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

The Society of Naval Architects of Korea (대한조선학회)
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Comparisons of Multi Material ALE and Single Material ALE in LS-DYNA for Estimation of Acceleration Response of Free-fall Lifeboat

자유낙하식 구명정의 가속도 응답 추정을 위한 LS-DYNA 에서의 다중물질 ALE 와 단일물질 ALE의 비교

  • Bae, Dong-Myung (Department of Naval Architecture and Marine Systems Engineering, Pukyong National University) ;
  • Zakki, Ahmad Fauzan (Department of Naval Architecture and Marine Systems Engineering, Pukyong National University)
  • 배동명 (부경대학교 조선해양시스템공학과) ;
  • 자키 (부경대학교 조선해양시스템공학과)
  • Received : 2011.02.11
  • Accepted : 2011.11.07
  • Published : 2011.12.20
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Abstract

An interest in Arbitrary Lagrangian Eulerian (ALE) finite element methods has been increased due to more accurate responses in Fluid-Structure Interaction(FSI) problems. The multi-material ALE approach was applied to the prediction of the acceleration response of free-fall lifeboat, and its responses were compared to those of the single-material ALE one. It could be found that even though there was no big difference in the simulation responses of two methods, the single-material and multi-material ALE ones, the latter multi-material ALE method showed a little bit more close response to those of experimental results compared to the former single-material ALE one, especially in the x- and z-direction acceleration responses. Through this study, it could be found that several parameters in the ALE algorithms have to be examined more carefully for a good structural safety assessment of FSI problems.

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References

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