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Some Remarks on the Identification of Damping Parameters at the Boundary of Vibrating Systems

[+] Author and Article Information
Peter Hagedorn, Ulrich Pabst

Institut für Mechanik, TH Darmstadt, D-64289 Darmstadt, Germany

Appl. Mech. Rev 48(11S), S107-S110 (Nov 01, 1995) doi:10.1115/1.3005057 History: Online April 29, 2009

Abstract

In many cases, vibrating mechanical systems permit a reliable mathematical modeling with parameter values which are reasonably well known beforehand, except for the joints between different subsystems and at the boundaries. The boundary stiffness, which is often assumed as infinite, and the damping at the boundary, which is frequently ignored, are typically not well known. In this note, we discuss the identification of the boundary stiffness and damping parameters from modal data. As an example, we treat an elastic steel beam, for which an experimental modal analysis had been carried out in our laboratory.

Copyright © 1995 by The American Society of Mechanical Engineers
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