Journal of Ocean Engineering and Technology (한국해양공학회지)

Korean Society of Ocean Engineers (한국해양공학회)
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3D Nonlinear Fully Coupled Simulation of Cable and Tow-fish System

케이블-수중 예인체 시스템의 3차원 비선형 완전 연성해석

  • Go, Gwangsoo (School of Naval Architecture and Ocean Engineering, University of Ulsan) ;
  • Lee, Euntaek (School of Naval Architecture and Ocean Engineering, University of Ulsan) ;
  • Ahn, Hyung Taek (School of Naval Architecture and Ocean Engineering, University of Ulsan)
  • 고광수 (울산대학교 조선해양공학부) ;
  • 이은택 (울산대학교 조선해양공학부) ;
  • 안형택 (울산대학교 조선해양공학부)
  • Received : 2016.11.21
  • Accepted : 2016.12.16
  • Published : 2016.12.31
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Abstract

In this paper, a strongly coupled method for investigating the interaction between a cable and tow-fish is presented. The nodal position finite element method was utilized to analyze the nonlinear cable dynamics, and 6DOF equations of motion were employed to describe the 3D rigid body motion of the tow-fish. Combining cable and tow-fish systems into a single formulation allowed the two nonlinear systems to be strongly coupled into a unified nonlinear system. This strongly coupled system was numerically integrated in the time domain using a predictor/multi-corrector Newmark algorithm. To demonstrate the validity, efficacy, and applicability of the current approach, two different scenarios (virtual and sea trial) were simulated, and the simulation results were validated using the physical plausibility and the sea trial test.

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References

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  1. Simulation-Based Determination of Hydrodynamic Derivatives and 6DOF Motion Analysis for Underwater Vehicle vol.31, pp.5, 2017, https://doi.org/10.26748/KSOE.2017.10.31.5.371