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

The Society of Naval Architects of Korea (대한조선학회)
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On the Plastic Deformation of Polar-Class Ship's Single Frame Structures Subjected to Collision Loadings

충돌하중을 받는 빙해선박 단일 늑골 구조의 소성변형에 관한 연구

  • 민덕기 ((주)현대미포조선) ;
  • 신동완 (울산대학교 조선해양공학부) ;
  • 김신호 (울산대학교 조선해양공학부) ;
  • 허영미 (울산대학교 조선해양공학부) ;
  • 조상래 (울산대학교 조선해양공학부)
  • Received : 2011.09.29
  • Accepted : 2012.05.07
  • Published : 2012.06.20
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Abstract

The effects of temperature on the structural behavior of polar class vessels have been experimentally and numerically investigated. Experiments were carried out on single frame structures made of steel material, DH36, which is used for outer shell of the vessels making transit through the polar region. A knife edge type striker was dropped down onto single frame structures. The temperatures of the single frames were set to $-30^{\circ}C$, $-50^{\circ}C$ and room temperature. The deflection around the mid-point of the single frame was measured and numerically simulated using finite element model. Strain rate effect on the structural behavior has been investigated and turned out that the strain rate effect can be neglected. From the results of the experiment and numerical analyses, it has been noticed that the permanent deflection at lower temperature was reduced due to a temperature hardening of material as expected.

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References

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