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Theoretical and numerical investigation on internal instability phenomena in composite materials

Carpinteri, Alberto and Paggi, Marco Theoretical and numerical investigation on internal instability phenomena in composite materials. In: Atti del 17° Convegno Nazionale del Gruppo Italiano Frattura (IGF). Gruppo Italiano Frattura, pp. 136-141. ISBN 8890108096 (2004)

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Abstract

Instability phenomena occurring in the microstructure of composite materials are investigated. To this aim, a complete description of the mechanical behavior of bi-material interfaces in composite materials requires the definition of both a cohesive law involving damage for the debonding stage, and a contact model during the closure of the interface. Both formulations are herein presented and implemented in the FE code FEAP. Numerical examples showing the transition from a snap-back instability to a stable mechanical response are presented.

Item Type: Book Section
Additional Information: 17° Convegno Nazionale del Gruppo Italiano Frattura IGF17, Bologna, Italy, June 16-18, 2004
Subjects: T Technology > TJ Mechanical engineering and machinery
Research Area: Computer Science and Applications
Depositing User: Prof Marco Paggi
Date Deposited: 21 Nov 2013 14:56
Last Modified: 09 Oct 2014 09:20
URI: http://eprints.imtlucca.it/id/eprint/1922

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