TITLE

Band structures in a two-dimensional phononic crystal with rotational multiple scatterers

AUTHOR(S)
Song, Ailing; Wang, Xiaopeng; Chen, Tianning; Wan, Lele
PUB. DATE
March 2017
SOURCE
International Journal of Modern Physics B: Condensed Matter Phys;3/10/2017, Vol. 31 Issue 6, p-1
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
In this paper, the acoustic wave propagation in a two-dimensional phononic crystal composed of rotational multiple scatterers is investigated. The dispersion relationships, the transmission spectra and the acoustic modes are calculated by using finite element method. In contrast to the system composed of square tubes, there exist a low-frequency resonant bandgap and two wide Bragg bandgaps in the proposed structure, and the transmission spectra coincide with band structures. Specially, the first bandgap is based on locally resonant mechanism, and the simulation results agree well with the results of electrical circuit analogy. Additionally, increasing the rotation angle can remarkably influence the band structures due to the transfer of sound pressure between the internal and external cavities in low-order modes, and the redistribution of sound pressure in high-order modes. Wider bandgaps are obtained in arrays composed of finite unit cells with different rotation angles. The analysis results provide a good reference for tuning and obtaining wide bandgaps, and hence exploring the potential applications of the proposed phononic crystal in low-frequency noise insulation.
ACCESSION #
121547701

 

Related Articles

  • Band Structures in Two-Dimensional Phononic Crystals with Periodic S-Shaped Slot. Wang, Ting; Sheng, Mei-ping; Wang, Hui; Qin, Qing-Hua // Acoustics Australia;Dec2015, Vol. 43 Issue 3, p275 

    Band structures are investigated in two-dimensional phononic crystals (PC) composed of a periodic S-shaped slot in an air matrix with a square lattice. Dispersion relations, pressure fields and transmission spectra are calculated using the finite element method and Bloch theorem. Numerical...

  • Ultralow frequency acoustic bandgap and vibration energy recovery in tetragonal folding beam phononic crystal. Gao, Nansha; Wu, Jiu Hui; Yu, Lie; Hou, Hong // International Journal of Modern Physics B: Condensed Matter Phys;7/20/2016, Vol. 30 Issue 18, p-1 

    This paper investigates ultralow frequency acoustic properties and energy recovery of tetragonal folding beam phononic crystal (TFBPC) and its complementary structure. The dispersion curve relationships, transmission spectra and displacement fields of the eigenmodes are studied with FEA in...

  • Three-component pillared phononic crystal plate containing viscoelastic material. Zhao, Haojiang; Wang, Gang; Qi, Lili; Wang, Lei; Ma, Lie // Modern Physics Letters B;May2017, Vol. 31 Issue 15, p-1 

    Three-component pillared phononic crystal plates (PPCPs) usually contain viscoelastic materials. The influence of viscoelasticity on the band structures cannot be ignored. Based on the finite element method (FEM) and the standard linear solid model, this paper proposes a method to obtain the...

  • Multi-channel unidirectional transmission of phononic crystal heterojunctions. Xu, Zhenlong; Tong, Jie; Wu, Fugen // Modern Physics Letters B;Feb2018, Vol. 32 Issue 4, p-1 

    Two square steel columns are arranged in air to form two-dimensional square lattice phononic crystals (PNCs). Two PNCs can be combined into a non-orthogonal 45 heterojunction when the difference in the directional band gaps of the two PNC types is utilized. The finite element method is used to...

  • Vibration band gaps in double-vibrator pillared phononic crystal plate. Hao-Jiang Zhao; Hong-Wei Guo; Ming-Xing Gao; Rong-Qiang Liu; Zong-Quan Deng // Journal of Applied Physics;1/7/2016, Vol. 119 Issue 1, p014903-1 

    This paper proposes a double-vibrator three-component pillared phononic crystal plate and theoretically studies the properties of vibration band gaps of this plate. The band structures and the displacement fields of the eigenmodes are calculated by the finite element method. Comparing the...

  • Large band gaps in two-dimensional phononic crystals with self-similarity structure. Gao, Nansha; Wu, Jiu Hui; Yu, Lie // International Journal of Modern Physics B: Condensed Matter Phys;Feb2015, Vol. 29 Issue 4, p-1 

    In this paper, we study the band gaps (BGs) of two-dimensional (2D) phononic crystals (PCs) composed of self-similarity shape inclusions embedded in the homogenous matrix. The dispersion relations, transmission spectra, and displacement fields of eigenmodes of the proposed structures are...

  • Finite element computational dynamics of rotating systems. Mackerle, Jaroslav // Shock & Vibration;1999, Vol. 6 Issue 4, p209 

    This bibliography lists references to papers, conference proceedings and theses/dissertations dealing with finite element analysis of rotor dynamics problems that were published in 1994–1998. It contains 319 citations. Also included, as separate subsections, are finite element analyses of...

  • Scattering from an infinite, finitely conducting cylinder by finite element analysis. Bruno, A. B.; Brauer, J. R. // Journal of Applied Physics;4/15/1988, Vol. 63 Issue 8, p3200 

    Focuses on a study which evaluated the scattering of plane electromagnetic waves from an infinite, finitely conducting cylinder by the finite element method (FEM). Methodology of the study; Discussion on the computer program used; Results of the FEM calculation; Discussion on results for...

  • Research on local resonance and Bragg scattering coexistence in phononic crystal. Dong, Yake; Yao, Hong; Du, Jun; Zhao, Jingbo; Jiang, Jiulong // Modern Physics Letters B;4/20/2017, Vol. 31 Issue 11, p-1 

    Based on the finite element method (FEM), characteristics of the local resonance band gap and the Bragg scattering band gap of two periodically-distributed vibrator structures are studied. Conditions of original anti-resonance generation are theoretically derived. The original anti-resonance...

Share

Read the Article

Courtesy of THE LIBRARY OF VIRGINIA

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics