TY - JOUR

T1 - Investigation of probable squat growth from initial surface cracks in rails using a three-dimensional rollover simulation

AU - Gschwandl, Timna Jakomijna

AU - Antretter, Thomas

AU - Künstner, David

AU - Scheriau, Stephan

AU - Daves, Werner

N1 - Publisher Copyright: © IMechE 2023.

PY - 2024/4/29

Y1 - 2024/4/29

N2 - Squats are rather complex failure mechanisms in rails and challenge railway operators all over the world, thus calling for a detailed investigation of squats by means of finite element analysis to locate the initiation and propagating mechanisms. In this work, a cyclic three-dimensional (3D) finite element model of a wheel-rail contact including an initial penny-shaped defect is used. This work presents the implementation of the starting penny-shaped crack in the rail for a wheel-rail simulation by utilising a submodel strategy. Moreover, viable evaluation options are shown. In the future, this set-up will help to assess multiple crack positions and possible squat growth mechanisms.

AB - Squats are rather complex failure mechanisms in rails and challenge railway operators all over the world, thus calling for a detailed investigation of squats by means of finite element analysis to locate the initiation and propagating mechanisms. In this work, a cyclic three-dimensional (3D) finite element model of a wheel-rail contact including an initial penny-shaped defect is used. This work presents the implementation of the starting penny-shaped crack in the rail for a wheel-rail simulation by utilising a submodel strategy. Moreover, viable evaluation options are shown. In the future, this set-up will help to assess multiple crack positions and possible squat growth mechanisms.

KW - configurational force

KW - crack driving force

KW - elasto-plastic material model

KW - finite element analysis

KW - penny-shaped crack

KW - residual stresses

KW - Squats

KW - initial surface cracks in rails

KW - three-dimensional rollover simulation

UR - http://www.scopus.com/inward/record.url?scp=85159121019&partnerID=8YFLogxK

U2 - 10.1177/09544097231171742

DO - 10.1177/09544097231171742

M3 - Article

AN - SCOPUS:85159121019

VL - 238.2024

SP - 406

EP - 413

JO - Proceedings of the Institution of Mechanical Engineers, Part F: Journal of Rail and Rapid Transit

JF - Proceedings of the Institution of Mechanical Engineers, Part F: Journal of Rail and Rapid Transit

SN - 0954-4097

IS - 4

ER -