中国物理B ›› 2015, Vol. 24 ›› Issue (6): 66101-066101.doi: 10.1088/1674-1056/24/6/066101

• CONDENSED MATTER: STRUCTURAL, MECHANICAL, AND THERMAL PROPERTIES • 上一篇    下一篇

Band structures of elastic waves in two-dimensional eight-fold solid-solid quasi-periodic phononic crystals

陈阿丽, 梁同利, 汪越胜   

  1. Institute of Engineering Mechanics, Beijing Jiaotong University, Beijing 100044, China
  • 收稿日期:2014-11-17 修回日期:2015-01-06 出版日期:2015-06-05 发布日期:2015-06-05
  • 基金资助:

    Project supported by the National Natural Science Foundation of China (Grant Nos. 11272043 and 10902012) and the Project-sponsored by SRF for ROCS, SEM.

Band structures of elastic waves in two-dimensional eight-fold solid-solid quasi-periodic phononic crystals

Chen A-Li (陈阿丽), Liang Tong-Li (梁同利), Wang Yue-Sheng (汪越胜)   

  1. Institute of Engineering Mechanics, Beijing Jiaotong University, Beijing 100044, China
  • Received:2014-11-17 Revised:2015-01-06 Online:2015-06-05 Published:2015-06-05
  • Contact: Chen A-Li E-mail:alchen@bjtu.edu.cn
  • About author:61.44.Br; 63.20.-e; 63.20.Pw
  • Supported by:

    Project supported by the National Natural Science Foundation of China (Grant Nos. 11272043 and 10902012) and the Project-sponsored by SRF for ROCS, SEM.

摘要:

Combined with the supercell method, band structures of the anti-plane and in-plane modes of two-dimensional (2D) eight-fold solid–solid quasi-periodic phononic crystals (QPNCs) are calculated by using the finite element method. The influences of the supercell on the band structure and the wave localization phenomenon are discussed based on the modal distributions. The reason for the appearance of unphysical bands is analyzed. The influence of the incidence angle on the transmission spectrum is also discussed.

关键词: elastic waves, phononic crystals, quasi-periodic, bandgaps

Abstract:

Combined with the supercell method, band structures of the anti-plane and in-plane modes of two-dimensional (2D) eight-fold solid–solid quasi-periodic phononic crystals (QPNCs) are calculated by using the finite element method. The influences of the supercell on the band structure and the wave localization phenomenon are discussed based on the modal distributions. The reason for the appearance of unphysical bands is analyzed. The influence of the incidence angle on the transmission spectrum is also discussed.

Key words: elastic waves, phononic crystals, quasi-periodic, bandgaps

中图分类号:  (Quasicrystals)

  • 61.44.Br
63.20.-e (Phonons in crystal lattices) 63.20.Pw (Localized modes)