Bending performance of the AuxOcta multi-cellular beam structure

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dc.authorid0000-0001-6228-3630en_US
dc.authorid0000-0003-0994-2806en_US
dc.contributor.authorKahraman, Mehmet Fatih
dc.contributor.authorGenel, Kenan
dc.date.accessioned2024-07-23T07:02:19Z
dc.date.available2024-07-23T07:02:19Z
dc.date.issued2023en_US
dc.departmentBAİBÜ, Mühendislik Fakültesi, Makine Mühendisliği Bölümüen_US
dc.description.abstractAuxetic cellular tubes are potential candidates for several engineering applications requiring resistance to bending due to the enormous demand for lightweight and high mechanical performance. Interestingly, we found that the preferential buckling mode can change the direction of deformation in the beam cross-section by applying negative Poisson's ratio cells in the lateral direction and is an effective modifying region. The bending response and energy absorption of multi-cellular tube with auxetic cells (Aux) and novel design tubes with auxetic and octagonal cells (AuxOcta) have been investigated with numerical and experimental systematically. These unique auxetic structures are produced by direct metal laser sintering (DMLS) with 316L stainless steel. The bending results show that the Aux tube indicates gradual local deformation in the loading region, while the cells of the AuxOcta tube beam are homogeneously deformed in the loading region. Moreover, AuxOcta structure is optimized to improve load-carrying and energy-absorbing capacities. This optimized AuxOcta structure (AuxOcta-G) offers superior bending performance from the test results. Compared to the Aux structure, the improvement in the specific load carrying (SLC) capacity of the AuxOcta-G structure above is 15% for 5 mm displacement, while the improvement in the specific energy absorption (SEA) approximately reaches 16%. The Finite Element Method (FEM) results showed that AuxOcta and AuxOcta-G structures offer a preferred behavior with a wide displacement range. This study provides a baseline for future investigation of hybrid beam design with a negative Poisson cross-section.en_US
dc.identifier.citationKahraman, M. F., & Genel, K. (2023). Bending performance of the AuxOcta multi-cellular beam structure. Engineering Structures, 294, 116737.en_US
dc.identifier.doi10.1016/j.engstruct.2023.116737
dc.identifier.endpage16en_US
dc.identifier.issn0141-0296
dc.identifier.issn1873-7323
dc.identifier.scopus2-s2.0-85167994377en_US
dc.identifier.scopusqualityQ1en_US
dc.identifier.startpage1en_US
dc.identifier.urihttp://dx.doi.org/10.1016/j.engstruct.2023.116737
dc.identifier.urihttps://hdl.handle.net/20.500.12491/12263
dc.identifier.volume294en_US
dc.identifier.wosWOS:001055291000001en_US
dc.identifier.wosqualityQ1en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.institutionauthorKahraman, Mehmet Fatih
dc.language.isoenen_US
dc.publisherElsevier Science Ltden_US
dc.relation.ispartofEngineering Structuresen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectAuxetic Cellular Tubesen_US
dc.subjectLateral Bending Responseen_US
dc.subjectPoisson's Ratioen_US
dc.subjectMechanical-Propertiesen_US
dc.subjectSandwich Structuresen_US
dc.subjectBehavioren_US
dc.titleBending performance of the AuxOcta multi-cellular beam structureen_US
dc.typeArticleen_US

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