%0 Book Section
%A Carpinteri, Alberto
%A Paggi, Marco
%A Zavarise, Giorgio
%B Proceedings of the 11th International Conference on Fracture 2005 (ICF11)
%D 2005
%F eprints:1927
%I Curran Associates
%P 5928-5933
%T Theoretical and numerical investigation on internal instability phenomena in composite materials
%U http://eprints.imtlucca.it/1927/
%X 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.
%Z 11th International Conference on Fracture, Turin, Italy, March 20-25, 2005