A Two-dimensional analysis of surface acoustic waves in finite solids with the consideration of electrodes

Issue title: SES 2004

Article type: Research Article

Authors: Wang, Ji^{a; *} | Lin, Jingbo^a | Wan, Yongping^b | Zhong, Zheng^b

Affiliations: [a] Mechanics and Materials Science Research Center, School of Engineering, Ningbo University, 1211 Zhenning Xilu Road, Ningbo, Zhejiang 315211, China | [b] Department of Engineering Mechanics, Key Laboratory of Mechanics of MOE, School of Aerospace, Aeronautics, and Mechanics, Tongji University, 1239 Siping Road, Shanghai 20092, China

Correspondence: [*] Corresponding author. Tel.: +86 574 8760 0467; Fax: +86 574 8760 8358; E-mail: [email protected]

Abstract: The analysis of surface acoustic wave propagation in finite elastic solids is of essential importance in the study of the propagation nature and practical applications, and tremendous efforts have been made lately in employing both analytical and numerical methods for accurate solutions of the phase velocity and displacements. To overcome current difficulties in the physical model and computational intensity, a two-dimensional theory similar to Mindlin and Lee plate theories has been established for the surface acoustic wave propagating in finite elastic solids. A systematic simplification of the three-dimensional equations resulted in a two-dimensional theory with accuracy and potential to solve surface acoustic wave problems in solids in a more efficient manner. For practical applications, the presence of a thin film over the substrate is studied with the two-dimensional theory with systematic modification, and straight-crested solutions with different film thickness are obtained.

Keywords: Surface, wave, solid, propagation, velocity, finite, plate, vibration, electrode, platings

DOI: 10.3233/JAE-2005-691

Journal: International Journal of Applied Electromagnetics and Mechanics, vol. 22, no. 1-2, pp. 53-68, 2005