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RESEARCH PAPERS: Medical Devices and Sporting Equipment

Dynamic Shear Response of Rectangular Plates with Initial Imperfections

[+] Author and Article Information
H. Pasic, G. Herrmann

Division of Applied Mechanics, Department of Mechanical Engineering, Stanford University, Stanford, Calif. 94305

J. Mech. Des 102(4), 769-775 (Oct 01, 1980) (7 pages) doi:10.1115/1.3254820 History: Received November 01, 1979; Online November 17, 2009

Abstract

The paper presents an analysis of the elastic response of a simply supported, imperfect, rectangular plate subjected to an in-plane supercritical shear force, suddenly applied at one of the edges in the form of a square pulse. The influence of the initial plate irregularities on the overall response during both loading and postloading period is investigated. The averaged in-plane inertia forces are taken into account. The analysis is an extension of the studies of the response to in-plane normal forces of plates of infinite width and finite length given in [1], and of a finite plate given in [2]. The results indicate that the frequency spectra of free vibrations during the post-loading regime are controlled by the initial irregularities distribution, plate geometry and the load levels.

Copyright © 1980 by ASME
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