Wave localization in randomly disordered periodic piezoelectric rods with initial stress
- 4 Downloads
The elastic wave localization in disordered periodic piezoelectric rods with initial stress is studied using the transfer matrix and Lyapunov exponent method. The electric field is approximated as quasi-static. The effects of the initial stress on the band gap characteristics are investigated. The numerical calculations of localization factors and localization lengths are performed. It can be observed from the results that the band structures can be tuned by exerting the suitable initial stress. For different values of the piezoelectric rod length and the elastic constant, the band structures and the localization phenomena are very different. Larger disorder degree can lead to more obvious localization phenomenon.
Key wordspiezoelectric phononic crystal initial stress random disorder localization factor localization length
Unable to display preview. Download preview PDF.
- Xu, Z.Y., One-dimensional mechanically tunable photonic crystal. Journal of Tongji University (Natural Science), 2006, 34: 978–980 (in Chinese).Google Scholar
- Ma, H.M., Xu, Z.Y. and Zhang, R.J., Band structure analysis ofone-dimensional photonic crystals with continuous index of refraction. Acta Optica Sinica, 2006, 26: 914–917 (in Chinese).Google Scholar
- Shang, F.L., Wang, Z.K. and Li, Z.H., An exact analysis of thermal buckling of piezoelectric laminated plates. Acta Mechanica Solida Sinica, 1997, 10: 95–107.Google Scholar