In-plane P-SV waves from a piezoelectric strip actuator: exact versus effective boundary condition solutions
Artikel i vetenskaplig tidskrift, 2005

A piezoelectric strip of finite width and thickness is placed on top of an isotropic elastic half-space. It operates in actuator mode and a time harmonic voltage is thus applied across it. The piezoelectric material is of type $6mm$ oriented so that a 2D inplane (P-SV) problem results. By Fourier series expansions the problem is solved exactly and this result is compared to the case when the piezoelectric strip is replaced by an effective boundary condition, which is derived by series expansions in the thickness coordinate in the piezoelectric strip. At low frequencies the results agree very well and this corresponds to the situation often met in practice. In general, the effective boundary condition should be much easier to apply, for example when a FEM program is used.

piezoelectricity

actuator

Författare

Anders E Boström

Chalmers, Tillämpad mekanik, Dynamik

Bixing Zhang

Institute of Acoustics Chinese Academy of Sciences

IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control

0885-3010 (ISSN)

Vol. 52 9 1594-1600

Ämneskategorier

Teknisk mekanik

DOI

10.1109/TUFFC.2005.1516032