EFFECT OF CONSTRUCTION PARAMETERS OF DOUBLE ANGLES WELDING COMPONENTS ON THE LEVEL OF STRESS CONCENTRATION OF ANGLE ENDS

Abstract

On the basis of analysis of stress-strain behaviour by the finite-element method of back-toback
double equal angle bars there are the results of the coefficient variation standards of the elastic
stresses concentration in the angel end on the back edge and point depending on construction parameter
of welding components. It is stated that the value of elastic stress concentration in the angel
end on the side of the back edge and the point has been determined by the length and the welding
leg of the welding seams, the width of the angel flange and that coefficient does not depend on the
thickness of the angel flange and the gusset plate. The setting of lateral welds on the back edge angels
on 20mm does not influence on the stress concentration. The application of end-lap weld reduces
the elastic stresses concentration on the back edge and point in 1,62–2,45 times.
Keywords: laced steel structures, stress-strain behaviour, the value of elastic stress concentration,
welded seams.