A Study on Large Scale FEM for Structural Analysis of a Crane Vessel Using Superelement Technique

슈퍼요소기법을 이용한 대규모 유한요소법의 크레이선 구조해석 적용 연구

  • 조규남 (홍익대학교 조선해양공학과) ;
  • 장영식 (현대선박해양연구소) ;
  • 이지현 (현대선박해양연구소)
  • Published : 1994.09.01

Abstract

Superelement technique for structural analysis of large scale objects such as airplanes or vessels is effective especially in the harsh hardware environments. In this paper, a crane vessel of OHI 5000 which is capable of lifting 5000 tons in tie-backs and capable of revolving with 3000 tons is investigated in the view point of structural safety using superelements through the substructure scheme. Also an effective substructure procedure, a unique load extraction method and finite element modeling technique are demonstrated. Comprehensive reinforcement blueprints are derived based on the analysis results. Successful application of substructure technique is achieved through the structural analysis of the crane vessel. The analysis technique developed in this paper can be a guideline for similar large scale structures' relevant safety identification.

슈퍼요소를 이용한 구조해석은 항공기나 선박등 대형구조물의 해석에서 장점을 가지며 하드웨어의 제한된 조건속에서 효과적인 결과를 준다. 본 논문에서는 고정된 타이벡(ite back) 상태에서 세게 최대의 5000톤, 회전 상태에서 3000톤을 들어 올릴수 있는 크레인선의 구조 안전성 검토를 위하여 슈퍼요소로 분할된 부분 구조물 해석을 다루었으며, 효과적인 부분구조화(substructuring)과정과 독특한 하중추출방법 및 유한요소 모델링 기법을 제시하고 있다. 또한 해석결과에 근거한 실질적인 구조물의 총괄적 국부보강방법을 보여주고 있다. 대형 크레인선의 구조해석적용 연구를 통하여 부분구조기법의 효율성을 확립하였으며 이러한 해석기법을 통하여 새로운 형태의 유사한 구조물에 대한 해석지침을 제시하고 있다.

Keywords

References

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