Chuan-Zhen Yang

Residual stress distribution and evolution in gear shaft journals induced by mechanical roll hardening: experimental characterization and numerical prediction

To mitigate residual tensile stresses in the surface layer of machined 30CrMoA gear journal shafts, which readily initiate fatigue cracks and degrade in-service reliability, this study investigates a localized deep rolling hardening process for the journal diameter. Combining finite element simulation with X-ray diffra...