A Method of Damping Synthesis From Substructure Tests

[+] Author and Article Information
L. Jezequel

Department of Mechanical Engineering, Ecole Centrale de Lyon, Lyon, France

J. Mech. Des 102(2), 286-294 (Apr 01, 1980) (9 pages) doi:10.1115/1.3254743 History: Received May 29, 1979; Online November 17, 2009


The assembly of damped linear structures along continual interfaces in order to achieve a damping synthesis may pose problems, because assembly methods are ill-conditioned when there is a high number of degrees of freedom at the interfaces. Moreover, identification methods using the smoothing of impedance curves do not give a Rayleigh-Ritz model. To overcome these difficulties this paper proposes a modal synthesis technique which uses two types of normal modes and a new orthogonalization of measured modes based on the Ritz-Galerkin method. It has given a real damping synthesis in the case of damped plate assembly.

Copyright © 1980 by ASME
Topics: Damping
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