Nonlinear flutter of curved plates, II

In a series of papers by the author and his colleagues, nonlinear flutter analyses of plates have been made. Most recently in Part I curved plates were considered. In the present paper, Part II, numerical results are presented for three-dimensional curved plates of constant curvature and simply supported on all edges. Quasi-steady supersonic aerodynamic theory is employed. These numerical results demonstrate some of the important qualitative and quantitative differences between three-dimensional plates and the two-dimensional ones discussed in detail in Part I. In particular it is shown that 1) three-dimensional plates with streamwise curvature are more significantly affected by preflutter static deformation than two-dimensional ones and 2) three-dimensional plates with spanwise curvature are very sensitive to the degree of in-plane restraint insofar as determining the flutter boundary as well as the subsequent flutter oscillation. © 1970, American Institute of Aeronautics and Astronautics, Inc., All rights reserved.

Duke Scholars

Author Earl H. Dowell Thomas Lord Department of Mechanical Engineering and Materia ...