Mechanics of Solids (about journal) Mechanics of Solids
A Journal of Russian Academy of Sciences
 Founded
in January 1966
Issued 6 times a year
Print ISSN 0025-6544
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IssuesArchive of Issues2024-4pp.2292-2300

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Swapnil Shahane, Gaurav Tiwari, and Nikhil Andraskar, "Crushing Response of Al 7005 and 7075 Tubes against Transverse Loading," Mech. Solids. 59 (4), 2292-2300 (2024)
Year 2024 Volume 59 Number 4 Pages 2292-2300
DOI 10.1134/S0025654424604518
Title Crushing Response of Al 7005 and 7075 Tubes against Transverse Loading
Author(s) Swapnil Shahane (Department of Mechanical Engineering, Visvesvaraya National Institute of Technology, Nagpur, 440010 India, nishahane@gmail.com)
Gaurav Tiwari (Department of Mechanical Engineering, Visvesvaraya National Institute of Technology, Nagpur, 440010 India, gauraviitdelhi@gmail.com)
Nikhil Andraskar (Department of Mechanical Engineering, Visvesvaraya National Institute of Technology, Nagpur, 440010 India, andraskarnikhil@gmail.com)
Abstract This paper addresses the energy absorption behavior of high-strength aluminum alloy tubes made of AA 7005 and AA 7075 for potential application in passenger vehicle bumper systems to reduce pedestrian injury. An experimental and numerical analysis was carried out to know the quasi-static lateral compression behavior of the tubes. The length to diameter ratio of both types of tubes was varied as 1, 1.5, and 2 for identical wall thickness (3.55 mm) and external diameter (34 mm). Influence of length to diameter ratio on specific energy absorption, average load, failure mechanism and load-displacement curve was explored experimentally as well as through three-dimensional numerical simulations. Experiments were performed through compressive testing machine (CTM) with crosshead velocity of 1.2 mm/min whereas Ansys LS-DYNA with linear plasticity material model was employed to carry out the numerical simulations. Moreover, the obtained results were compared with the analytical models available in the literature, which was based on rigid-perfectly plastic material model. The predicted results were found to be close enough to that of the experimental results as well as analytical results. Experimentation and Finite element analysis showed that the aluminum tube AA7005 has better credibility as energy absorber than tube of AA7075.
Keywords crashworthiness, energy absorption, LS-DYNA, high-strength aluminum tube
Received 05 July 2024Revised 09 August 2024Accepted 12 August 2024
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