Experimental and Analytical Study on Multiscale Cushioning and Energy Absorption of Aluminum Foam at Different Strain Rates
In this research, the compressive behavior of closed-cell aluminum foam was examined across a broad strain rate spectrum, spanning from 0.005 s⁻<sup>1</sup> to 2000 s⁻<sup>1</sup>. Utilizing an enhanced Hopkinson bar apparatus, the deformation and fracture mechanisms of the f...
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| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2025-02-01
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| Series: | Applied Sciences |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2076-3417/15/5/2638 |
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| Summary: | In this research, the compressive behavior of closed-cell aluminum foam was examined across a broad strain rate spectrum, spanning from 0.005 s⁻<sup>1</sup> to 2000 s⁻<sup>1</sup>. Utilizing an enhanced Hopkinson bar apparatus, the deformation and fracture mechanisms of the foam were captured through high-speed videography. Additionally, a microscale finite element model was developed to elucidate the dynamic deformation characteristics of aluminum foam at multiple scales. The findings indicate that the material’s response is highly strain rate-dependent, with both stress levels and energy absorption efficiency escalating as the strain rate rises. Moreover, the damage progression in aluminum foam manifests as a progressive collapse pattern. |
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| ISSN: | 2076-3417 |