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  5. Designing the energy absorption capacity of functionally graded foam materials
 
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Designing the energy absorption capacity of functionally graded foam materials

Author(s)
Cui, Liang  
Kiernan, Stephen  
Gilchrist, M. D.  
Uri
http://hdl.handle.net/10197/4619
Date Issued
2009-05
Date Available
2013-09-27T12:14:16Z
Abstract
In this paper, a functionally graded foam model is proposed in order to improve the energy absorption characteristics offered by uniform foams. In this novel model, the characteristics of the foam (e.g., density) are varied through the thickness according to various gradient functions. The energy absorption ability of the novel foam is explored by performing finite element simulations of physical impact tests on flat specimens of the functionally graded foam materials. Energy absorbing capacity with respect to parameters including gradient functions, density difference, average density, and impact energy, is explored in detail. It is illustrated that the functionally graded foam is superior in energy absorption to the uniform foam and that convex gradients perform better than concave gradients. The performance of such foams can be improved more if the density difference is enlarged. These findings provide valuable suggestions in the design of high performance energy absorption polymeric foams.
Type of Material
Journal Article
Publisher
Elsevier
Journal
Materials Science and Engineering: A
Volume
507
Issue
1-2
Start Page
215
End Page
225
Copyright (Published Version)
2009 Elsevier
Subjects

Functionally graded f...

Constitutive model

Energy absorption

Impact test

DOI
10.1016/j.msea.2008.12.011
Language
English
Status of Item
Peer reviewed
This item is made available under a Creative Commons License
https://creativecommons.org/licenses/by-nc-nd/3.0/ie/
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Revised MS_MSEA done.pdf

Size

486.9 KB

Format

Adobe PDF

Checksum (MD5)

040cea1f68991730c1ba86be660a3baa

Owning collection
Mechanical & Materials Engineering Research Collection

Item descriptive metadata is released under a CC-0 (public domain) license: https://creativecommons.org/public-domain/cc0/.
All other content is subject to copyright.

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