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Crack propagation in honeycomb cellular materials: a computational approach

Paggi, Marco Crack propagation in honeycomb cellular materials: a computational approach. Metals, 2 (4). pp. 65-78. ISSN 2075-4701 (2012)

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Computational models based on the finite element method and linear or nonlinear fracture mechanics are herein proposed to study the mechanical response of functionally designed cellular components. It is demonstrated that, via a suitable tailoring of the properties of interfaces present in the meso- and micro-structures, the tensile strength can be substantially increased as compared to that of a standard polycrystalline material. Moreover, numerical examples regarding the structural response of these components when subjected to loading conditions typical of cutting operations are provided. As a general trend, the occurrence of tortuous crack paths is highly favorable: stable crack propagation can be achieved in case of critical crack growth, whereas an increased fatigue life can be obtained for a sub-critical crack propagation.

Item Type: Article
Identification Number: 10.3390/met2010065
Uncontrolled Keywords: honeycomb cellular materials; finite element method; linear and nonlinear fracture mechanics
Subjects: T Technology > TJ Mechanical engineering and machinery
Research Area: Computer Science and Applications
Depositing User: Prof Marco Paggi
Date Deposited: 03 Dec 2013 14:13
Last Modified: 09 Oct 2014 09:20
URI: http://eprints.imtlucca.it/id/eprint/2012

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