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المؤلفMousanezhad, Davood
المؤلفBabaee, Sahab
المؤلفEbrahimi, Hamid
المؤلفGhosh, Ranajay
المؤلفHamouda, Abdelmagid Salem
المؤلفBertoldi, Katia
المؤلفVaziri, Ashkan
تاريخ الإتاحة2016-11-03T09:26:26Z
تاريخ النشر2015-12-16
اسم المنشورScientific Reports
المعرّفhttp://dx.doi.org/10.1038/srep18306
الاقتباسMousanezhad, D. et al. Hierarchical honeycomb auxetic metamaterials. Sci. Rep. 5, 18306
معرّف المصادر الموحدhttp://hdl.handle.net/10576/4957
الملخصMost conventional materials expand in transverse directions when they are compressed uniaxially resulting in the familiar positive Poisson’s ratio. Here we develop a new class of two dimensional (2D) metamaterials with negative Poisson’s ratio that contract in transverse directions under uniaxial compressive loads leading to auxeticity. This is achieved through mechanical instabilities (i.e., buckling) introduced by structural hierarchy and retained over a wide range of applied compression. This unusual behavior is demonstrated experimentally and analyzed computationally. The work provides new insights into the role of structural organization and hierarchy in designing 2D auxetic metamaterials, and new opportunities for developing energy absorbing materials, tunable membrane filters, and acoustic dampeners.
راعي المشروعNPRP award [NPRP 7-882-2-326] from the Qatar National Research Fund (a member of the Qatar Foundation).
اللغةen
الناشرNature Publishing Group
الموضوعMechanical engineering
Soft materials
Mechanical properties
العنوانHierarchical honeycomb auxetic metamaterials
النوعArticle
رقم المجلد5
ESSN2045-2322
dc.accessType Open Access


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