REPRESENTATION OF MICROSTRUCTURE FOR FATIGUE CRACK GROWTH IN DEM SIMULATIONS

Hamed Davoodi Jooneghani*, Klaus Six, Saham Sadat Sharifi, M. C. Poletti, Gerald Trummer

*Korrespondierende/r Autor/-in für diese Arbeit

Publikation: KonferenzbeitragPaperBegutachtung

Abstract

Short crack and fatigue behavior of pearlitic steels in wheel-rail contact depends on the microstructure. In this work, a hierarchical meshing methodology is proposed to describe microstructural details including grain/colony boundaries and lamellae orientations. The Voronoi Tessellation method was used to generate elements with the same average and standard deviation values for grain/colony areas. The area distribution of fully pearlitic steel was taken from SEM and EBSD measurements of R260 to construct a mesh that represents the microstructure. This meshing method is the first step for modeling fatigue crack growth anisotropy due to plastic deformation which can be geometrically implemented in the model.
Originalspracheenglisch
PublikationsstatusVeröffentlicht - 4 Sep. 2022
Veranstaltung12th International Conference on Contact Mechanics and Wear of Rail/Wheel Systems: CM 2022 - Melbourne, Hybrider Event, Australien
Dauer: 4 Sep. 20227 Sep. 2022

Konferenz

Konferenz12th International Conference on Contact Mechanics and Wear of Rail/Wheel Systems
KurztitelCM 2022
Land/GebietAustralien
OrtHybrider Event
Zeitraum4/09/227/09/22

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