Accession Number : AD0715137
Title : Forced Electromechanical Vibrations of a Sodium-Chloride Plate.
Descriptive Note : Technical rept.,
Corporate Author : COLUMBIA UNIV NEW YORK DEPT OF CIVIL ENGINEERING AND ENGINEERING MECHANICS
Personal Author(s) : Mindlin,Raymond D.
Report Date : OCT 1970
Pagination or Media Count : 24
Abstract : A recent extension of the classical theory of elastic dielectrics, to include an interaction between strain and polarization gradient, admits the possibility of excitation of electromechanical vibrations in crystals with a center of material symmetry; i.e., those in which there can be no classical piezoelectric effect. The new equations are applied to a case of forced thickness vibrations of a plate of sodium chloride crystal and the fundamental frequency, mode shape and electromechanical coupling coefficient are calculated--all subject to an assumption, regarding boundary conditions, which can be tested experimentally. (Author)
Descriptors : (*SODIUM CHLORIDE, VIBRATION), DIELECTRIC FILMS, CAPACITANCE, PIEZOELECTRIC CRYSTALS, STRESSES, POLARIZATION
Subject Categories : Solid State Physics
Distribution Statement : APPROVED FOR PUBLIC RELEASE