Accession Number : AD0687237

Title :   NATURAL FREQUENCIES OF A PLATE WITH A TIME-VARIABLE MODULUS OF ELASTICITY,

Corporate Author : FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON 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 second-order 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 high-temperature 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