Experimental investigation of multiple defect states in two-dimensional phononic crystal with (32.4.3.4) lattice

被引：0

作者：

Zhao, Huanyu ^{[1
]}

Wang, Yuesheng ^{[1
]}

机构：

[1] Institute of Engineering Mechanics, Beijing Jiaotong University, Beijing

来源：

Jixie Gongcheng Xuebao/Journal of Mechanical Engineering | 2015年 / 51卷 / 08期

关键词：

(3[!sup]2[!/sup].4.3.4) lattice; Band structure; Multiple point defects of Zigzag type; Phononic crystals; Transmission spectra;

D O I：

10.3901/JME.2015.08.014

中图分类号：

学科分类号：

摘要：

It is easy to open some the complete band gaps for phononic crystals (PCs) since the symmetry reduces for the complex lattices. The properties of multiple point defects in a PC composed of a (32.4.3.4) array of circular steel cylinders in water are studied experimentally. The band structures of PCs with multiple defects of different zigzag types are computed by the finite element method with the supercell approximation. A good agreement between the numerical and experiment results is shown. The effects of the number of the multiple point defects of the Zigzag type decide on the localized modes, the eigonmodes and the waveguide in the band gaps of high or low frequencies are discussed. These defect studies of PCs with complex lattices can be further used to improve the design of new acoustic devices. ©2015 Journal of Mechanical Engineering

引用

页码：14 / 19

页数：5

共 18 条

[1]

Kushwaha M.S., Halevi P., Dobrzynski L., Et al., Acoustic band structure of periodic elastic composites, Physical Review Letters, 71, 13, pp. 2022-2025, (1993)

[2]

Wu J., Zhang S., Shen L., Low-frequency vibration characteristics of periodic spiral resonators in phononic crystal plates, Journal of Mechanical Engineering, 49, 10, pp. 62-69, (2013)

[3]

Li X., Ni X., Feng L., Et al., Tunable unidirectional sound propagation through a sonic-based acoustic diode, Physical Review Letter, 106, 8, (2011)

[4]

Liu Z., Zhang X., Mao Y., Et al., Locally resonant sonic materials, Science, 289, pp. 1434-1436, (2000)

[5]

Khelif A., Choujaa A., Djafari-Rouhani B., Et al., Trapping and guiding of acoustic waves by defect modes in a full-band-gap ultrasonic crystal, Physical Review B, 68, 21, (2003)

[6]

Romero-Garcia V., Sanchez-Perez J.V., Garcia-Raffi L.M., Propagating and evanescent properties of double-point defects in sonic crystals, New Journal of Physics, 12, (2010)

[7]

Zhao F., Yuan L., Defect states of homogeneity dislocation structures in two-dimensional phononic crystal. Low-frequency vibration characteristics of periodic spiral resonators in phononic crystal plates, Acta Physica Sinica, 55, 2, pp. 517-520, (2006)

[8]

Yue L., Chen Y., Fan G., Et al., Influence of defect states on band gaps of the 4340 steel in epoxy in two-dimensional phononic crystal, Acta Physica Sinica, 60, 10, (2011)

[9]

Li J., Wang Y., Zhang C., Finite element analysis and design of band structures for two-dimensional phononic crysta ls microcavity, Journal of Synthetic Crystal, 39, 3, pp. 649-655, (2010)

[10]

Zhao H., He C., Wu B., Et al., Experimental investigation of two-dimensional multi-point defect phononic crystals with square lattice, Acta Physica Sinica, 62, 13, (2013)

← 1 2 →