Vincent Maurel ; Vincent Chiaruttini ; Alain Köster ; Djamel Missoum-Benziane - Fatigue crack growth under large scale yielding condition: a tool based on explicit crack growth

jtcam:9296 - Journal of Theoretical, Computational and Applied Mechanics, February 3, 2023 - https://doi.org/10.46298/jtcam.9296
Fatigue crack growth under large scale yielding condition: a tool based on explicit crack growthArticle

Authors: Vincent Maurel ORCID1; Vincent Chiaruttini ORCID2; Alain Koster 1; Djamel Missoum-Benziane ORCID1

Fatigue crack growth under large-scale yielding condition is studied for high-temperature loading. The applied strains are so important that diffuse damage phenomena are visible as a network of micro-cracks in front of the major crack. The survey of a macroscopic cracked surface is nevertheless possible, and numerical simulations with explicit representation of this crack are carried out to evaluate crack driving forces. The proposed numerical scheme takes into account plastic wake in the course of crack growth in a 3D model. A non-local model of fatigue crack growth rate, based on partition of strain energy density into elastic and plastic terms, yields improved results as compared to classical assessment of ∆J by numerical methods.


Published on: February 3, 2023
Accepted on: September 21, 2022
Submitted on: April 4, 2022
Keywords: low cycle fatigue,strain energy method,high temperature fatigue,non-local model,adaptive remeshing,[SPI.MECA.MEMA]Engineering Sciences [physics]/Mechanics [physics.med-ph]/Mechanics of materials [physics.class-ph]
Funding:
    Source : HAL
  • Simulation et caractérisation ExpériMentAle de la FissuratiOn en plasticité généRalisée; Funder: French National Research Agency (ANR); Code: ANR-14-CE07-0037

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