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...
| Main Authors: | , , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2019
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/90290 http://hdl.handle.net/10220/48484 |
| _version_ | 1826115313049010176 |
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| author | Shi, Xiaopeng Liu, Shuangyan Nie, Hailiang Lu, Guoxing Li, Yulong |
| 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 |
| author_sort | Shi, Xiaopeng |
| collection | NTU |
| 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. |
| first_indexed | 2024-10-01T03:53:07Z |
| format | Journal Article |
| id | ntu-10356/90290 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T03:53:07Z |
| publishDate | 2019 |
| record_format | dspace |
| spelling | ntu-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 |
| 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 |
| title | 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_short | 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 |
| topic | DRNTU::Engineering::Mechanical engineering Voronoi Foam Microstructure |
| url | https://hdl.handle.net/10356/90290 http://hdl.handle.net/10220/48484 |
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