Precise 3D crack growth simulations

Weber, W., Steinmann, P. and Kuhn, G. (2008) Precise 3D crack growth simulations. International Journal of Fracture, 149(2), pp. 175-192. (doi: 10.1007/s10704-008-9241-3)

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Abstract

The continuous growth of 3D cracks under cyclic loading conditions is considered within a discrete simulation procedure. It is performed within the framework of linear elastic fracture mechanics. An incremental procedure is applied to consider the non-linear behavior of crack growth within the simulation. In each increment the direction and magnitude of the crack propagation for each point along the crack front are needed to define the new crack front. Within the present context the crack deflection results from the maximum tangential stress criterion and the crack extension is obtained by the evaluation of a crack propagation rate. To simulate the crack propagation as exactly as possible the evolution of the stress field between two consecutive crack fronts is taken into account. The analysis of the changing stress field is utilized for optimization of the predicted crack fronts. The whole procedure is realized in terms of a predictor - corrector scheme. Numerical examples are presented to demonstrate the benefits of this concept.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Steinmann, Professor Paul
Authors: Weber, W., Steinmann, P., and Kuhn, G.
College/School:College of Science and Engineering > School of Engineering > Infrastructure and Environment
Journal Name:International Journal of Fracture
Publisher:Springer
ISSN:0376-9429
ISSN (Online):1573-2673
Published Online:17 July 2008
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