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Modeling of Underwater Flexible Structures and Its Application to the Fishing Gear System Simulation

[+] Author Affiliations
Chun-Woo Lee, Ju-Hee Lee, Ji-Hoon Lee

Pukyong National University, Busan, Korea

Bong-Jin Cha, Hyun-Young Kim

National Fisheries Research and Development Institute, Busan, Korea

Paper No. OMAE2004-51333, pp. 685-690; 6 pages
doi:10.1115/OMAE2004-51333
From:
  • ASME 2004 23rd International Conference on Offshore Mechanics and Arctic Engineering
  • 23rd International Conference on Offshore Mechanics and Arctic Engineering, Volume 3
  • Vancouver, British Columbia, Canada, June 20–25, 2004
  • Conference Sponsors: Ocean, Offshore, and Arctic Engineering Division
  • ISBN: 0-7918-3745-9 | eISBN: 0-7918-3738-6
  • Copyright © 2004 by ASME

abstract

This paper describes a physically based model for underwater flexible systems and presents its simulation results. In this study, a flexible structure is divided into a finite number of elements and those elements are connected with flexible lines. The elements of a structure can be modeled using the mass-spring model. The model is described as a nonlinear and stiff equation by considering the elasticity of the lines and external forces. The Newmark β method is used for the numerical integration of the system. It is found that this method offers low computational times and a stable solution. Also introduced is an algorithm to design various flexible systems using computer graphics, an automatic model creating system from the designed plan and a three-dimensional graphics tool that can show the calculated results. Application examples in design and simulation for the commercial fishing gears are presented.

Copyright © 2004 by ASME

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