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Metals 2012, 2(1), 65-78; doi:10.3390/met2010065

Crack Propagation in Honeycomb Cellular Materials: A Computational Approach

Politecnico di Torino, Department of Structural, Geotechnical and Building Engineering, Corso Duca degli Abruzzi 24, 10129 Torino, Italy
Received: 29 November 2011 / Revised: 13 January 2012 / Accepted: 2 February 2012 / Published: 13 February 2012
(This article belongs to the Special Issue Nanocrystalline Metals and Alloys)
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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. View Full-Text
Keywords: honeycomb cellular materials; finite element method; linear and nonlinear fracture mechanics honeycomb cellular materials; finite element method; linear and nonlinear fracture mechanics

Figure 1

This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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Paggi, M. Crack Propagation in Honeycomb Cellular Materials: A Computational Approach. Metals 2012, 2, 65-78.

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