Stress concentration in butt welded joints made without the use of linings for the formation of the root of the seam

Abstract

A method for calculating stresses on the concavity contour of a butt welded joint made without the use of shims to form the weld root, which takes into account both the eccentricity of the axial load application and the concavity radius, is developed. The results of calculations using analytical formulas obtained by the proposed method are in good agreement with the results of numerical calculations by the finite element method.

Keywords:

• Butt welded joint
• convex–concave seam
• stress conservation
• hypothesis of broken section
• eccentricity