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The description and measurement of nonlinear damping in structures

  • Alan P. Jeary

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

Abstract

This paper addresses the question of a description of the damping characteristics inherent in real structures. A discussion of the mechanisms causing energy loss and the practicalities of measurement when the parameter is not only nonlinear but also the forcing function and the response are nonstationary is followed by some practical results obtained from very tall buildings. The random decrement signature is presented as being particularly useful for the measurement of damping characteristics under hostile loading regimes, and its use is demonstrated and described.
© 1996 Elsevier Science B.V.
Original languageEnglish
Pages (from-to)103-114
JournalJournal of Wind Engineering and Industrial Aerodynamics
Volume59
Issue number2-3
DOIs
Publication statusPublished - Mar 1996
Externally publishedYes

Bibliographical note

Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

Funding

The author gratefully acknowledges the financial support for research through the auspices of the University Grants Committee (UGC) of Hong Kong, and the National Science Foundation of the United States of America. Much of the work on the conversion of concrete was performed under a UGC grant by X.F. Gao. One of the early contributions to the subject area of damping measurement was made by Dr. Howard S. Ward, who sadly passed away in October 1995. His impetus to early damping measurements from randomly excited structures, including some included in the studies performed by the author, is gratefully acknowledged.

Research Keywords

  • Damping evaluation
  • Full-scale measurement
  • Microcracking
  • Nonlinear damping
  • Random decrement signature
  • Stationarity

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