Towards a grain-scale modeling of crack initiation in rolling contact fatigue-Part 1: Shear stress considerations
| Autor: | Fabrice Ville, Jean-Philippe Noyel, Etienne Bossy, Lucas Fourel, Philippe Sainsot, Xavier Kleber |
|---|---|
| Přispěvatelé: | Laboratoire de Mécanique des Contacts et des Structures [Villeurbanne] (LaMCoS), Institut National des Sciences Appliquées de Lyon (INSA Lyon), Université de Lyon-Institut National des Sciences Appliquées (INSA)-Université de Lyon-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS), Systèmes Mécaniques et Contacts (SMC), Université de Lyon-Institut National des Sciences Appliquées (INSA)-Université de Lyon-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS)-Institut National des Sciences Appliquées de Lyon (INSA Lyon), Matériaux, ingénierie et science [Villeurbanne] (MATEIS), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National des Sciences Appliquées de Lyon (INSA Lyon), Université de Lyon-Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS) |
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Length scale
Mesoscopic physics Materials science Mechanical Engineering Computation 02 engineering and technology Surfaces and Interfaces Mechanics 021001 nanoscience & nanotechnology Finite element method Surfaces Coatings and Films [SPI.MAT]Engineering Sciences [physics]/Materials 020303 mechanical engineering & transports Contact mechanics 0203 mechanical engineering Mechanics of Materials Shear stress 0210 nano-technology Voronoi diagram Scale model |
| Zdroj: | TRIBOLOGY INTERNATIONAL TRIBOLOGY INTERNATIONAL, 2021, 164, ⟨10.1016/j.triboint.2021.107224⟩ |
| DOI: | 10.1016/j.triboint.2021.107224⟩ |
| Popis: | A numerical model for rolling contact fatigue has been developed using finite element method and the Tanaka-Mura micromechanical model to calculate fatigue crack threshold. Two different approaches are compared: macroscopic modeling and mesoscopic modeling which considers a Voronoi polycrystalline geometry. Smooth and dented surface contacts are considered and different methods for computing shear stress are compared. It is shown that a mesoscopic length scale consideration offers benefits over a macroscopic approach in the case of dented surface meanwhile orthogonal shear stress computation on the macroscopic model can legitimately be used in the case of Hertzian contact. The article also highlights that mesoscopic modeling allows for life scatter on fatigue crack threshold. Initiation depths are consistent with literature experiments. |
| Databáze: | OpenAIRE |
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