Journal article
Simplified three-dimensional model for fatigue crack initiation



Publication Details
Authors:
Huang, X.; Besel, M.; Brückner-Foit, A.; Motoyashiki, Y.
Publication year:
2007
Journal:
Engineering Fracture Mechanics
Pages range:
2981-2991
Volume number:
74
Start page:
2981
End page:
2991
ISSN:
0013-7944

Abstract
A computer model based on a simplified three-dimensional model of the micro-structure is defined to simulate the inhomogeneous stress distribution and its influence on multi-crack initiation behaviour in a martensitic steel. The Tanaka Mura relation for crack initiation is used in this simulation in order to obtain number of cycles to crack initiation in each grain. A continuous crack initiation process is obtained, if the load re-distribution after crack initiation is determined by a finite element stress analysis. Characteristics of the crack patterns obtained with a 3D simulation models are compared with the results obtained with a planar model. (c) 2006 Elsevier Ltd. All rights reserved.

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