Journal of Korean Association for Spatial Structures (한국공간구조학회논문집)

Korean Association for Spatial Structures (한국공간구조학회)
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Zero-Stress Member Selection for Sizing Optimization of Truss Structures

트러스 구조물 사이즈 최적화를 위한 무응력 부재의 선택

  • Lee, Seunghye (Dept. of Architectural Engineering, Sejong Univ.) ;
  • Lee, Jonghyun (Dept. of Architectural Engineering, Sejong Univ.) ;
  • Lee, Kihak (Dept. of Architectural Engineering, Sejong Univ.) ;
  • Lee, Jaehong (Dept. of Architectural Engineering, Sejong Univ.)
  • 이승혜 (세종대학교 건축공학과) ;
  • 이종현 (세종대학교 건축공학과) ;
  • 이기학 (세종대학교 건축공학과) ;
  • 이재홍 (세종대학교 건축공학과)
  • Received : 2020.12.17
  • Accepted : 2021.01.05
  • Published : 2021.03.15
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Abstract

This paper describes a novel zero-stress member selecting method for sizing optimization of truss structures. When a sizing optimization method with static constraints is implemented, the member stresses are affected sensitively with changing the variables. However, because some truss members are unaffected by specific loading cases, zero-stress states are experienced by the elements. The zero-stress members could affect the computational cost and time of sizing optimization processes. Feature selection approaches can be then used to eliminate the zero-stress member from the whole variables prior to the process of optimization. Several numerical truss examples are tested using the proposed methods.

Keywords

References

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