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Issue J. Phys. IV France
Volume 06, Number C6, Octobre 1996
EUROMECH - MECAMAT'96
1st European Mechanics of Materials Conference on Local Approach to Fracture '86 - 96'
Page(s) C6-521 - C6-527
DOI http://dx.doi.org/10.1051/jp4:1996652

EUROMECH - MECAMAT'96
1st European Mechanics of Materials Conference on Local Approach to Fracture '86 - 96'

J. Phys. IV France 06 (1996) C6-521-C6-527
DOI: 10.1051/jp4:1996652

A Study of Near-Tip Local Parameters for Stable Crack Growth with a 3D FE-Analysis

O. Kolednik1, G.X. Shan2, 3, W.Y. Yan2 and F.D. Fischer4

1  Erich-Schmid-Institut für Festkörperphysik der Österreichischen, Akademie der Wissenschaften, Jahnstr. 12, 8700 Leoben, Austria
2  Christian-Doppler-Laboratorium für Mikromechanik der Werkstoffe, 8700 Leoben, Austria
3  VA Industrieanlagenbau, 4020 Linz, Austria
4  Christian-Doppler-Laboratorium für Mikromechanik der Werkstoffe und Institut für Mechanik der Montanuniversität Leoben, 8700 Leoben, Austria


Abstract
A 3D-FEM simulation of a fracture mechanics test is presented where the crack extension, Δa, is controlled by local Δa vs. load line displacement curves measured on different locations along the crack front. These data originate from an extensive multi-specimen JIC-test. The results of the 3D-analysis fit excellently to the experimental data and to the results of a modified two-layer model used in preceding studies. The current 3D-analysis supports the assumption that (after a short transition region) the local crack tip opening angle remains constant during growth.



© EDP Sciences 1996


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