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Estimation of Roll Damping for Transportation Barges

[+] Author Affiliations
Sharad S. Dhavalikar, Amresh Negi

Indian Register of Shipping, Mumbai, MH, India

Paper No. OMAE2009-79024, pp. 1-8; 8 pages
doi:10.1115/OMAE2009-79024
From:
  • ASME 2009 28th International Conference on Ocean, Offshore and Arctic Engineering
  • Volume 1: Offshore Technology
  • Honolulu, Hawaii, USA, May 31–June 5, 2009
  • Conference Sponsors: Ocean, Offshore and Arctic Engineering Division
  • ISBN: 978-0-7918-4341-3 | eISBN: 978-0-7918-3844-0
  • Copyright © 2009 by ASME

abstract

For ships, barges and similar long offshore structures roll natural period generally falls within the frequency range of a typical wave energy spectrum generally experienced by them. This causes dynamic amplification of rolling motion. For these structures the roll damping is highly nonlinear. Therefore it is of utmost importance that good estimation of roll damping is made for such structures. Linear radiation diffraction theory can not predict damping for roll motion as good as for other degrees of freedom. For ships and barges radiation damping (in case of roll) is generally quite small compared to the total damping in the system. Hence, additional damping needs to be added for solving roll motion equation.

Copyright © 2009 by ASME

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