Journal of the Society of Naval Architects of Korea (대한조선학회논문집)

The Society of Naval Architects of Korea (대한조선학회)
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Development of Ship Dynamics Model by Free-Running Model Tests and Regression

자유항주모형시험과 회귀분석을 통한 선체 동역학 모델의 개발

  • Kim, Kiwon (Department of Naval Architecture and Ocean Engineering, Chungnam National University) ;
  • Kim, Hoyong (Department of Naval Architecture and Ocean Engineering, Chungnam National University) ;
  • Choi, Sungeun (Department of Naval Architecture and Ocean Engineering, Chungnam National University) ;
  • Na, Ki-In (Intelligent Robotics Research Division, Electronics and Telecommunications Research Institute) ;
  • Lee, Hyuk (Department of System Dynamics, Korea Institute of Machinery and Materials) ;
  • Seo, Jeonghwa (Department of Naval Architecture and Ocean Engineering, Chungnam National University)
  • 김기원 (충남대학교 선박해양공학과) ;
  • 김호용 (충남대학교 선박해양공학과) ;
  • 최성은 (충남대학교 선박해양공학과) ;
  • 나기인 (한국전자통신연구원) ;
  • 이혁 (한국기계연구원) ;
  • 서정화 (충남대학교 선박해양공학과)
  • Received : 2021.12.31
  • Accepted : 2022.04.07
  • Published : 2022.06.20
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Abstract

The present study suggests a procedure of establishing a ship dynamics modeling by regression of free-running model test results. The hydrodynamic force and moment of the whole model ship is derived from the low-pass filtered acceleration in the turning circle and zigzag maneuver tests. Force and moment of the propeller and rudder are separated from that of the whole ship to acquire the hull force and moment terms, based on the principles of the component model. The low-pass filter frequency is verified in prior to dynamics modeling, to find the threshold frequency of 2.5 Hz. The dynamics modeling of the hull is compared with the component modeling by captive model tests. Because of strong correlation between sway velocity, yaw angular velocity, and heel angle, each maneuvering coefficient is not able to be validated, but the whole modeling shows good agreement with the captive model tests.

Keywords

Acknowledgement

본 연구는 산업통상자원부 및 방위사업청 재원으로 민군협력진흥원에서 수행하는 민군기술협력사업(UM19304RD3), 한국연구재단 지원의 '우수신진연구(NRF-2021R1C1C1014206)'사업과 Office of Naval Research Global의 지원(N62909-20-1-2069)으로 수행된 연구임.

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