Parametric Resonance of Stiffened Rectangular Plates

[+] Author and Article Information
R. C. Duffield

Department of Mechanical and Aerospace Engineering, University of Missouri, Columbia, Mo.

N. Willems

Department of Civil Engineering, University of Kansas, Lawrence, Kans.

J. Appl. Mech 39(1), 217-226 (Mar 01, 1972) (10 pages) doi:10.1115/1.3422616 History: Received September 12, 1970; Online July 12, 2010


This investigation is concerned with the onset of parametric instability of a simply supported stiffened rectangular plate subjected to in-plane sinusoidal dynamic forces. An analytical analysis is developed for the stiffened plate with the stiffeners treated as discrete elements. The results show that the location and size of the stiffeners have a significant effect on the location and contour of the boundaries of the parametric instability regions when compared with those of a flat unstiffened plate. Experimental verification is obtained for stiffened plates with a single centrally located stiffener transverse to an in-plane periodic force acting on two opposite edges.

Copyright © 1972 by ASME
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