Transactions of the Korean Society for Noise and Vibration Engineering (한국소음진동공학회논문집)

The Korean Society for Noise and Vibration Engineering (한국소음진동공학회)
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Development of NASTRAN-based Optimization Framework for Vibration Optimum Design of Ship Structure.

선박 구조물의 진동 최적설계를 위한 NASTRAN 기반 최적화 프레임웍의 제안

  • 공영모 (㈜대우조선해양 진동소음 R&D팀) ;
  • 최수현 (㈜대우조선해양 진동소음 R&D팀) ;
  • 채상일 (부경대학교 대학원 기계공학부) ;
  • 송진대 (부경대학교 대학원 기계공학부) ;
  • 김용한 (부경대학교 대학원 기계공학부) ;
  • 양보석 (부경대학교 대학원 기계공학부)
  • Published : 2005.11.01
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Abstract

Recently, the issue of ship nitration due to the large scale, high speed and lightweight of ship is emerging. For pleasantness in the cabin, shipbuilders are asked for strict vibration criteria and the degree of nitration level at a deckhouse became an important condition for taking order from customers. This study proposes a new optimization framework that is NASTRAN external call type optimization method (OptShip) and applies to an optimum design to decrease the nitration level of a deckhouse. The merits of this method are capable of using of global searching method and selecting of various objective function and design variables. The global optimization algorithms used here are random tabu search method which has fast converging speed and searches various size domains and genetic algorithm which searches multi-point solutions and has a good search capability in a complex space. By adapting OptShip to full-scale model, the validity of the suggested method was investigated.

Keywords

References

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Cited by

  1. The Diagnosis and Evaluation of Vibration and Noise in Vessel vol.32, pp.1, 2008, https://doi.org/10.5916/jkosme.2008.32.1.42
  2. Application of nonlinear integer programming for vibration reduction optimum design of ship structure vol.23, pp.8, 2009, https://doi.org/10.1007/s12206-009-0434-0