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Simulation of fatigue crack growth in welded joints

Beier, Heinz Thomas ; Schork, Benjamin ; Bernhard, Julian ; Tchoffo Ngoula, Désiré ; Melz, Tobias ; Oechsner, Matthias ; Vormwald, Michael :
Simulation of fatigue crack growth in welded joints.
In: 4th Symposium on Structural Durability in Darmstadt, 14.-15.5.2014, Darmstadt.
[ Konferenzveröffentlichung] , (2014)

Kurzbeschreibung (Abstract)

This paper gives an overview on recent research results of the Darmstadt group inside a project called IBESS. Purpose of this project is the fracture mechanics based simulation of Wöhler-curves (S-N-curves) of welded joints. Part of this project is the investigation of initial defects and imperfections of welded joints. Metallographic and fractographic investigations have been done to derive a definition of an initial crack situation. --- SzM --- Another part of IBESS gives attention to the stability of the residual stress field in a welded joint due to the transient plastic deformation behaviour under cyclic loading. Numerical simulations using Döring’s material model have been done to investigate the effect of a cyclic loading on a residual stress field in an uncracked and a cracked situation.

Typ des Eintrags: Konferenzveröffentlichung ( nicht bekannt)
Erschienen: 2014
Autor(en): Beier, Heinz Thomas ; Schork, Benjamin ; Bernhard, Julian ; Tchoffo Ngoula, Désiré ; Melz, Tobias ; Oechsner, Matthias ; Vormwald, Michael
Titel: Simulation of fatigue crack growth in welded joints
Sprache: Englisch
Kurzbeschreibung (Abstract):

This paper gives an overview on recent research results of the Darmstadt group inside a project called IBESS. Purpose of this project is the fracture mechanics based simulation of Wöhler-curves (S-N-curves) of welded joints. Part of this project is the investigation of initial defects and imperfections of welded joints. Metallographic and fractographic investigations have been done to derive a definition of an initial crack situation. --- SzM --- Another part of IBESS gives attention to the stability of the residual stress field in a welded joint due to the transient plastic deformation behaviour under cyclic loading. Numerical simulations using Döring’s material model have been done to investigate the effect of a cyclic loading on a residual stress field in an uncracked and a cracked situation.

Fachbereich(e)/-gebiet(e): 13 Fachbereich Bau- und Umweltingenieurwissenschaften
13 Fachbereich Bau- und Umweltingenieurwissenschaften > Institut für Stahlbau und Werkstoffmechanik
13 Fachbereich Bau- und Umweltingenieurwissenschaften > Institut für Stahlbau und Werkstoffmechanik > Fachgebiet Werkstoffmechanik
Veranstaltungstitel: 4th Symposium on Structural Durability in Darmstadt
Veranstaltungsort: Darmstadt
Veranstaltungsdatum: 14.-15.5.2014
Hinterlegungsdatum: 02 Jul 2014 12:02
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