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Type: Conference paper
Title: Coupled fracture mode associated with anti-plane loading of cracks and notches
Author: Berto, F.
Lazzarin, P.
Pook, L.
Kotousov, A.
Citation: Proceedings, 13th International Conference on Fracture 2013, ICF13, 2013, vol.4, pp.3110-3119
Publisher: ICF
Issue Date: 2013
Conference Name: 13th International Conference on Fracture (ICF13) (16 Jun 2013 - 21 Jun 2013 : Beijing, China)
Statement of
Filippo Berto, Paolo Lazzarin, L.Pook, A. Kotousov
Abstract: The purpose of this paper is to investigate by means of the 3D Finite Element method a coupled fracture mode generated by anti-plane loading of a straight through-the-thickness crack in a linear elastic plate. This coupled fracture mode represents one of three-dimensional phenomena, which are currently largely ignored in numerical simulations and failure assessment of structural components weakened by cracks. It arises due to the boundary conditions on the plate free surfaces, which negate the transverse shear stress components corresponding to classical mode III. Instead, a new singular stress state in addition to the well-known 3D corner singularity is generated. This singular stress state (or coupled fracture mode) can affect or contribute significantly to the fracture initiation conditions. The coupled singular mode exists even if the applied anti-plane loading produces no singularities (K III = 0). In this case there is a strong thickness effect on the intensity of the coupled fracture mode.
Keywords: Crack
anti-plane loading
coupled fracture mode
3D modelling
Rights: Copyright status unknown
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Mechanical Engineering conference papers

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