Abstract: Based on the actual situation of vibration aging and dynamic mechanical behavior of applied material,some basic problems in previous studies were analyzed with vibration mechanics.The effects of material's yield strength,shearing strain,rotating inertia and the substructures on vibration aging during the components resonance were investigated so as to get some theoretical support to vibration aging mechanism and practical technology research.In the analysis and investigation,it was found that the material's dynamic tension yield strength was higher than the static tension yield strength by 1~2 times.Therefore,it was impossible to make the combination of residual stress and limited dynamic stress to surpass the dynamic tension yield strength.On the contrary,the dynamic shearing yield strength was lower.Consequently,the stress relaxation by vibration was resulted from interaction of residual stress,shearing stress and the shearing stress component of the tension and press stress field.