Nonlinear Analysis of a Dynamical System Being Pulled by Cables

[+] Author and Article Information
J. A. P. Aranha, C. A. Martins

Instituto de Pesquisas Tecnologicas, Cidade Universita, São Paulo, Brazil

J. Appl. Mech 50(3), 652-656 (Sep 01, 1983) (5 pages) doi:10.1115/1.3167105 History: Received August 01, 1982; Revised November 01, 1982; Online July 21, 2009


Offshore pipeline must, in certain situation, be pulled by means of cables placed in a barge. An important nonlinear aspect of the wave-induced dynamic motion is the fact that the cable can become loose. This paper analyzes a simplified dynamical model whose steady state is obtained analytically. A feature of this model is that the output steady state frequency changes from ω to ω/2 as the input (wave) frequency ω increases. An order of magnitude analysis shows that this nonlinear effect is of importance for the usual offshore pipeline.

Copyright © 1983 by ASME
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