Abstract
In this article, energy absorption and dynamic compressive stress–strain behavior of aluminum foam-filled and empty tube of aluminum alloy AA7075-T6 were investigated using a split Hopkinson pressure bar (SHPB) technique. Both quasi-static and dynamic compression tests were conducted on closed-cell aluminum foam specimens having a relative density of 0.16. The experimental results showed that the plateau stress and energy absorption of foam-filled aluminum alloy AA7075-T6 tube specimen increase with increase in strain rate. The load-deformation characteristics, failure modes, and energy absorption capacity of different structures under dynamic loading were investigated. At higher strain rates, the energy absorption capacity of foam-filled aluminum alloy tubes was found to be increased, which is useful for crashworthy applications.
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Abbreviations
- ρ*:
-
Density of closed-cell aluminum foam
- \(\sigma_{\text{pl}}\) :
-
Plateau stress
- \(\varepsilon_{D}\) :
-
Densification strain
- W :
-
Energy absorption
- A i :
-
Cross-sectional area of incident bar
- A t :
-
Cross-sectional area of transmitted bar
- C 0 :
-
Longitudinal wave speed
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Acknowledgments
The authors acknowledge Professor P. Venkitanarayanan from Indian Institute of Technology, Kanpur for valuable discussions and collaboration.
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Vignesh, S., Lakshmana Rao, C., Bade, S. (2018). Energy Absorption Characteristics of AA7075-T6 Tube Filled with Aluminum Foam. In: Prakash, R., Jayaram, V., Saxena, A. (eds) Advances in Structural Integrity. Springer, Singapore. https://doi.org/10.1007/978-981-10-7197-3_26
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DOI: https://doi.org/10.1007/978-981-10-7197-3_26
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