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International Journal for Multiscale Computational Engineering
IF: 1.016 5-Year IF: 1.194 SJR: 0.554 SNIP: 0.68 CiteScore™: 1.18

ISSN Print: 1543-1649
ISSN Online: 1940-4352

International Journal for Multiscale Computational Engineering

DOI: 10.1615/IntJMultCompEng.v3.i4.80
pages 517-525

High-Efficiency Scaled Multivariable Piezoelectric Element Methods With Electric Potential and Temperature Variation for Analysis of Stable Hybrid Resonance of LPSAW and DSAW Propagations

W. Zhang
Department of Civil Engineering, Zhejiang University, Hangzhou 310027, P.R.China
J. C. Tang
Department of Civil Engineering, Zhejiang University, Hangzhou 310027, P.R.China
T. Hong
Department of Civil Engineering, Zhejiang University, Hangzhou 310027, P.R.China
L. X. Yang
Department of Civil Engineering, Zhejiang University, Hangzhou 310027, P.R.China

ABSTRACT

This report further discusses and applies an efficient multifield scaled piezoelectric generalized plane strain element computing method with variables of mechanical displacements, electric potential, and up to second- order temperature gradients for scaled computational analysis of thermal bulk acoustic wave spectrums and leaky piezoelectric surface acoustic wave (LPSAW) and diffused surface acoustic wave (DSAW) wave motions in thin anisotropic single-crystal quartz substrates with metal electrodes surface mounted. The two concrete piezoelectric acoustic and stress finite element formulations are proposed and reviewed for comparison and for accurate prediction of thermomechanical waves and stresses, respectively. The relationships between the LSAW wave velocities and the substrate thickness variations are highlighted and reflected using the verified effective multivariable piezoelectric element computation. It is demonstrated that for cases of thin substructures, the reflecting LSAW waves become serious, but can be well suppressed. Hybrid leaky and disturbed piezoelectric SAW stabilities with respect to electrode and/or substrate heights and Euler angle are computationally studied and stressed in this paper.


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