Modélisation du grenaillage de précontrainte d'un alliage de nickel avec la prise en compte des contraintes résiduelles et de l'écrouissage
| Autor: | J.P. Goulmy, V. Boyer, D. Retraint, P. Kanoute, L. Toualbi, E. Rouhaud |
|---|---|
| Přispěvatelé: | Arts et Métiers Sciences et Technologies, HESAM Université - Communauté d'universités et d'établissements Hautes écoles Sorbonne Arts et métiers université (HESAM), Laboratoire des Systèmes Mécaniques et d'Ingénierie Simultanée (LASMIS), Université de Technologie de Troyes (UTT), DMAS, ONERA, Université Paris Saclay [Châtillon], ONERA-Université Paris-Saclay |
| Rok vydání: | 2023 |
| Předmět: |
[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 |
| Zdroj: | International Journal of Solids and Structures International Journal of Solids and Structures, 2023, 264, pp.112120. ⟨10.1016/j.ijsolstr.2023.112120⟩ |
| ISSN: | 0020-7683 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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