Free Vibrations of Ocean Cables under Currents

조류력을 받는 해양케이블의 자유진동해석

  • 김문영 (성균관대학교 토목공학과) ;
  • 김남일 (성균관대학교 토목공학과) ;
  • 윤종윤 (서울대학교 지구환경시스템공학부)
  • Published : 1999.12.01


A geometric non-linear finite element formulation of spatial ocean cable under currents is presented using multiple noded curved cable elements. Tangent stiffness and mass matrices for the isoparametric cable ele¬ment are derived and the initial equilibrium state of ocean cable subjected to self-weights, buoyancy, and current as well as support motions is determined using the load incremental method. Free vibration analysis of ocean cables is performed based on the initial equilibrium configuration. Numerical examples are presented and discussed in order to demonstrate the feasibility of the present finite element method and investigate dynamic characteristics of ocean cables.


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