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Wavelet-based method for computing elastic band gaps of one-dimensional phononic crystals

  • Yan ZhiZhong 
  • Wang YueSheng 
Article

Abstract

A wavelet-based method was developed to compute elastic band gaps of one-dimensional phononic crystals. The wave field was expanded in the wavelet basis and an equivalent eigenvalue problem was derived in a matrix form involving the adaptive computation of integrals of the wavelets. The method was then applied to a binary system. For comparison, the elastic band gaps of the same one-dimensional phononic crystals computed with the wavelet method and the well-known plane wave expansion (PWE) method are both presented in this paper. The numerical results of the two methods are in good agreement while the computation costs of the wavelet method are much lower than that of PWE method. In addition, the adaptability of wavelets makes the method possible for efficient band gap computation of more complex phononic structures.

Keywords

phononic crystals elastic band gap wavelet method plane wave expansion (PWE) method 

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Copyright information

© Science in China Press 2007

Authors and Affiliations

  1. 1.Institute of Engineering MechanicsBeijing Jiaotong UniversityBeijingChina

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