CUED Publications database

Creep response of sandwich beams with a metallic foam core

Chen, C and Fleck, NA and Ashby, MF (2002) Creep response of sandwich beams with a metallic foam core. Advanced Engineering Materials, 4. pp. 777-780. ISSN 1438-1656

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The creep response of metallic foam sandwich beams in 3-point bend is investigated numerically for the case of a metallic foam core and two steel faces. The face sheets are treated as elastic, while the foam core is modeled by a viscoplastic extension of the Deshpande-Fleck yield surface. This power-law creeping constitutive law has been implemented within the commercial finite element code ABAQUS. It is found that the beams creep by a variety of competing mechanisms, depending upon the choice of material properties and the geometric parameters. A failure map is constructed and effect of rate dependence on the load-deflection curves is quantified, and compared against the available experimental data.

Item Type: Article
Divisions: Div C > Materials Engineering
Depositing User: Cron Job
Date Deposited: 17 Jul 2017 19:39
Last Modified: 22 May 2018 07:11