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dc.contributor.authorLiu, Yuhengen_US
dc.contributor.authorLei, Mingen_US
dc.contributor.authorPeng, Linlongen_US
dc.contributor.authorLu, Haibaoen_US
dc.contributor.authorShu, Dong Weien_US
dc.identifier.citationLiu, Y., Lei, M., Peng, L., Lu, H. & Shu, D. W. (2022). 3D printing auxetic draft-angle structures towards tunable buckling complexity. Smart Materials and Structures, 31(5), 055010-.
dc.description.abstractWith the development of 3D printing technology, auxetic structures have attracted extensive attention due to their unusual mechanical properties. In this study, we design a 3D printed auxetic structure using 2D draft angles to achieve a tunable out-of-plane double hyperbolic buckling behavior by effectively continuously varying stiffness across thickness. The influences of radii and draft angles on the buckling behaviors of the 3D printed draft-angle auxetic structures are studied by finite element method. The constitutive relationships between stress, strain, radius, and draft angle have been formulated and discussed to identify the working principle behind the mechanical performance of draft-angle auxetic structures. Finally, the buckling behavior is modelled by a laminate structure, and the accuracy of these analytical results has then been verified by experiment. This study is expected to provide a design guideline for achieving tunable buckling behavior of auxetic structures via the novel stress mismatch of draft angles and thus continuously varying stiffness along the thickness direction. The current work constitutes an initial attempt to realize the tunability of the 3D out of plane deformation of 2D plane structures under in-plane compression.en_US
dc.relation.ispartofSmart Materials and Structuresen_US
dc.rights© 2022 IOP Publishing Ltd. All rights reserved.en_US
dc.subjectEngineering::Mechanical engineeringen_US
dc.title3D printing auxetic draft-angle structures towards tunable buckling complexityen_US
dc.typeJournal Articleen
dc.contributor.schoolSchool of Mechanical and Aerospace Engineeringen_US
dc.subject.keywordsAuxetic Structureen_US
dc.description.acknowledgementThis work was financially supported by the National Natural Science Foundation of China (NSFC) under Grant No.11725208.en_US
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