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Simulation of fatigue crack growth in welded joints

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

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.

Item Type: Conference or Workshop Item
Erschienen: 2014
Creators: Beier, Heinz Thomas and Schork, Benjamin and Bernhard, Julian and Tchoffo Ngoula, Désiré and Melz, Tobias and Oechsner, Matthias and Vormwald, Michael
Title: Simulation of fatigue crack growth in welded joints
Language: English
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.

Divisions: 13 Department of Civil and Environmental Engineering Sciences
13 Department of Civil and Environmental Engineering Sciences > Institute of Steel Constructions and Material Mechanics
13 Department of Civil and Environmental Engineering Sciences > Institute of Steel Constructions and Material Mechanics > Fachgebiet Werkstoffmechanik
Event Title: 4th Symposium on Structural Durability in Darmstadt
Event Location: Darmstadt
Event Dates: 14.-15.5.2014
Date Deposited: 02 Jul 2014 12:02
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