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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 (2014):
Simulation of fatigue crack growth in welded joints.
pp. 1-18, 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 ; Schork, Benjamin ; Bernhard, Julian ; Tchoffo Ngoula, Désiré ; Melz, Tobias ; Oechsner, Matthias ; 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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