Abstract
Shot Peening is common industrial cold-working process. It is widely used in several industrial fields particularly in automotive, aerospace and marine industries. This treatment is applied to enhance the fatigue performance of metallic components by: (i) retarding the crack growth due to the induced compressive residual stresses fields and (ii) inhibiting the crack initiation through the surface work-hardening. However, this process needs to be carefully controlled in order to avoid over-peening cases. The aim of the current study is to develop a dynamic and multi-impact shot peening process’s model using the finite elements method. It is leading to predict the initial shot peening surface properties, which are classified, into three categories: (i) the outer layers compressive residual stresses, (ii) the induced plastic deformations and (iii) the superficial damage. To validate the proposed model, the obtained numerical results were compared with experimental ones analyzed by X-ray diffraction (XRD) for three materials the aeronautical-based Nickel super-alloy material Waspaloy and the AISI 316L stainless. The predictions are in good correlation and physically consistent with the experimental investigations. This proposed finite elements model is very interesting for engineering to predict the fatigue behavior of mechanical shot-peened components and to optimize the operating parameters of this process.
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Seddik, R., Atig, A., Ben Sghaier, R., Fathallah, R. (2019). Finite Element Modeling of Shot Peening Process. In: Fakhfakh, T., Karra, C., Bouaziz, S., Chaari, F., Haddar, M. (eds) Advances in Acoustics and Vibration II. ICAV 2018. Applied Condition Monitoring, vol 13. Springer, Cham. https://doi.org/10.1007/978-3-319-94616-0_27
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DOI: https://doi.org/10.1007/978-3-319-94616-0_27
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