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Journal of materials engineering and performance

Comparison of the stress intensity factor of load-carrying cruciform welded joints

with different geometries

A Al-Mukhtar, H Biermann, S Henkel, P Hübner

Abstract

The investigation of fatigue strength needs an accurate solution and reliable values of the

stress intensity factor (SIF). In this study, SIF of load-carrying cruciform welded joints

has been evaluated using finite element method (FEM), and compared with the available

solutions from literature. Load-carrying cruciform welded joints with isosceles triangles

and non-isosceles triangle fillet weld shapes were considered and have been analyzed by

the FEM-based simulator FRANC2D program. Moreover, the effects of plate thickness

and penetration depth have been considered. The aim of this work was to study the

effects of these geometrical variables on fatigue SIF of the load-carrying welded joints

with lack of penetration. The ability of FRANC2D to find an appropriate SIF solution is

s Journal of materials engineering and performancehown and compared with available solutions.