TY  - CHAP
N1  - 17° Convegno Nazionale del Gruppo Italiano Frattura IGF17, Bologna, Italy, June 16-18, 2004
ID  - eprints1922
T2  - Atti del 17° Convegno Nazionale del Gruppo Italiano Frattura (IGF)
EP  - 141
Y1  - 2004///
AV  - public
TI  - Theoretical and numerical investigation on internal instability phenomena in composite materials
UR  - http://eprints.imtlucca.it/1922/
PB  - Gruppo Italiano Frattura
SN  - 8890108096
A1  - Carpinteri, Alberto
A1  - Paggi, Marco
SP  - 136
N2  - 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.
ER  -