Based on ABAQUS finite element analysis,a direct relationship between the shape parameters and ultrasonic impact parameters of the steel cruciform welded joint and the notch stress concentration factor was established.The effect of ultrasonic impact treatment under different parameter combinations and the influence of the notch stress concentration factor after impact were analyzed,and the calculation formulas for the notch radius ρ,notch depth h,and notch stress con-centration factor Kt of the welded joint after ultrasonic impact treatment were fitted.The results show that the formula fits well and can be used to predict the notch stress concentration factor of cruciform welded joints after ultrasonic impact treatment.
finite element analysiscruciform welded jointsultrasonic impact treatmentnotch stress concen-tration factor
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