せん断荷重を受ける矩形板の亜音速流中における弾性不安定

抄録

The elastic instability of an orthotropic rectangular panel subjected to a shearing load, supported on an elastic foundation and exposed to a subsonic inviscid flow over its upper surface, is investigated theoretically. On the basis of the small deflection plate theory and the classical linearized potential theory, the problem is solved for both the clamped and simply supported boundary conditions by means of the Galerkin method and Fourier transforms. It is found that the divergence velocity decreases with an increase in the fluid compressibility and the shearing load increases with the values of the orthotropic parameters and the spring stiffness of the elastic foundation. It is confirmed that the divergence velocity of the rectangular panel with a small aspect ratio is equal to that of the infinite panel.