Journal of the Korean Society of Manufacturing Technology Engineers (한국생산제조학회지)

The Korean Society of Manufacturing Technology Engineers (한국생산제조학회)
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Reliability-Based Shape Optimization Under the Stress Constraints

응력 제한조건하의 신뢰성 기반 형상 최적설계

  • 오영규 (한양대학교 대학원 기계공학과) ;
  • 박재용 (한양대학교 대학원 기계공학과) ;
  • 임민규 (한양대학교 대학원 기계공학과) ;
  • 박재용 (한양대학교 대학원 기계공학과) ;
  • 한석영 (한양대학교 기계공학부)
  • Received : 2010.04.13
  • Accepted : 2010.07.12
  • Published : 2010.08.15
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Abstract

The objective of this study is to integrate reliability analysis into shape optimization problem using the evolutionary structural optimization (ESO) in the application example. Reliability-based shape optimization is formulated as volume minimization problem with probabilistic stress constraint under minimization max. von Mises stress and allow stress. Young's modulus, external load and thickness are considered as uncertain variables. In order to compute reliability index, four methods, i.e., reliability index approach (RIA), performance measure approach (PMA), single-loop singlevector (SLSV) and adaptive-loop (ADL), are used. Reliability-based shape optimization design process is conducted to obtain optimal shape satisfying max. von Mises stress and reliability index constraints with the above four methods, and then each result is compared with respect to numerical stability and computing time.

Keywords

References

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