8th. World Congress on Computational Mechanics (WCCM8)
5th. European Congress on Computational Methods in Applied Sciences and Engineering (ECCOMAS 2008)
June 30 – July 5, 2008
DAMAGE AND INTERFACIAL DELAMINATION MODELLING IN
D. BRUNO*, FRÉDÉRIC LEBON†
Department of Structural Engineering
University of Calabria, Via P. Bucci, Cubo 39C
87030 Rende (CS) ITALY
email: [email protected]
Université de Provence/Laboratoire de Mécanique et d'Acoustique
31 Chemin Joseph Aiguier 13402 Marseille Cedex 20, FRANCE
email: [email protected], web:lma.cnrs-mrs.fr
Dipartimento di Meccanica, Strutture, A. & T.
Università degli Studi di Cassino, Via G. Di Biasio 43
03043 Cassino (FR), ITALY
email: [email protected]
Key words: continuum damage mechanics, delamination, micromechanics, computational
modeling, interface model, mixed mode, composite materials, models of failure, crack
Despite their high stiffness and strength properties in relation to weight, composite materials
are susceptible to damage and/or delamination, the latter kind of phenomenon occurring
especially when they are characterized by a laminated structure. Damage may occur in the
form of micro-cracks and voids, and usually leads to a macroscopic loss of stiffness and
strength. Delamination is a typical kind of interfacial fracture phenomenon which occurs in
laminated composite materials, often accompanied with intra-laminar damage, and may lead
to a catastrophic structural collapse.
A notable effort has been devoted to the numerical and theoretical modelling in the last
decades but a number of aspects need to be further investigated. These aspects include the
choice of a computational efficient analysis able to include both the accuracy of a continuum
formulation and the effectiveness of structural (beam or plate) models, the problem of an
effective crack initiation criterion, the notable importance of an appropriate interfacial crack
propagation modelling in mixed-mode condition, multiple delaminations, crack propagation
in dynamic regime, instability effects like fibre buckling and localised deformations, the
formulation of appropriate macroscopic constitutive relations taking into account damage in
the micro-scale, non-linear and irreversible processes accompanying crack propagation, multi-
scale analysis (see, for example, references [1-7]).
The mini-symposium aims to bring together scientists working in the field of composite
materials, in order to identify the fundamental advances and new ideas in this research field.
D. Bruno, F. Lebon and E. Sacco.
Contributions to the mini-symposium are encouraged dealing both with basic modelling and
computational problems and with specific aspects of engineering interest.
For any further request, please contact
 D. Bruno - F. Greco - P. Lonetti, “A coupled interface-multilayer approach for mixed mode
delamination and contact analysis in laminated composites”, Int. J. Solids and Structures, Vol.
40, pp. 7245-7268 (2003).
 D. Bruno, F. Greco, P. Lonetti: “A Delamination Modelling Technique Based On Plate And
Interface Theories For 3D Laminated Structures” European Journal of Mechanics A/Solids, Vol.
24, pp. 127-149 (2005).
 D. Bruno, R. Carpino, F. Greco “Modelling of mixed mode debonding in FRP reinforced beams”.
Composites Science and Technology ,Vol. 67, pp. 1459-1474 (2007).
 A. Caporale, R. Luciano, E. Sacco “Micromechanical analysis of interfacial debonding in
unidirectional fiber-reinforced composites, Computers & Structures, Vol. 84, pp. 2200−2211
 I.S. Raju, Jr. J.H. Crews, M.A. Aminpour “Convergence of strain energy release rate components
for edge-delaminated composite” Eng Fract Mech, Vol. 30, pp. 383–96 (1988).
 Z. Zou, S.R. Reid, S. Li “A continuum damage model for delamintion in laminated composites”
Journal of the Mechanics and Physics of Solids, Vol. 51, pp.333-356 (2003).
 J.W. Hutchinson, Z. Suo “Mixed mode cracking in layered materials” Adv Appl Mech, 28. New
York: Academic Press (1992).
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