.... Conventional fatigue design for tubular joints is usually based on estimation of the stress concentration factors (SCFs) on the external weld toes using parametric equations, calculation of the associated hot spot stress and obtaining the fatigue damage ratio using S-N curves. For single sided welds...

... by the notch effect at the toe of the weld. stress distribution geometry exp loading intersection scf tubular joint axial loadmg axial loading radian hotspot stress site scf distribution upstream oil & gas brace equation chord crown position bendmg m-plane bendmg total stress...

... formulae for determining stress concentration factors. Static tests were also conducted on nine steel tubular T and Y joints to study the effect of stiffening on SCF and ultimate strength. The experimental values of SCF compare well with the analytical values using the parametric formulae. The analytical...