
Accession Number : AD0673653
Title : ON THE NONLINEAR FLUTTER OF A PLATE FIXED ALONG ITS PERIMETER (O NELINEINOM FLATTERE PLASTINY, ZASHCHEMLENNOI PO KONTURU),
Corporate Author : FOREIGN TECHNOLOGY DIV WRIGHTPATTERSON AFB OHIO
Personal Author(s) : Makarov,B. P.
Report Date : 31 AUG 1967
Pagination or Media Count : 11
Abstract : An investigation was made of the stability of rectangular plane plates clamped along the edge, with one side in a gas stream of large supersonic velocity. The normal deflection is assumed to be comparable with the thickness but small with regard to the length of the sides. Aerodynamic forces are determined on the basis of an asymptotic formula valid for velocities considerably exceeding the velocity of sound. The initial system of equations of motion is reduced to two ordinary differential equations by Galerkin's method. Periodic solutions of these are found by the method of small parameter. The calculations show that for moderate values of mu = Mh/a (M being Mach's number, h the thickness, a the length of the plate) the amplitude is of the order of h and the excitation of flutter is soft. (Author)
Descriptors : (*PANELS, FLUTTER), RECTANGULAR BODIES, NONLINEAR SYSTEMS, SUPERSONIC CHARACTERISTICS, AEROELASTICITY, ANGLE OF ATTACK, DEFORMATION, EQUATIONS OF MOTION, USSR
Subject Categories : Structural Engineering and Building Technology
Fluid Mechanics
Distribution Statement : APPROVED FOR PUBLIC RELEASE