Investigation fatigue crack initiation and propagation cruciform welded joints by extended finite element method (XFEM) and implementation SED approach
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https://orcid.org/0000-0002-0726-3466
Mustafa Moussaoui
Ahmed Kellai
Dahmane Hachi
Filippo Berto
Benattou Bouchouicha
https://orcid.org/0000-0002-6051-5108
Brahim Elkhalil Hachi
https://orcid.org/0000-0002-6672-746X
Abstract
This study has used the strain energy density (SED) approach to evaluate the stress intensity factor (SIF) of cracked cruciform welded joints in Hardox 450 steel. A microstructural analysis was made of Hardox 450 steel which is composed of refined and tempered low carbon martensite. The obtained results of simulation will be compared with those provided by J-integral methode for different enriched zones and contours based on the extended finite element method (XFEM) coupled with the level set technique (LST). Crack initiation and propagation under cyclic loading have been adopted for the modeling of cruciform welded joints.
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