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RESEARCH PAPERS: Offshore Mechanics

Nonlinear Response of a Dynamic System due to Oscillatory Flow

[+] Author and Article Information
Y. M. Huang, C. M. Krousgrill, A. K. Bajaj

School of Mechanical Engineering, Purdue University, West Lafayette, Ind. 47907

J. Offshore Mech. Arct. Eng 109(4), 345-356 (Nov 01, 1987) (12 pages) doi:10.1115/1.3257030 History: Received September 15, 1986; Revised April 22, 1987; Online October 30, 2009

Abstract

The dynamic response of a structure exhibiting nonlinear stiffness characteristics and excited by a nonzero mean oscillatory fluid flow is investigated. Both the method of averaging and a multi-frequency incremental harmonic balance approach are used in understanding the primary and secondary resonances in the response. Several parameter studies are presented where the results of these two methods are compared with those obtained by numerical integration and are discussed in detail. The results point to the need for a multi-frequency solution formulation for accurate representation of the response offset and to the difficulties of using the standard method of averaging formulation for investigation of secondary resonances in the response of this system.

Copyright © 1987 by ASME
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