Shot peening is a surface treatment process in which the impact of small shots on the workpiece surface introduces compressive residual stresses, which improve the fatigue resistance of the material and extend the fatigue life of dynamically loaded components. Since the process parameters are often determined empirically in industrial practice, the aim of this thesis is to investigate the influence of selected shot peening parameters on the formation and distribution of compressive residual stresses and on material damage. An explicit dynamic simulation of shot impacts on a plate was performed in Abaqus. The influences of impact angle, shot velocity and surface coverage were analysed. The results were transferred into a static bending analysis, where the material damage was calculated using the Goodman correction, Wöhler curve and Palmgren-Miner rule. The results show that a perpendicular impact produces higher compressive stresses than an oblique one, higher shot velocity mainly increases the depth of their distribution, while the smallest impact spacing (0.05 mm), representing the highest surface coverage, provides the most homogeneous stress state. Compared to the model without it, shot peening reduces material damage by more than 70 %, confirming its beneficial effect on the fatigue life of the component.
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