Free Vibrations of a Rectangular Plate with Viscoelastic Stiffeners

概要

論文の詳細を見る
Free vibrations of a rectangular plate which is hinged along two opposite edges and has viscoelastic stiffeners transverse to the hinged edges are discussed in this paper. The governing equations are derived considering the inplane deformation of the plate and the effects of shear deformation, rotatory inertia and torsional rigidity of stiffeners. Conventional trigonometric series are used to reduce the governing equations to sets of matrix equations. Transfer matrix techniques are used to determine the frequency equation. The complex roots of the frequency equation are obtained and changes in natural frequencies, logarithmic decrements and normal modes are investigated. It is shown that an optimum number of stiffeners exists for which the value of logarithmic decrement becomes maximum, Solutions are compared with experimental observations of logarithmic decrements and the agreement is found to be reasonable.
一般社団法人日本機械学会の論文