Design of double negativity elastic metamaterial

International Journal of Smart and Nano Materials

C.T. Sun¹  Y.C. Su¹ 

[1] Purdue University;

关键词: acoustic metamaterial;    double negativity;    local resonance;    negative mass;    negative modulus;   

DOI  :  10.1080/19475411.2015.1029604

来源: DOAJ

【 摘 要 】

A metamaterial model that possesses simultaneously negative effective mass density and negative effective Young’s modulus is proposed in this study. Dispersion curves and dynamic responses of the model are investigated. In the double negative frequency region, it is demonstrated that the phase velocity is negative. In addition, it was found that the band gap region of the metamaterial can be predicted accurately by taking parts of single-unit cell to analyze the steady-state response. The design is also fabricated by a 3D printer.

【 授权许可】

Unknown