Energy release rate and its mode partition in layered plates are analysed by using an improved laminated plate model. The adhesion between layers is modelled by means of a linear interface acting in the opening and sliding failure mode directions. Stress singularities at the crack tip are recovered when the stiffness of the interface approaches infinity. Kirchhoff or Reissner-Mindlin plate models are employed to describe the layers. Analytical solutions of the relevant governing equations are obtained through a variational formulation of an augmented total potential energy, in which the stiffness of the interface introduces kinematics constraints in the form of a penalty functional. Closed form solutions for energy release rates are given evidencing the effectiveness and the simplicity of the proposed model. Comparisons with fracture mechanics results-when available-are shown discussing the validity of the proposed mechanical model to predict mode partition. Interesting features emerging with the introduction of the layer-wise Reissner-Mindlin model are also highlighted, particularly with reference to coupling terms arising from shear effects. (C) 2001 Elsevier Science Ltd. All rights reserved.
Mixed mode delamination in plates: a refined approach / Bruno, Domenico; Greco, Fabrizio. - In: INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES. - ISSN 0020-7683. - 38:50-51(2001), pp. 9149-9177.
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|Titolo:||Mixed mode delamination in plates: a refined approach|
|Data di pubblicazione:||2001|
|Citazione:||Mixed mode delamination in plates: a refined approach / Bruno, Domenico; Greco, Fabrizio. - In: INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES. - ISSN 0020-7683. - 38:50-51(2001), pp. 9149-9177.|
|Appare nelle tipologie:||1.1 Articolo in rivista|