Title :
On the effect of the electric field in the free space surrounding a finite piezoelectric body
Author :
Jiashi Yang ; Honggang Zhou
Author_Institution :
Key Lab. for Adv. Mater. & Rheological Properties, Xiangtan Univ.
Abstract :
This note shows that a widely used approximation in analyzing motions of a finite piezoelectric body (i.e., the normal component of the electric displacement vector at an unelectroded material-air interface can be taken to be zero when the dielectric constant of the material is much larger than the electric permittivity of the free space) may lead to inaccurate results
Keywords :
dispersion relations; elastic waves; interface phenomena; permittivity; piezoelectricity; dielectric constant; electric displacement vector; electric field effect; electric permittivity; finite piezoelectric body; free space; unelectroded material-air interface; Boundary value problems; Ceramics; Dielectric constant; Dielectric materials; Electric potential; Functional analysis; Permittivity; Piezoelectric materials; Piezoelectric polarization; Tensile stress;
Journal_Title :
Ultrasonics, Ferroelectrics, and Frequency Control, IEEE Transactions on
DOI :
10.1109/TUFFC.2006.1678181
