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Modélisation du grenaillage de précontrainte d'un alliage de nickel avec la prise en compte des contraintes résiduelles et de l'écrouissage
- Source :
- International Journal of Solids and Structures, International Journal of Solids and Structures, 2023, 264, pp.112120. ⟨10.1016/j.ijsolstr.2023.112120⟩
- Publication Year :
- 2023
- Publisher :
- Elsevier BV, 2023.
-
Abstract
- International audience; Shot peening of turbine disk engines is performed in the aerospace industry in order to enhance fatigue life. This surface enhancement method generates beneficial modifications like superficial compressive residual stresses that are known to delay crack initiation and propagation. In the same way, work hardening is also introduced at the surface of the part during shot peening and can have a significant influence on fatigue crack initiation. Taking this parameter into account in the fatigue design of parts, in addition to the residual stresses, is a real challenge to be the most predictive. One possibility for this is to be able to predict it during the modeling of the shot peening process. In the present work, various peening conditions are considered in order to be able to propose a model able to account for the influence of coverage and Almen intensity on residual stresses and work hardening. The studied material is Inconel 718, commonly used for aeronautical parts. The X-ray diffraction method is used to obtain the in-depth residual stress and work-hardening profiles. A three-dimensional numerical model is proposed to predict these quantities. Efforts are made to consider all recent advances in three-dimensional simulation of the process, in terms of coverage assessment, shot and treated part modeling. The numerical results are compared to the experimentally measured residual stresses and work hardening.
- Subjects :
- [PHYS]Physics [physics]
élément fini
Inconel 718
Mécanique [Sciences de l'ingénieur]
Shot Peening
Applied Mathematics
Mechanical Engineering
Work hardening
grenaillage
Condensed Matter Physics
Residual stresses
[SPI]Engineering Sciences [physics]
Mechanics of Materials
Finite-element model
Modeling and Simulation
[CHIM]Chemical Sciences
General Materials Science
écrouissage : INCONEL 718
modélisation
contrainte résiduelle
Subjects
Details
- ISSN :
- 00207683
- Volume :
- 264
- Database :
- OpenAIRE
- Journal :
- International Journal of Solids and Structures
- Accession number :
- edsair.doi.dedup.....c1c969f42a63fb22876139251e097a06