0
RESEARCH PAPERS: Vibration and Sound

Recent Developments in Multiple Input Modal Analysis

[+] Author and Article Information
E. J. Breitbach

Structural Dynamics Division, German Aerospace Research Establishment (DFVLR), Institute of Aeroelasticity, Goettingen, West Germany

J. Vib., Acoust., Stress, and Reliab 110(4), 478-484 (Oct 01, 1988) (7 pages) doi:10.1115/1.3269554 History: Received August 15, 1987; Online November 23, 2009

Abstract

Over the last two decades in experimental modal analysis many different approaches have been developed for application to a great variety of structural engineering problems. The effectiveness of modal testing depends directly on the capability to construct optimal excitation force vectors in order to identify a complete set of normal modes in a frequency band of interest and to extract the corresponding modal parameters. These tasks can be considerably facilitated by means of so-called mode indicator functions (MIF) the most current of which will be thoroughly investigated in order to reveal their features and capabilities. Furthermore, emphasis will be placed on the problem of finding appropriate force vectors to excite either real or complex normal modes. A new concept to determine optimal force vectors for the excitation of complex normal modes will be presented. In the context with the definition of complex normal modes the problem of transforming complex normal modes into real normal modes will be treated as well.

Copyright © 1988 by ASME
Your Session has timed out. Please sign back in to continue.

References

Figures

Tables

Errata

Discussions

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related Journal Articles
Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In