RESEARCH PAPERS: Basic Vibrations Papers

The Spine of the Root Locus for the Viscous Damper

[+] Author and Article Information
D. Stern

General Electric Company, Applied Sciences Laboratory, Space Division, Philadelphia, Pa. 19101

J. Mech. Des 104(2), 466-475 (Apr 01, 1982) (10 pages) doi:10.1115/1.3256369 History: Received October 07, 1980; Online November 17, 2009


At present the optimization of a vibration isolator is performed in either the time domain or the frequency domain. A new approach, for optimization in the S-plane, is outlined and performed for the viscous damper. Optimization of the viscous damper in the S-plane results in a line that is defined as the spine of the root locus. Transformations are required between the S-plane and either the frequency domain or the time domain, therefore, time and frequency response plots are included for the spine damper. Two examples are used to illustrate the application of the root locus for single mass and multi-mass models.

Copyright © 1982 by ASME
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