularities. In this work, a methodology that includes the track imperfections, measured experimentally by the railroad companies, in the definition of the track model is developed. The purpose is to obtain realistic representations of the track, which are essential to study the dynamics of railway vehicles. The methodology described in this work is applied to study the influence of the track irregularities on the dynamic behaviour of the railway vehicle ML95, which is operated by the Lisbon metro company. For this purpose, a multibody formulation is used to build the vehicle model and a generic wheel-rail contact formulation is applied in order to determine, online during the dynamic analysis, the contact points location and the respective normal and tangential forces. The studies are performed in real operation conditions when travelling between two of the metro stations. The accuracy and suitability of the methodology presented here is demonstrated through the comparison of the dynamic analysis results against those obtained by experimental testing.

AB - The dynamic behaviour of the railway vehicles dependents on the interaction that is developed between the wheels of the rolling stock and the rails. Furthermore, one of the most sensible issues in the railway industry is the damage on vehicles caused by the track conditions and the infrastructure deterioration due to the trainsets' operation. The study of such phenomena requires the accurate definition of the track geometry that involves, not only the representation of the design track layout, but also the description of its irregularities. In this work, a methodology that includes the track imperfections, measured experimentally by the railroad companies, in the definition of the track model is developed. The purpose is to obtain realistic representations of the track, which are essential to study the dynamics of railway vehicles. The methodology described in this work is applied to study the influence of the track irregularities on the dynamic behaviour of the railway vehicle ML95, which is operated by the Lisbon metro company. For this purpose, a multibody formulation is used to build the vehicle model and a generic wheel-rail contact formulation is applied in order to determine, online during the dynamic analysis, the contact points location and the respective normal and tangential forces. The studies are performed in real operation conditions when travelling between two of the metro stations. The accuracy and suitability of the methodology presented here is demonstrated through the comparison of the dynamic analysis results against those obtained by experimental testing.

KW - 3D Track Models

KW - Experimental Data

KW - Railway Dynamics

KW - Vehicle-Track Interaction

KW - Wheel-Rail Contact

UR - http://www.scopus.com/inward/record.url?scp=84858705156&partnerID=8YFLogxK

U2 - 10.1007/s11071-011-0212-2

DO - 10.1007/s11071-011-0212-2

M3 - Article

VL - 68

SP - 161

EP - 176

JO - Nonlinear Dynamics

T2 - Nonlinear Dynamics

JF - Nonlinear Dynamics

SN - 0924-090X

IS - 1-2

ER -