Kocabaş, Gazi Başar

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Citation - Scopus: 11
Experimental Comparison of the Energy Absorption Performance of Traditional Lattice and Novel Lattice Filled Tubes
(Society of Automotive Engineers Turkey, 2023) Kocabas, G.B.; Çetin, E.; Yalcinkaya, S.; Sahin, Y.
In this study, β-Ti3Au lattice structure was proposed for the first time in the literature as a filling material to increase the energy absorption performance of thin-walled tubes. In this context, the energy absorption performances of conventional lattice structure (i.e., body-centered cubic unit cell (BCC) and face-centered cubic unit cell (FCC)) filled thin-walled tubes and proposed novel β-Ti3Au lattice structure filled thin-walled tubes with proposed were compared experimentally under quasi-static compression load. BCC hybrid, FCC hybrid and β-Ti3Au hybrid structures produced by additive manufacturing technology using PA2200 powder were crushed and evaluated by considering various crashworthiness criteria such as total energy absorption (EA) and specific energy absorption (SEA). The results showed that the β-Ti3Au hybrid structures are better crashworthiness performance than that of traditional filling BCC and FCC lattice structure filled thin-walled tubes. In particular, the β-Ti3Au hybrid structure has 18.17% and 19.39% higher EA values than BCC hybrid and FCC hybrid, respectively. These values are 16.50% and 15.66% for SEA values, respectively. As a result, the current investigation showed that the suggested β-Ti3Au lattice structures as a filler material can be a significant alternative for applications where energy absorption performance is critical. © 2023 Society of Automotive Engineers Turkey. All rights reserved.
Citation - WoS: 16
Citation - Scopus: 17
Energy Absorption of a Novel Lattice Structure-Filled Multicell Thin-Walled Tubes Under Axial and Oblique Loadings
(John Wiley and Sons Inc, 2024) Kocabas, G.B.; Yalcinkaya, S.; Çetin, E.; Sahin, Y.
Multicell design and lattice structure as filling material are two effective methods for enhancing the energy absorption performance of thin-walled tubes. This study combines these two approaches to present a multicell tube with a novel lattice structure and investigates the energy absorption performances of these hybrid multicell tubes under axial (0°) and oblique (10°, 20°, and 30°) impact loading conditions. As filling structure, β-Ti3Au lattice geometry with varying lattice strut diameters and the number of lattice unit cells are used, while the single and multicell thin-walled tubes with different tube thicknesses are employed as main absorbing element. In this context, the effects of numbers of lattice unit cells, lattice strut diameter, cell numbers of the tube, and tube thickness on energy absorption performance of hybrid tubes are examined using validated nonlinear finite element models. This investigation unveils that the synergistic interplay between the multicell tubes and lattice structure during deformation significantly elevates the energy absorption performance of the hybrid structure. Notably, the findings demonstrate that multicell hybrid tubes exhibit a remarkable capacity to absorb up to 30.36% more impact energy compared to the aggregate absorption of individual components in hybrid tubes. © 2024 The Author(s). Advanced Engineering Materials published by Wiley-VCH GmbH.

Journal	Count
Advanced Engineering Materials	1
International Journal of Automotive Science and Technology	1

Kocabaş, Gazi Başar

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