Study of cell irregularity effects on the compression of closed-cell foams

Closed-cell aluminum foam is widely used as energy absorbing material. The cell regularity profoundly affects the mechanical behavior of this material. To investigate the influence of irregularity on elastic and plastic behavior of closed-cell foams, the compression behavior of Voronoi foams was sim...

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Main Authors: Shi, Xiaopeng, Liu, Shuangyan, Nie, Hailiang, Lu, Guoxing, Li, Yulong
Other Authors: School of Mechanical and Aerospace Engineering
Format: Article
Language:English
Published: 2019
Subjects:
Online Access:https://hdl.handle.net/10356/90290
http://hdl.handle.net/10220/48484
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-902902023-03-04T17:17:39Z Study of cell irregularity effects on the compression of closed-cell foams Shi, Xiaopeng Liu, Shuangyan Nie, Hailiang Lu, Guoxing Li, Yulong School of Mechanical and Aerospace Engineering DRNTU::Engineering::Mechanical engineering Voronoi Foam Microstructure Closed-cell aluminum foam is widely used as energy absorbing material. The cell regularity profoundly affects the mechanical behavior of this material. To investigate the influence of irregularity on elastic and plastic behavior of closed-cell foams, the compression behavior of Voronoi foams was simulated using the finite element method. The results show that with the increasing randomness of the foam, the elastic modules decrease a little while the collapse-strength decrease considerably. A theoretical analysis is conducted with the simple springs model. The results match well with simulation which shows theoretical analysis is reasonable. The Voronoi models were also compressed under different loading velocities and with different relative densities in simulation. The results reveal that foams with low regularity are more suitable for application in protective structures. Accepted version 2019-05-30T04:09:27Z 2019-12-06T17:44:56Z 2019-05-30T04:09:27Z 2019-12-06T17:44:56Z 2017 Journal Article Shi, X., Liu, S., Nie, H., Lu, G., & Li, Y. (2018). Study of cell irregularity effects on the compression of closed-cell foams. International Journal of Mechanical Sciences, 135, 215-225. doi:10.1016/j.ijmecsci.2017.11.026 0020-7403 https://hdl.handle.net/10356/90290 http://hdl.handle.net/10220/48484 10.1016/j.ijmecsci.2017.11.026 en International Journal of Mechanical Sciences © 2017 Elsevier Ltd. All rights reserved. This paper was published in International Journal of Mechanical Sciences and is made available with permission of Elsevier Ltd. 12 p. application/pdf
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic DRNTU::Engineering::Mechanical engineering
Voronoi Foam
Microstructure
spellingShingle DRNTU::Engineering::Mechanical engineering
Voronoi Foam
Microstructure
Shi, Xiaopeng
Liu, Shuangyan
Nie, Hailiang
Lu, Guoxing
Li, Yulong
Study of cell irregularity effects on the compression of closed-cell foams
description Closed-cell aluminum foam is widely used as energy absorbing material. The cell regularity profoundly affects the mechanical behavior of this material. To investigate the influence of irregularity on elastic and plastic behavior of closed-cell foams, the compression behavior of Voronoi foams was simulated using the finite element method. The results show that with the increasing randomness of the foam, the elastic modules decrease a little while the collapse-strength decrease considerably. A theoretical analysis is conducted with the simple springs model. The results match well with simulation which shows theoretical analysis is reasonable. The Voronoi models were also compressed under different loading velocities and with different relative densities in simulation. The results reveal that foams with low regularity are more suitable for application in protective structures.
author2 School of Mechanical and Aerospace Engineering
author_facet School of Mechanical and Aerospace Engineering
Shi, Xiaopeng
Liu, Shuangyan
Nie, Hailiang
Lu, Guoxing
Li, Yulong
format Article
author Shi, Xiaopeng
Liu, Shuangyan
Nie, Hailiang
Lu, Guoxing
Li, Yulong
author_sort Shi, Xiaopeng
title Study of cell irregularity effects on the compression of closed-cell foams
title_short Study of cell irregularity effects on the compression of closed-cell foams
title_full Study of cell irregularity effects on the compression of closed-cell foams
title_fullStr Study of cell irregularity effects on the compression of closed-cell foams
title_full_unstemmed Study of cell irregularity effects on the compression of closed-cell foams
title_sort study of cell irregularity effects on the compression of closed-cell foams
publishDate 2019
url https://hdl.handle.net/10356/90290
http://hdl.handle.net/10220/48484
_version_ 1759854306680373248