Harnessing instability-induced pattern transformation to design tunable phononic crystals

INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES

卷:58

Article

Shim, Jongmin¹  Wang, Pai²  Bertoldi, Katia^2,3 

[1] SUNY Buffalo, Dept Civil Struct & Environm Engn, Buffalo, NY 14260 USA

[2] Harvard Univ, Sch Engn & Appl Sci, Cambridge, MA 02138 USA

[3] Harvard Univ, Kavli Inst Bionano Sci & Technol, Cambridge, MA 02138 USA

关键词: Phononic crystal;    Pattern transformation;    Instability;    Finite element analysis;   

DOI  :  10.1016/j.ijsolstr.2014.12.018

来源: Elsevier

【 摘 要 】

We investigate the propagation of elastic waves in four periodic porous elastomeric planar structures, where pattern transformation is induced by mechanical instability under uniaxial compression. A series of numerical analyses is performed to offer a detailed understanding of the evolution of their spectral band-gaps as a function of void patterns, porosity, and applied deformation. The results of our study outline a general strategy to design phononic crystals whose response can be effectively tuned by the level of applied deformation. (C) 2014 Elsevier Ltd. All rights reserved.

【 授权许可】

Free