Investigation of probable squat growth from initial surface cracks in rails using a three-dimensional rollover simulation
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In: Proceedings of the Institution of Mechanical Engineers, Part F: Journal of Rail and Rapid Transit, Vol. 238.2024, No. 4, 29.04.2024, p. 406-413.
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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 -
