Discrete element simulation on the behaviour of random hollow sphere metal foams

Alexandre Fallet, Christophe L. Martin, Luc Salvo, Yves Brechet

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

Abstract

The mechanical behaviour of metallic foams, made of hollow spheres that are sintered together, is simulated using discrete element simulations. Numerical random packings are generated using the discrete element code dp3D. The contacts between hollow spheres are modelled as bonds which deform elasto-plastically. Contact laws, which describe the normal and tangential forces and the resisting moments at these bonds, are determined using Finite Element simulations on a pair of hollow spheres. Using simple compression tests, we show that the main parameters that dictate the elasto-plastic macroscopic behaviour of the random packing of hollow sphere are the contact size between the bonded spheres and, to a less extent, the thickness of the hollow sphere walls.

Original languageEnglish
Title of host publicationProceedings of the Euro International Powder Metallurgy Congress and Exhibition, Euro PM 2008
PublisherEuropean Powder Metallurgy Association (EPMA)
Pages189-194
Number of pages6
ISBN (Print)9781899072033
Publication statusPublished - 2008
Externally publishedYes
EventEuropean International Powder Metallurgy Congress and Exhibition 2008 - Mannheim, Germany
Duration: 29 Sep 20081 Oct 2008

Publication series

NameProceedings of the Euro International Powder Metallurgy Congress and Exhibition, Euro PM 2008
Volume2

Conference

ConferenceEuropean International Powder Metallurgy Congress and Exhibition 2008
Abbreviated titleEuro PM 2008
Country/TerritoryGermany
CityMannheim
Period29/09/081/10/08

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