
Accession Number : AD0687237
Title : NATURAL FREQUENCIES OF A PLATE WITH A TIMEVARIABLE MODULUS OF ELASTICITY,
Corporate Author : FOREIGN TECHNOLOGY DIV WRIGHTPATTERSON AFB OHIO
Personal Author(s) : Gnuni,V. Ts.
Report Date : 03 MAR 1969
Pagination or Media Count : 8
Abstract : The natural frequencies of a thin, isotropic, simply supported rectangular plate of constant thickness with sides a and b is discussed. The modulus of elasticity of the plate material varies with time. Assuming that the hypothesis on the preservation of normals is valid, and taking into account the inertia forces of the plate, a secondorder differential equation is written (in accordance with S. P. Timoshenko's theory) which describes the free vibration of the plate under discussion. A solution of this equation, analogous to that used by the author in investigating the vibration of a thin plate in a hightemperature field, is written which is correct only for certain instants during vibration.
Descriptors : (*PANELS, VIBRATION), MODULUS OF ELASTICITY, RESONANT FREQUENCY, METAL PLATES, USSR
Subject Categories : Mechanics
Distribution Statement : APPROVED FOR PUBLIC RELEASE