Table 1 Expressions of S–N curve of steel bolts as per different standards [26,27,28,29,30,31]
From: Method for Evaluating Bolt Competitive Failure Life Under Composite Excitation
Standard | Tension S–N curve | Tensile fatigue strength | Shear S–N curve | Shear fatigue strength |
|---|---|---|---|---|
AISC-LRFD 99, ANSI/AISC 360-16, AASHTO:2012 | Δσ3N = 1.28 × 1011 | \({\left[\Delta \sigma \right]}_{{2\times 10}^{6}}=40\space\mathrm{ N}/{\mathrm{mm}}^{2}\) | Δτ6N = 1.62 × 1017 | \({\left[\Delta \tau \right]}_{{2\times 10}^{6}}=65.5\space\mathrm{ N}/{\mathrm{mm}}^{2}\) |
BS 7608 | Δσ3N = 3.51 × 1011 | \({\left[\Delta \sigma \right]}_{{2\times 10}^{6}}=56\space\mathrm{ N}/{\mathrm{mm}}^{2}\) | Δτ5N = 2 × 1016 | \({\left[\Delta \tau \right]}_{{2\times 10}^{6}}=100\space\mathrm{ N}/{\mathrm{mm}}^{2}\) |
EN1993-1-9 | Δσ3N = 2.5 × 1011 | \({\left[\Delta \sigma \right]}_{{2\times 10}^{6}}=50\space\mathrm{ N}/{\mathrm{mm}}^{2}\) | Δτ5N = 2 × 1016 | \({\left[\Delta \tau \right]}_{{2\times 10}^{6}}=100\space\mathrm{ N}/{\mathrm{mm}}^{2}\) |
AS 4100 | Δσ3N = 9.33 × 1010 | \({\left[\Delta \sigma \right]}_{{2\times 10}^{6}}=36\space\mathrm{ N}/{\mathrm{mm}}^{2}\) | Δτ5N = 2 × 1016 | \({\left[\Delta \tau \right]}_{{2\times 10}^{6}}=100\space\mathrm{ N}/{\mathrm{mm}}^{2}\) |