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Time Domain Hydroelastic Analysis of a Flexible Marine Structure Using State-Space Models

[+] Author Affiliations
Reza Taghipour, Tristan Perez, Torgeir Moan

Norwegian University of Science and Technology, Trondheim, Norway

Paper No. OMAE2007-29272, pp. 519-527; 9 pages
doi:10.1115/OMAE2007-29272
From:
  • ASME 2007 26th International Conference on Offshore Mechanics and Arctic Engineering
  • Volume 4: Materials Technology; Ocean Engineering
  • San Diego, California, USA, June 10–15, 2007
  • Conference Sponsors: Ocean, Offshore and Arctic Engineering Division
  • ISBN: 0-7918-4270-3 | eISBN: 0-7918-3799-8
  • Copyright © 2007 by ASME

abstract

This article deals with time-domain hydroelastic analysis of a marine structure. The convolution terms in the mathematical model are replaced by their alternative state-space representations whose parameters are obtained by using the realization theory. The mathematical model is validated by comparison to experimental results of a very flexible barge. Two types of time-domain simulations are performed: dynamic response of the initially inert structure to incident regular waves and transient response of the structure after it is released from a displaced condition in still water. The accuracy and the efficiency of the simulations based on the state-space model representations are compared to those that integrate the convolutions.

Copyright © 2007 by ASME

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