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Eser Yarar,A. Tamer Erturk,Sedat Karabay 대한금속·재료학회 2021 METALS AND MATERIALS International Vol.27 No.8
Surface mechanical attrition treatment (SMAT) is a method that enhances the mechanical properties of metallic materialsby generating a thin nanostructured layer on the top surface. In this study, single-shot impact behavior was modeled for the7075-T6 aluminum alloy to reach maximum values of equivalent stress, plastic strain, deformation depth, residual stressdepth, and residual stress. Finite element simulations have been carried out to analyze the efect of selected parameters onstress and strains in the component. For simulating the SMAT process, a rigid sphere on a rectangular component is modeledusing ANSYS/AUTODYN explicit dynamic solver. The plastic deformation process during SMAT was analyzed accordingto shot velocity and diameter with a dynamic explicit fnite element method (FEM). The response surface methodologywas used to evaluate the parametric results for the SMAT process. In addition, deformation behavior was evaluated after asingle-shot impact according to the restitution coefcient.