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Article

Application of an Additive Manufactured Hybrid Metal/Composite Shock Absorber Panel to a Military Seat Ejection System

Department of Engineering, University of Campania “L. Vanvitelli”, Via Roma 29, 81031 Aversa, Italy
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Author to whom correspondence should be addressed.
Academic Editor: Min Soo Park
Appl. Sci. 2021, 11(14), 6473; https://doi.org/10.3390/app11146473
Received: 10 June 2021 / Revised: 1 July 2021 / Accepted: 12 July 2021 / Published: 13 July 2021
(This article belongs to the Special Issue Additive Manufacturing for Composite Materials)
In this work, a preliminary numerical assessment on the application of an additive manufactured hybrid metal/composite shock absorber panels to a military seat ejection system, has been carried out. The innovative character of the shock absorber concept investigated is that the absorbing system has a thickness of only 6 mm and is composed of a pyramid-shaped lattice core that, due to its small size, can only be achieved by additive manufacturing. The mechanical behaviour of these shock absorber panels has been examined by measuring their ability to absorb and dissipate the energy generated during the ejection phase into plastic deformations, thus reducing the loads acting on pilots. In this paper the effectiveness of a system composed of five hybrid shock absorbers, with very thin thickness in order to be easily integrated between the seat and the aircraft floor, has been numerically studied by assessing their ability to absorb the energy generated during the primary ejection phase. To accomplish this, a numerical simulation of the explosion has been performed and the energy absorbed by the shock-absorbing mechanism has been assessed. The performed analysis demonstrated that the panels can absorb more than 60% of the energy generated during the explosion event while increasing the total mass of the pilot-seat system by just 0.8%. View Full-Text
Keywords: additive manufacturing; lattice structure; hybrid composite/metal structures; composite materials; selective laser melting; shock absorbers additive manufacturing; lattice structure; hybrid composite/metal structures; composite materials; selective laser melting; shock absorbers
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MDPI and ACS Style

Acanfora, V.; Corvino, C.; Saputo, S.; Sellitto, A.; Riccio, A. Application of an Additive Manufactured Hybrid Metal/Composite Shock Absorber Panel to a Military Seat Ejection System. Appl. Sci. 2021, 11, 6473. https://doi.org/10.3390/app11146473

AMA Style

Acanfora V, Corvino C, Saputo S, Sellitto A, Riccio A. Application of an Additive Manufactured Hybrid Metal/Composite Shock Absorber Panel to a Military Seat Ejection System. Applied Sciences. 2021; 11(14):6473. https://doi.org/10.3390/app11146473

Chicago/Turabian Style

Acanfora, Valerio, Chiara Corvino, Salvatore Saputo, Andrea Sellitto, and Aniello Riccio. 2021. "Application of an Additive Manufactured Hybrid Metal/Composite Shock Absorber Panel to a Military Seat Ejection System" Applied Sciences 11, no. 14: 6473. https://doi.org/10.3390/app11146473

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