Isogeometric Shape Design Optimization of Structures under Stress Constraints

응력 제한조건을 갖는 구조물의 아이소-지오메트릭 형상 최적설계

  • 안승호 (서울대학교 조선해양공학과) ;
  • 김민근 (서울대학교 조선해양공학과) ;
  • 조선호 (서울대학교 조선해양공학과/RIMSE)
  • Received : 2010.07.19
  • Accepted : 2010.04.29
  • Published : 2010.06.30

Abstract

In this paper, the design optimization of structures with stress constraints is performed using isogeometric shape optimization method. The stress constraints have an important role in design optimization problems since stress concentration could result in structural failure. To represent exact geometry in analysis, the isogeometric analysis method uses the same basis functions as used in the CAD geometry. The geometrically exact model can be used in both stress and design sensitivity analyses so that it can yield more precise optimal design than finite element one. Through numerical examples, the isogeometric approach turns out to be effective in shape optimization problems under stress constraints.

Acknowledgement

Supported by : 한국연구재단

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