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.
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.
