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  • Author Accepted Version

    Rights statement: This is the author’s version of a work that was accepted for publication in Composite Structures. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Composite Structures, 235, 2020 DOI: 10.1016/j.compstruct.2019.111817

    Accepted author manuscript, 725 KB, PDF document

    Embargo ends: 19/12/20

    Available under license: CC BY-NC-ND

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Measurement and modelling of the elastic defection of novel metal syntactic foam composite sandwich structures in 3-point bending

Research output: Contribution to journalJournal article

Published
Article number111817
<mark>Journal publication date</mark>1/03/2020
<mark>Journal</mark>Composite Structures
Volume235
Number of pages6
Publication statusPublished
Early online date19/12/19
Original languageEnglish

Abstract

This paper presents a process for creating syntactic metal foam sandwich structures which, for the first time, manufactures both the syntactic foam core and metal face sheets in a single step. Unlike previous research, the face sheets are made from the same material, are integral with the sandwich structure and are relatively thick compared to the core. Via comparison with experimental measurements in 3-point bending, it is shown that accurate prediction of the elastic deformation of these sandwich structures necessitates FE-based modelling, but that the methodology is simple. A reliance on predictions from established analytical models, which have proven themselves accurate for foam sandwiches with thin face sheets, leads to significant over-estimations of the stiffness. Modelling, based on the FEA approach developed herein, shows that mass savings between 20 and 30% are achievable for these novel structures, produced using simple and low cost casting methods, but are dependent upon the deflection response required.

Bibliographic note

This is the author’s version of a work that was accepted for publication in Composite Structures. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Composite Structures, 235, 2020 DOI: 10.1016/j.compstruct.2019.111817