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Simulation of LSP Processing in 2024-T351 Aluminum Alloy
1 : Lab of Mechanics and Physical Materials, Department of Mechanical Engineering, University of Sidi Bel Abbes
2 : Lab of Materials and Reactive Systems, Department of Mechanical Engineering, University of Sidi Bel Abbes
3 : Department of Mechanical Engineering, University of Relizane
4 : Department of Materials Science and Metallurgical Engineering, University of Pretoria
This paper is entirely devoted to the numerical modeling of the LSP process. First, we introduce the parameters required for numerical simulation based on the finite element method. One of our main objectives was to describe the fluctuations (or heterogeneities) in the residual stress field induced by a single laser impact. The numerically obtained residual stress profiles show good agreement with experimental results. LSP generates a layer of compressive residual stresses on the workpiece, with a thickness that can exceed a millimeter. The stresses are generally maximal at the surface and gradually decrease in depth.
