Japan Society of Civil Engineers 2020 Annual Meeting
Sep 9 - Sep 11, 2020Held Online
Japan Society of Civil Engineers 2020 Annual Meeting
Sep 9 - Sep 11, 2020Held Online
[I-50]Parametric Formula for Stress Concentration Factor of Fillet Weld Joints with Spline Bead Shape
〇Yixun Wang1, Seiichiro Tsutsumi1(1.Osaka University, Joining and Welding Research Institute)
Keywords:
parametric formulae,stress concentration factor,fillet weld,weld model,probability analysis
Parametric Formula for Stress Concentration Factor of Fillet Weld Joints with Spline Bead Shape
The parametric studies of stress concentration factor for fillet weld were carried out based on the spline model. A large set of FE analysis were conducted and parametric formulae for SCF of fillet weld were proposed by regression analysis. The severity of stress concentration was compared based on probability distribution. The results showed that deviation rate of SCF by proposed parametric formulae compared to FE analysis was proved to be less than 10%. The stress concentration of cruciform joints under tensile stress was the most serious if assessed by confidence interval of 95% survival probability.
The parametric studies of stress concentration factor for fillet weld were carried out based on the spline model. A large set of FE analysis were conducted and parametric formulae for SCF of fillet weld were proposed by regression analysis. The severity of stress concentration was compared based on probability distribution. The results showed that deviation rate of SCF by proposed parametric formulae compared to FE analysis was proved to be less than 10%. The stress concentration of cruciform joints under tensile stress was the most serious if assessed by confidence interval of 95% survival probability.