Application of shot peening to case-hardened steel gears: the effect of gradient material properties and component geometry

Shot peening is a mechanical surface treatment widely utilized to enhance the fatigue strength of gears by surface work hardening and inducing compressive residual stresses while also altering the surface roughness. This study is aimed at developing a detailed numerical model of dual shot peening on case hardened gears by considering the variation of material properties through the thickness. Two different approaches were implemented to estimate...