Hierarchical honeycomb auxetic metamaterials
المؤلف | Mousanezhad, Davood |
المؤلف | Babaee, Sahab |
المؤلف | Ebrahimi, Hamid |
المؤلف | Ghosh, Ranajay |
المؤلف | Hamouda, Abdelmagid Salem |
المؤلف | Bertoldi, Katia |
المؤلف | Vaziri, Ashkan |
تاريخ الإتاحة | 2016-11-03T09:26:26Z |
تاريخ النشر | 2015-12-16 |
اسم المنشور | Scientific Reports |
المعرّف | http://dx.doi.org/10.1038/srep18306 |
الاقتباس | Mousanezhad, D. et al. Hierarchical honeycomb auxetic metamaterials. Sci. Rep. 5, 18306 |
الملخص | Most 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 المشروع | NPRP award [NPRP 7-882-2-326] from the Qatar National Research Fund (a member of the Qatar Foundation). |
اللغة | en |
الناشر | Nature Publishing Group |
الموضوع | Mechanical engineering Soft materials Mechanical properties |
النوع | Article |
رقم المجلد | 5 |
ESSN | 2045-2322 |
الملفات في هذه التسجيلة
هذه التسجيلة تظهر في المجموعات التالية
-
الهندسة الميكانيكية والصناعية [1342 items ]