Numerical Parametric Study of Stress Concentration along the Intersection of Tubular KT-joints Subjected to Balanced Axial Loading

摘要

In this article, the effect of dimensionless geometrical parametersincluding τ, γ, β and ζ, and brace-to-chord inclination angle θ on thedistribution of stress concentration factors (SCFs) along the weld toe oftubular KT-joints under the balanced axial loading is studied.Thereafter, a parametric equation is proposed for determining thedistribution of SCFs along the 360° spatial curve of weld toe. Theproposed equation satisfies the acceptance criteria recommended byUK DoE, and consequently can reliably be used for design purposes.This is the first research proposing a parametric equation for predictingthe SCF distribution along the brace-chord intersection of KT-joints.