Identification of Nonlinear Vibrating Structures: Part II—Applications

[+] Author and Article Information
S. F. Masri, R. K. Miller, A. F. Saud

Department of Civil Engineering, University of Southern California, Los Angeles, CA 90089-0242

T. K. Caughey

Division of Engineering and Applied Science, California Institute of Technology, Pasadena, CA 91106

J. Appl. Mech 54(4), 923-929 (Dec 01, 1987) (7 pages) doi:10.1115/1.3173140 History: Received January 13, 1987; Revised June 23, 1987; Online July 21, 2009


A time-domain procedure for the identification of nonlinear vibrating structures, presented in a companion paper, is applied to a “calibration” problem which incorporates realistic test situations and nonlinear structural characteristics widely encountered in the applied mechanics field. The “data” set is analyzed to develop suitable, approximate nonlinear system representations. Subsequently, a “validation” test is conducted to demonstrate the range of validity of the method under discussion. It is shown that the procedure furnishes a convenient means for constructing reduced-order nonlinear nonparametric mathematical models of reasonably high fidelity in regard to reproducing the response of the test article under dynamic loads that differ from the identification test loads.

Copyright © 1987 by ASME
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