@incollection{eprints1927,
           title = {Theoretical and numerical investigation on internal instability phenomena in composite materials},
            year = {2005},
          author = {Alberto Carpinteri and Marco Paggi and Giorgio Zavarise},
           pages = {5928--5933},
       booktitle = {Proceedings of the 11th International Conference on Fracture 2005 (ICF11)},
       publisher = {Curran Associates},
            note = {11th International Conference on Fracture, Turin, Italy, March 20-25, 2005},
             url = {http://eprints.imtlucca.it/1927/},
        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.}
}