REPRESENTATION OF MICROSTRUCTURE FOR FATIGUE CRACK GROWTH IN DEM SIMULATIONS

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

REPRESENTATION OF MICROSTRUCTURE FOR FATIGUE CRACK GROWTH IN DEM SIMULATIONS

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

^*Corresponding author for this work

Research output: Contribution to conference › Paper › peer-review

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.

Original language	English
Publication status	Published - 4 Sept 2022
Event	12th International Conference on Contact Mechanics and Wear of Rail/Wheel Systems: CM 2022 - Melbourne, Hybrider Event, Australia Duration: 4 Sept 2022 → 7 Sept 2022

Conference

Conference	12th International Conference on Contact Mechanics and Wear of Rail/Wheel Systems
Abbreviated title	CM 2022
Country/Territory	Australia
City	Hybrider Event
Period	4/09/22 → 7/09/22

FWF - FERROP - Fatigue crack growth in severely shear-deformed pearlite
Poletti, M. C.
1/01/22 → 31/03/25
Project: Research project

REPRESENTATION OF MICROSTRUCTURE FOR FATIGUE CRACK GROWTH IN DEM SIMULATIONS
Hamed Davoodi Jooneghani (Speaker), Klaus Six (Contributor), Saham Sadat Sharifi (Contributor), M. C. Poletti (Contributor) & Gerald Trummer (Contributor)
5 Sept 2022
Activity: Talk or presentation › Talk at conference or symposium › Science to science

Cite this

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title = "REPRESENTATION OF MICROSTRUCTURE FOR FATIGUE CRACK GROWTH IN DEM SIMULATIONS",

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.",

author = "{Davoodi Jooneghani}, Hamed and Klaus Six and Sharifi, {Saham Sadat} and Poletti, {M. C.} and Gerald Trummer",

year = "2022",

month = sep,

day = "4",

language = "English",

note = "12th International Conference on Contact Mechanics and Wear of Rail/Wheel Systems : CM 2022, CM 2022 ; Conference date: 04-09-2022 Through 07-09-2022",

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TY - CONF

T1 - REPRESENTATION OF MICROSTRUCTURE FOR FATIGUE CRACK GROWTH IN DEM SIMULATIONS

AU - Davoodi Jooneghani, Hamed

AU - Six, Klaus

AU - Sharifi, Saham Sadat

AU - Poletti, M. C.

AU - Trummer, Gerald

PY - 2022/9/4

Y1 - 2022/9/4

N2 - 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.

AB - 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.

M3 - Paper

T2 - 12th International Conference on Contact Mechanics and Wear of Rail/Wheel Systems

Y2 - 4 September 2022 through 7 September 2022

ER -

REPRESENTATION OF MICROSTRUCTURE FOR FATIGUE CRACK GROWTH IN DEM SIMULATIONS

Abstract

Conference

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Projects

FWF - FERROP - Fatigue crack growth in severely shear-deformed pearlite

Activities

REPRESENTATION OF MICROSTRUCTURE FOR FATIGUE CRACK GROWTH IN DEM SIMULATIONS

Cite this