Constitutive equation for the compression of metallic hollow spheres foam

P. Lhuissier, M. Fivel, L. Salvo, Y. Brechet

Research output: Chapter in Book/Report/Conference proceedingConference PaperOther

Abstract

The mechanical behavior of metallic hollow spheres foam is less prone to strain localization than other metallic foams. Compression loading response is reproductible up to densification making these materials interesting as core material in sandwiches and profiles. To perform an optimization procedure in a structure (such as a sandwich), a macroscopic phenomenological model for the mechanical behavior model is set up. It describes the overall behaviour as the result of the coexistence of several phases describing damage progression into the material : a healthy phase, a damaged phase, and a densified phase. The model gives a description of an equivalent homogeneous material without loosing informations on irreversible mechanisms in the mesostructure. In-situ tomography experiments provide proofs for the existence of theses three phases and allow to investigate their evolution with strain.

Original languageEnglish
Title of host publicationMetFoam 2007 - Proceedings of the 5th International Conference on Porous Metals and Metallic Foams
Pages395-398
Number of pages4
Publication statusPublished - 2008
Externally publishedYes
EventInternational Conference on Porous Metals and Metallic Foams 2007 - Montreal, Canada
Duration: 5 Sep 20087 Sep 2008
Conference number: 5th

Publication series

NameMetFoam 2007 - Proceedings of the 5th International Conference on Porous Metals and Metallic Foams

Conference

ConferenceInternational Conference on Porous Metals and Metallic Foams 2007
Abbreviated titleMetFoam 2007
CountryCanada
CityMontreal
Period5/09/087/09/08

Cite this