Accession Number : AD0470550

Title :   UPPER AND LOWER BOUNDS FOR THE FREQUENCIES OF RECTANGULAR FREE PLATES.

Descriptive Note : Technical memo.,

Corporate Author : JOHNS HOPKINS UNIV SILVER SPRING MD APPLIED PHYSICS LAB

Personal Author(s) : Bazley,Norman W. ; Fox,David W. ; Stadter,James T.

Report Date : AUG 1965

Pagination or Media Count : 31

Abstract : This study applied a recently developed method for lower bounds and the Rayleigh-Ritz procedure for upper bounds to the estimation of the natural frequencies of vibration of thin uniform free rectangular plates. The applicability of the lower bound procedure is demonstrated, and calculations are given for a symmetry class for rectangular plates and for a sub-symmetry class for square plates. The resulting bounds yield improvements over previously published results and demonstrate the utility of the lower bound methods. (Author)

Descriptors :   (*RECTANGULAR BODIES, VIBRATION), DIFFERENTIAL EQUATIONS, THEORY

Distribution Statement : APPROVED FOR PUBLIC RELEASE