Dimensionless Stress Intensity Factors of An Annular Notched Shaft

摘要

The tip radius ρ, depth t and field angle α of notch and the geometrical sizes a and b of shaft are looked as descriptive parameters in the annular notched shaft. Taken the crack, blunt crack and notch as breach, the stress field and displacement field near the tip of breach which serve dimensionless factor f_α(a/b) as descriptive parameter are obtained. The effects of parameters ρ, t and α to f_α{a/b) are analyzed. The connections between stress intensity factor of crack and stress concentrator factor of notch, between sharp V-notch and crack, between V-notch and U-notch have been founded.