Assessment of asymmetric crack initiation in open-hole plates using a coupled stress and energy criterion |
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| Authors: | Philipp L Rosendahl Philipp Weißgraeber Nicolas Stein Wilfried Becker |
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| Institution: | Technische Universität Darmstadt, Fachgebiet Strukturmechanik, Franziska-Braun-Straße 7, 64287 Darmstadt, Germany |
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| Abstract: | An application of the finite fracture mechanics concept to open-hole plates subject to combined tensile and bending loading is presented. In finite fracture mechanics, the simultaneous satisfaction of both, a stress and an energy criterion, is enforced as a condition for crack initiation. Efficient modeling and closed-form expressions for the dependence of the stress and energy quantities on governing structural and material parameters allow for a comprehensive numerical analysis of the onset of asymmetric crack patterns. The obtained failure load predictions are found to agree well with a cohesive zone model and experimental data from literature. (© 2016 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim) |
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