Wave propagation and vibration analysis in two-dimensional elastic chiral metacomposite

G. L. Huang; X. N. Liu; M. Reynolds

doi:10.1117/12.880229

31 March 2011 Wave propagation and vibration analysis in two-dimensional elastic chiral metacomposite

G. L. Huang, X. N. Liu, M. Reynolds

Proceedings Volume 7984, Health Monitoring of Structural and Biological Systems 2011; 79841S (2011) https://doi.org/10.1117/12.880229
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2011, San Diego, California, United States

Abstract

In this work, a new chiral metacomposite is proposed by integrating two-dimensional periodic chiral lattice with elastic metamaterial inclusions for low-frequency wave applications. The plane harmonic wave propagation in the proposed metacomposite is investigated through the finite element technique and Bloch's theorem. From that, band diagrams, dispersion surfaces as well as phase and group velocities are obtained to illustrate wave properties of the chiral metacomposite. Effective dynamic properties of the chiral metacomposite are numerically calculated to explain lowfrequency bandgap behavior in the chiral metacomposite. Specifically, design of a metacomposite beam structure for the broadband low-frequency vibration suppression is demonstrated.

Citation Download Citation

G. L. Huang, X. N. Liu, and M. Reynolds "Wave propagation and vibration analysis in two-dimensional elastic chiral metacomposite", Proc. SPIE 7984, Health Monitoring of Structural and Biological Systems 2011, 79841S (31 March 2011); https://doi.org/10.1117/12.880229

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