Simulation of shot peening: From process parameters to residual stress fields in a structure
TypeArticles dans des revues avec comité de lecture
Manufacturing industries perform mechanical surface treatments like shot peening at the end of the manufacturing chain to protect important working parts. This treatment modifies the near surface of the treated part with the introduction of compressive residual stresses due to the repeated impacts of the shot. Then, the treated part exhibits, not only a longer life, but also a better fretting behavior, an improved resistance to corrosion… The objective of the present paper is first to study the relation between the process parameters and the material state (residual stress and plastic variables…) for a complex geometry. Next, a numerical tool is proposed, able to predict this material state in a time frame that is consistent with industrial constraints. The originality of the proposed approach thus consists in the chaining of the different steps. The first step is to choose the process parameters for the shot peening process considering conventional or ultrasonic shot peening and model the shot dynamics for a complex geometry. Once the impact velocity field is known, the objective is to compute the local incompatible plastic deformation field due to the repeated impacts using analytical methods. Then, a finite element model is used to compute the residual and deformation fields in the considered mechanical part. The complete method has been performed on the model of a gear, a mechanical part that is most often shot peened and exhibits a complex geometry.
Showing items related by title, author, creator and subject.
Modelling of multiple impacts for the prediction of distortions and residual stresses induced by ultrasonic shot peening (USP) CHAISE, Thibaut; LI, Jun; NELIAS, Daniel; KUBLER, Régis; TAHERI, Said; DOUCHET, Gérard; ROBIN, Vincent; GILLES, Philippe (Elsevier, 2012)During a manufacturing process, the ultrasonic shot peening (USP) technique can be used as the final surface treatment. The aim of this operation is to introduce surface compressive residual stresses in order to prevent ...
SOULACROIX, Julian; MICHEL, Bruno; GATT, Jean-Marie; KUBLER, Régis; BARRALLIER, Laurent (International Journal of Plasticity, 2014)A model reproducing strain softening behavior in ceramic materials is proposed, base on a critical treatment of previous mechanical experimental results on uranium dioxide. The main hypothesis is that the strain softening ...
Modélisation de la tenue en fatigue des aciers à transformation de phase austénite martensite après grenaillage de précontrainte MAUDUIT, Clément; KUBLER, Régis; BARRALLIER, Laurent; BERVEILLER, Sophie; PUYDT, Quentin (MATEC Web of Conferences, 2015)Le grenaillage de précontrainte a pour but d’augmenter la durée de vie des matériaux traités en introduisant des contraintes résiduelles de compression. Cette étude porte sur la modélisation de la tenue en fatigue d’aciers ...
JEGOU, Sébastien; KUBLER, Régis; BARRALLIER, Laurent; ROCH, François (2009)Nitriding of steels is an important treatment in duplex hardening methods. This treatment is known in the art but some advances still need to be done in terms of residual stress understanding. Although residual stresses ...
JEGOU, Sébastien; BARRALLIER, Laurent; KUBLER, Régis; SOMERS, Marcel (Hanser, 2011)Development and evolution of compressive residual stress during nitriding treatment are studied. A model carbon iron-based alloy Fe-3wt.%Cr-0.35wt.%C was nitrided in gas at 550 °C for different times. Microstructural ...