Accession Number : AD0661197

Title :   ANHARMONIC, THICKNESS-TWIST OVERTONES OF THICKNESS-SHEAR AND FLEXURAL VIBRATIONS OF RECTANGULAR, AT -CUT, QUARTZ PLATES.

Descriptive Note : Interim technical rept. no. 4,

Corporate Author : COLUMBIA UNIV NEW YORK DEPT OF CIVIL ENGINEERING AND ENGINEERING MECHANICS

Personal Author(s) : Mindlin,R. D. ; Spencer,W. J.

Report Date : JUN 1967

Pagination or Media Count : 41

Abstract : Equations of motion accommodating thickness-twist overtones of thickness-shear and flexural vibrations of rectangular, AT-cut, quartz plates are obtained. The equations are solved for plates with all four edges free. The predicted frequencies are compared with measured resonances. X-ray topographs of typical thickness-twist overtone modes are exhibited which verify that the mode shapes correspond to those predicted. (Author)

Descriptors :   (*QUARTZ, VIBRATION), (*QUARTZ RESONATORS, EQUATIONS OF MOTION), RESONANT FREQUENCY, MATHEMATICAL PREDICTION, PIEZOELECTRIC CRYSTALS

Subject Categories : Electrical and Electronic Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE