Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5014191 | Engineering Fracture Mechanics | 2016 | 13 Pages |
Abstract
Fracture characterization of bovine cortical bone under mixed-mode IÂ +Â II loading was performed in this work. With this aim, a miniaturized version of the mixed-mode bending testing setup was constructed. Three different mode ratios were analysed to cover a wide range of mode mixities, thus leading to an appropriate definition of fracture criterion of bovine cortical bone under mixed-mode IÂ +Â II loading. A suitable data reduction scheme based on crack equivalent concept was used to get the Resistance-curves of the strain energy release rate components. The proposed procedure was validated by means of a mixed-mode IÂ +Â II cohesive zone model using a bilinear softening law. In general, it was verified that the numerical load-displacement as well as the Resistance-curves are in agreement with the global trend obtained experimentally, thus validating the proposed procedure concerning mixed-mode IÂ +Â II fracture characterization.
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Authors
F.A.M. Pereira, M.F.S.F. de Moura, N. Dourado, J.J.L. Morais, F.G.A. Silva, M.I.R. Dias,