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- Title
A coupled Legendre-Laguerre polynomial method with analytical integration for the Rayleigh waves in a quasicrystal layered half-space with an imperfect interface.
- Authors
Zhang, Bo; Tu, Honghang; Chen, Weiqiu; Yu, Jiangong; Elmaimouni, L.
- Abstract
The Laguerre polynomial method has been successfully used to investigate the dynamic responses of a half-space. However, it fails to obtain the correct stress at the interfaces in a layered half-space, especially when there are significant differences in material properties. Therefore, a coupled Legendre-Laguerre polynomial method with analytical integration is proposed. The Rayleigh waves in a one-dimensional (1D) hexagonal quasicrystal (QC) layered half-space with an imperfect interface are investigated. The correctness is validated by comparison with available results. Its computation efficiency is analyzed. The dispersion curves of the phase velocity, displacement distributions, and stress distributions are illustrated. The effects of the phonon-phason coupling and imperfect interface coefficients on the wave characteristics are investigated. Some novel findings reveal that the proposed method is highly efficient for addressing the Rayleigh waves in a QC layered half-space. It can save over 99% of the computation time. This method can be expanded to investigate waves in various layered half-spaces, including earth-layered media and surface acoustic wave (SAW) devices.
- Subjects
ACOUSTIC surface waves; LAGUERRE polynomials; PHASE velocity; STRESS concentration; DISPLACEMENT (Psychology); RAYLEIGH waves
- Publication
Applied Mathematics & Mechanics, 2024, Vol 45, Issue 9, p1539
- ISSN
0253-4827
- Publication type
Article
- DOI
10.1007/s10483-024-3145-8