Effect of cell-size on the energy absorption features of closed-cell aluminium foams

Hdl Handle:
http://hdl.handle.net/10034/620234
Title:
Effect of cell-size on the energy absorption features of closed-cell aluminium foams
Authors:
Nammi, Sathish K.; Edwards, Gerard; Shirvani, Hassan
Abstract:
The effect of cell-size on the compressive response and energy absorption features of closed-cell aluminium (Al) foam were investigated by finite element method. Micromechanical models were constructed with a repeating unit-cell (RUC) which was sectioned from tetrakaidecahedra structure. Using this RUC, three Al foam models with different cell-sizes (large, medium and small) and all of same density, were built. These three different cell-size pieces of foam occupy the same volume and their domains contained 8, 27 and 64 RUCs respectively. However, the smaller cell-size foam has larger surface area to volume ratio compared to other two. Mechanical behaviour was modelled under uniaxial loading. All three aggregates (3D arrays of RUCs) of different cell-sizes showed an elastic region at the initial stage, then followed by a plateau, and finally, a densification region. The smaller cell size foam exhibited a higher peak-stress and a greater densification strain comparing other two cell-sizes investigated. It was demonstrated that energy absorption capabilities of smaller cell-size foams was higher compared to the larger cell-sizes examined.
Affiliation:
Anglia Ruskin University, University of Chester, Anglia Ruskin University,
Citation:
Nammi, S. K., Edwards, G., & Shirvani, H. (2016). Effect of cell-size on the energy absorption features of closed-cell aluminium foams. Acta Astronautica, 128, 243-50.
Publisher:
Elsevier
Journal:
Acta Astronautica
Publication Date:
2-Jul-2016
URI:
http://hdl.handle.net/10034/620234
DOI:
10.1016/j.actaastro.2016.06.047
Additional Links:
http://www.sciencedirect.com/science/article/pii/S0094576516304131
Type:
Article
Language:
en
Appears in Collections:
Electronic and Electrical Engineering

Full metadata record

DC FieldValue Language
dc.contributor.authorNammi, Sathish K.en
dc.contributor.authorEdwards, Gerard-
dc.contributor.authorShirvani, Hassan-
dc.date.accessioned2016-11-01T09:50:28Z-
dc.date.available2016-11-01T09:50:28Z-
dc.date.issued2016-07-02-
dc.identifier.citationNammi, S. K., Edwards, G., & Shirvani, H. (2016). Effect of cell-size on the energy absorption features of closed-cell aluminium foams. Acta Astronautica, 128, 243-50.en
dc.identifier.doi10.1016/j.actaastro.2016.06.047-
dc.identifier.urihttp://hdl.handle.net/10034/620234-
dc.description.abstractThe effect of cell-size on the compressive response and energy absorption features of closed-cell aluminium (Al) foam were investigated by finite element method. Micromechanical models were constructed with a repeating unit-cell (RUC) which was sectioned from tetrakaidecahedra structure. Using this RUC, three Al foam models with different cell-sizes (large, medium and small) and all of same density, were built. These three different cell-size pieces of foam occupy the same volume and their domains contained 8, 27 and 64 RUCs respectively. However, the smaller cell-size foam has larger surface area to volume ratio compared to other two. Mechanical behaviour was modelled under uniaxial loading. All three aggregates (3D arrays of RUCs) of different cell-sizes showed an elastic region at the initial stage, then followed by a plateau, and finally, a densification region. The smaller cell size foam exhibited a higher peak-stress and a greater densification strain comparing other two cell-sizes investigated. It was demonstrated that energy absorption capabilities of smaller cell-size foams was higher compared to the larger cell-sizes examined.en
dc.language.isoenen
dc.publisherElsevieren
dc.relation.urlhttp://www.sciencedirect.com/science/article/pii/S0094576516304131en
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/*
dc.subjectAluminium foam, Cell-size, Energy absorption, Repeating unit-cell, Micromechanicalen
dc.titleEffect of cell-size on the energy absorption features of closed-cell aluminium foamsen
dc.typeArticleen
dc.contributor.departmentAnglia Ruskin University, University of Chester, Anglia Ruskin University,en
dc.identifier.journalActa Astronauticaen
dc.date.accepted2016-06-25-
or.grant.openaccessYesen
rioxxterms.funderUnfundeden
rioxxterms.identifier.projectUnfundeden
rioxxterms.versionAMen
rioxxterms.licenseref.startdate2018-07-02en
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