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Simulating shot peen forming with eigenstrains

Pierre A. Faucheux, Frédérick P. Gosselin and Martin Lévesque

Article (2018)

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Cite this document: Faucheux, P. A., Gosselin, F. P. & Lévesque, M. (2018). Simulating shot peen forming with eigenstrains. Journal of Materials Processing Technology, 254, p. 135-144. doi:10.1016/j.jmatprotec.2017.11.036
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Abstract

Shot peen forming is a cold work process used to shape thin metallic components by bombarding them with small shots at high velocities. Several simulation procedures have been reported in the literature for this process, but their predictive capabilities remain limited as they systematically require some form of calibration or empirical adjustments. We intend to show how procedures based on the concept of eigenstrains, which were initially developed for applications in other fields of residual stress engineering, can be adapted to peen forming and stress-peen forming. These tools prove to be able to reproduce experimental results when the plastic strain field that develop inside a part is known with sufficient accuracy. They are, however, not mature enough to address the forming of panels that are free to deform during peening. For validation purposes, we peen formed several 1 by 1 m 2024-T3 aluminum alloy panels. These experiments revealed a transition from spherical to cylindrical shapes as the panel thickness is decreased for a given treatment, that we show results from an elastic instability.

Uncontrolled Keywords

Peen forming, Eigenstrains, 2024 aluminum alloy, Elastic instability

Open Access document in PolyPublie
Subjects: 2000 Science et technologie des matériaux > 2003 Métallurgie, métaux et alliages
2100 Génie mécanique > 2100 Génie mécanique
Department: Département de génie mécanique
Research Center: CREPEC - Centre de recherche sur les systèmes polymères et composites à haute performance
Funders: Airbus
Date Deposited: 13 Dec 2017 11:55
Last Modified: 24 Oct 2018 16:12
PolyPublie URL: https://publications.polymtl.ca/2822/
Document issued by the official publisher
Journal Title: Journal of Materials Processing Technology (vol. 254)
Publisher: Elsevier
Official URL: https://doi.org/10.1016/j.jmatprotec.2017.11.036

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