TY - JOUR
T1 - Numerical simulation of broadband bi-negative elastic metamaterials and wave transmission properties
AU - Weng, Chung Ning
AU - Chang, Po Wei
AU - Chen, Tungyang
N1 - Funding Information:
This work was supported by the National Science Council, Taiwan, under contract NSC99-2221-E-006-070MY3.
Publisher Copyright:
© 2014 Published by Elsevier Ltd. This is an open access article under the CC BY-NC-ND license.
PY - 2014
Y1 - 2014
N2 - In this paper, we introduce an alternative model of elastic metamaterial by following the conceptual design of hybrid elastic solid reported by Lai and colleges [17]. The proposed model is comprised of build-in resonant microstructures which are made of three kinds of conventional materials. Under specific incident frequencies, it behaves seemingly as a medium with negative mass density and elastic modulus so that a few novel wave propagation properties can be observed. We utilize finite element simulation to analyze the effective material parameters as well as the wave transmission properties. Comparing to the literatures, the proposed model appears larger band of practical application, and furthermore the required material is reduced which may be more easy to fabricate.
AB - In this paper, we introduce an alternative model of elastic metamaterial by following the conceptual design of hybrid elastic solid reported by Lai and colleges [17]. The proposed model is comprised of build-in resonant microstructures which are made of three kinds of conventional materials. Under specific incident frequencies, it behaves seemingly as a medium with negative mass density and elastic modulus so that a few novel wave propagation properties can be observed. We utilize finite element simulation to analyze the effective material parameters as well as the wave transmission properties. Comparing to the literatures, the proposed model appears larger band of practical application, and furthermore the required material is reduced which may be more easy to fabricate.
UR - http://www.scopus.com/inward/record.url?scp=84949125997&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84949125997&partnerID=8YFLogxK
U2 - 10.1016/j.proeng.2014.06.389
DO - 10.1016/j.proeng.2014.06.389
M3 - Conference article
AN - SCOPUS:84949125997
VL - 79
SP - 622
EP - 630
JO - Procedia Engineering
JF - Procedia Engineering
SN - 1877-7058
T2 - 37th National Conference on Theoretical and Applied Mechanics, NCTAM 2013, Conjoined with the 1st International Conference on Mechanics, ICM 2013
Y2 - 8 November 2013 through 9 November 2013
ER -