3D auxetic single material periodic structure with ultra-wide tunable bandgap.

ABSTRACT: The design and the combination of innovative metamaterials are attracting increasing interest in the scientific community because of their unique properties that go beyond the ones of natural materials. In particular, auxetic materials and phononic crystals are widely studied for their negative Poisson's ratio and their bandgap opening properties, respectively. In this work, auxeticity and phononic crystals bandgap properties are properly combined to obtain a single phase periodic structure with a tridimensional wide tunable bandgap. When an external tensile load is applied to the structure, the auxetic unit cells change their configurations by exploiting the negative Poisson's ratio and this results in the tuning, either hardening or softening, of the frequencies of the modes limiting the

SUBMITTER: D'Alessandro L 

PROVIDER: S-EPMC5797155 | biostudies-literature | 2018 Feb

REPOSITORIES: biostudies-literature