Mode-mixity in Beam-like Geometries: Linear Elastic Cases and Local Partitioning

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Title: Mode-mixity in Beam-like Geometries: Linear Elastic Cases and Local Partitioning
Authors: Blackman, B. R. K.
Conroy, Mark
Ivankovic, Alojz
et al.
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Date: 2012
Abstract: This work is conducted as a part of a wider international activity on mixed mode fractures in beam-like geometries under the coordination of European Structural Integrity Society, Technical Committee 4. In its initial phase, it considers asymmetric double cantilever beam geometry made of a linear elastic material with varying lower arm thickness and constant bending moment applied to the upper arm of the beam. A number of relevant analytical solutions are reviewed including classical Hutchinson and Suo local and Williams global partitioning solutions. Some more recent attempts by Williams, and Wang and Harvey to reproduce local partitioning results by averaging global solutions are also presented. Numerical simulations are conducted using Abaqus package. Mode-mixity is calculated by employing virtual crack closure technique and interaction domain integral. Both approaches gave similar results and close to the Hutchinson and Suo. This is expected as in this initial phase numerical results are based on local partitioning in an elastic material which does not allow for any damage development in front of the crack tip.
Type of material: Conference Publication
Copyright (published version): 2012 the authors
Keywords: Mode-MixityLinear elastic casesLocal partitioningMixed-mode fractureAnalytical solutionNumerical simulationESIS TC4
Language: en
Status of Item: Peer reviewed
Conference Details: 15TH EUROPEAN CONFERENCE ON COMPOSITE MATERIALS, Venice, Italy, 24-28 June 2012
Appears in Collections:Mechanical & Materials Engineering Research Collection

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