Title

Prony-based method for time-frequency analysis of marine riser viv data

Authors

Wen Long Yang, Ocean University of China
S.-L. James Hu, University of Rhode Island
Ze Li, Texas A&M University

Document Type

Conference Proceeding

Date of Original Version

9-16-2013

Abstract

Vortex induced vibrations (VIV) of long flexible risers subjected to ocean currents exhibit a strongly nonlinear phenomenon. Although significant efforts have been done for the frequency or time-frequency analysis of this complicated phenomenon, an effective method is still lacking. The objective of this paper is to provide a new method - A Prony-based method - for analyzing the time-varying frequency components of VIV response signals. Physical insight associated with the VIV motion can be further gained through the Prony-based analysis partially because it does not suffer the leakage and frequency resolution problems of the Fourier-based methods. Copyright © 2013 by the International Society of Offshore and Polar Engineers (ISOPE).

Publication Title, e.g., Journal

Proceedings of the International Offshore and Polar Engineering Conference

Citation/Publisher Attribution

Yang, Wen Long, S.-L. J. Hu, and Ze Li. "Prony-based method for time-frequency analysis of marine riser viv data." Proceedings of the International Offshore and Polar Engineering Conference (2013): 461-468. https://digitalcommons.uri.edu/oce_facpubs/258