Department of Applied Mechanics, Indian Institute of Technology Madras, Chennai, IndiaDepartment of Applied Mechanics, Indian Institute of Technology Madras, Chennai, IndiaCorporate Technology Centre, Tube Investment of India Ltd., Avadi, Chennai, India
S. Vignesh;C. Lakshmana Rao;Simhachalam Bade
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.