Vibration Control of Plates by Plate-Type Dynamic Vibration Absorbers

[+] Author and Article Information
T. Aida

Department of Civil Engineering, Yamaguchi University, 2557 Tokiwadai, Ube 775, Japan

K. Kawazoe

Japan steel Tower Co., Ltd., 1-7-1 Kitahama, Wakamatsu, Kitakyushu 808, Japan

S. Toda

Structural Mechanics Division, National Aerospace Laboratory, 1880 Jindaiji, Chofu, Tokyo 182, Japan

J. Vib. Acoust 117(3A), 332-338 (Jul 01, 1995) (7 pages) doi:10.1115/1.2874455 History: Received March 01, 1993; Online February 26, 2008


In this paper, a new plate-type dynamic vibration absorber is presented for controlling the several predominant modes of vibration of plate (mainplate) under harmonic excitation, which consists of a plate (dynamic absorbing plate) under the same boundary condition as the main plate and with uniformly distributed connecting springs and dampers between the main and dynamic absorbing plates. Equations of motion of the system in the modal coordinates of the main plate become equal to those of the two-degrees-of-freedom system with two masses and three springs. Formulas for optimum design of the plate-type dynamic vibration absorber are presented using the optimum tuning method of a dynamic absorber in two-degrees-of-freedom system, obtained by the Den Hartog method. Moreover, for practical problems regarding large-scale plates, an approximate tuning method of the plate-type dynamic absorbers with several sets of concentrated connecting springs and dampers is also presented. The numerical calculations demonstrate the effectiveness of the plate-type dynamic absorbers.

Copyright © 1995 by The American Society of Mechanical Engineers
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