Linearization Technique for Probabilistic Riser Frequency Domain Analysis

[+] Author and Article Information
A. Ertas

Department of Mechanical Engineering, Texas Tech University, Lubbock, Tex. 79409

J. Energy Resour. Technol 108(4), 292-296 (Dec 01, 1986) (5 pages) doi:10.1115/1.3231279 History: Received August 15, 1985; Revised September 25, 1986; Online October 22, 2009


This paper presents a rigorous derivation of equations for the minimization of the mean-squared error and defines the describing function for different input components. The technique has a direct application to analyze the dynamic response of marine risers. The describing function method will be used to determine the linearization coefficients for the nonlinear drag effects, taking into account a steady current and the random sea waves. The method will have significant impact on other problems such as fixed offshore platforms and tension leg platforms.

Copyright © 1986 by ASME
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