Dynamic Response of Tuned Secondary Systems

Ruzicka, G.C.; Robinson, A.R.

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Dynamic Response of Tuned Secondary Systems

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Title:	Dynamic Response of Tuned Secondary Systems
Author(s):	Ruzicka, G.C.; Robinson, A.R.
Subject(s):	Secondary systems Dynamic analysis Earthquake-resistant design
Abstract:	Light, flexible, "secondary" systems such as piping, penthouses and antenna towers are often attached to major structures. The purpose of this study is to investigate the dynamic response of secondary systems that are tuned to a natural frequency' of the primary system. Consideration is first given to simple structural models composed of a single degree- of-freedom secondary system attached to a single-degree-of-freedom primary system. Formulas for the response of the secondary system are obtained for various damping configurations. The effects of a slight detuning of the secondary system are also examined. The response expressions are then used to develop estimates for the maximum response of the secondary system. The accuracy of these estimates is assessed in a numerical study in which the exact and approximate responses are compared. Lastly, an expression is obtained for the response of a multi-degree-of-freedom tuned secondary system attached to a multi-degree-of-freedom primary system.
Issue Date:	1980-11
Publisher:	University of Illinois Engineering Experiment Station. College of Engineering. University of Illinois at Urbana-Champaign.
Series/Report:	Civil Engineering Studies SRS-485
Genre:	Technical Report
Type:	Text
Language:	English
URI:	http://hdl.handle.net/2142/14092
Sponsor:	National Science Foundation Grants ENV 75-08456, ENV 77-07190, and PFR 80-02582
Date Available in IDEALS:	2009-10-27
Identifier in Online Catalog:	500475