Open Access3D printed NiTi alloy lattice cantilever beam acoustic metamaterial
Author(s) -
Weirui Gao,
Kai Guo,
Jie Sun,
Bin Yang
Publication year - 2022
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/2252/1/012009
Subject(s) - metamaterial , materials science , cantilever , acoustics , beam (structure) , resonator , lattice (music) , dispersion relation , band gap , attenuation , finite element method , vibration , optoelectronics , optics , composite material , structural engineering , physics , engineering
In this paper, a novel acoustic metamaterial beam attached with lattice structures and resonators is designed for elastic wave attenuation. The proposed acoustic metamaterial beam is fabricated by 3D printing with NiTi alloy. Theoretical analysis using negative effective mass is performed to derive the band gap of structure. The finite element method and experimental analysis are performed to investigate the dispersion relation and transmission spectrum. Furthermore, the effect of geometric features on the band gap is studied by simulations. Results proved that the metamaterial beam can be utilized for the control of low-frequency vibration.