令和2年度土木学会全国大会第75回年次学術講演会
2020年9月9日〜9月11日オンライン開催
令和2年度土木学会全国大会第75回年次学術講演会
2020年9月9日〜9月11日オンライン開催
[I-50]Parametric Formula for Stress Concentration Factor of Fillet Weld Joints with Spline Bead Shape
〇王 益遜1、堤 成一郎1(1.大阪大学, 接合科学研究所)
キーワード：
パラメトリック公式、応力集中係数、隅肉継手、継手モデル、確率分析
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.