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

The Society of Naval Architects of Korea (대한조선학회)
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Particle-based Numerical Simulation of Continuous Ice Breaking Process around Wedge-type Model Ship

쐐기형 모형선 주위 연속 쇄빙과정에 관한 입자 기반 수치 시뮬레이션

  • Ren, Di (Department of Naval Architecture and Ocean Engineering, Pusan National University) ;
  • Sin, Woo-Jin (Department of Naval Architecture and Ocean Engineering, Pusan National University) ;
  • Kim, Dong-Hyun (Department of Naval Architecture and Ocean Engineering, Pusan National University) ;
  • Park, Jong-Chun (Department of Naval Architecture and Ocean Engineering, Pusan National University) ;
  • Jeong, Seong-Yeob (Korea Research Institute of Ships and Ocean Engineering)
  • ;
  • 신우진 (부산대학교 조선해양공학과) ;
  • 김동현 (부산대학교 조선해양공학과) ;
  • 박종천 (부산대학교 조선해양공학과) ;
  • 정성엽 (한국해양과학기술원 부설 선박해양플랜트연구소)
  • Received : 2019.10.15
  • Accepted : 2019.12.16
  • Published : 2020.02.20
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Abstract

This paper covers the development of prediction techniques for ice load on ice-breakers operating in continuous ice-breaking under level ice conditions using particle-based continuum mechanics. Ice is assumed to be a linear elastic material until the fracture occurs. The maximum normal stress theory is used for the criterion of fracture. The location of the crack can be expressed using a local scalar function consisting of the gradient of the first principal stress and the corresponding eigen-vector. This expression is used to determine the relative position of particle pair to the new crack. The Hertz contact model is introduced to consider the collisions between ice fragments and the collisions between hull and ice fragments. In order to verify the developed technique, the simulation results for the three-point bending problems of ice-specimen and the continuous ice-breaking problem around a wedge-type model ship with bow angle of 20° are compared with the experimental results carrying out at Korea Research Institute of Ships and Ocean Engineering (KRISO).

Keywords

References

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