Development of Optimum Structural Analysis Program for Space Truss Structures

스페이스 트러스 구조에 대한 최적화 구조 해석 프로그램의 개발

  • Received : 1998.06.17
  • Published : 1998.09.30

Abstract

Recently, the space truss has been attracted by many designers because of their ability to support significant loads with a minimum material. And it is relatively flexible to design the configuration of structures. This paper presents a volume optimization for the space truss on the basis of result evaluated from nonlinear analysis. The optimization of the truss is done by nonlinear optimum GINO(General Interactive Nonlinear Optimizer) program. The objective function considered is the volume of the steel bars. The constraints for optimum design are the design limits, such as the axial force strength, maximum slenderness, minimum thickness, allowable deflection and ratio of the external diameter to thickness of the circular tube bars.

스페이스 프레임 구조물은 내부 기둥이 없는 대공간을 덮을 수 있다는 장점 때문에 현재의 많은 구조가와 설계자들에게 큰 관심을 받고 있다. 본 연구에서 다루는 강성구조 이산화시스템인 스페이스 트러스는 기하학적 비선형항이 포함된 대변형 이론을 이용한 유한요소법을 응력해석 방법으로 사용하며, 비선형최적화에 적합한 GINO(General Interactive Nonlinear Optimizer) 프로그램을 이용하여 구조물에 대한 전체체적을 목적함수로 하고 부재의 축력강도, 세장비, 처짐 및 국부좌굴 등으로 제약조건식을 유도하여 최적 설계를 하고자 한다.

Keywords

Acknowledgement

Supported by : 포항 종합 제철

References

  1. Modeling and Optimization with GINO Liebman, J.;Lasdon, L.S.;Schrage, L.;Waren, A.D.
  2. Proceeding of Asia-Pacific Conference on Shell and Spatical Structures An Optimum Design of Axi-symmetrically Loaded Thin Shells of Revolution Mu, Z.G.;Kang, M.M.;Kim, S.D.;Choi, M.H.
  3. Journal of Structural Engineering v.111 no.7 Optimum Design of Trusses with Buckling Constraints Cassis, J.;Sepulveda, A.
  4. The Third Asian-Pacific Conference on Computational Mechanics Optimization of Space trusses Considering Geometric Nonlinearity Sohn, S.D.;Mu, Z.G.;Kang, M.M.;Kim, S.D.;Kwun, T.J.
  5. Users Manual of MSGS Space Truss Analysis Jihong, Q.
  6. International Journal of Space Structures v.8 no.3 Efficient Optimum Design of Structures with Discrete Design Variables Salajegheh, E.;Vanderplaats, G.N.
  7. International Journal of Space Structures v.9 no.4 Minimum Weight Design of Reticular Space structures : A Computer Aided System Antonio, L.T.;Luciano, O.;Corrado, P.
  8. ACM Transactions on Mathematical Software v.4 Design and Testing of a Generalized Reduced Gradient Code for Nonlinear Programming Lasdon, L.S.;Waren, A.D.;Jain, A.;Ratner, M.
  9. 第12回 電算構造工學會 技術講習會 SPACE FRAME 構造物의 構造解析, 設計 및 施工 권택진;이병해;한상을;김승덕;정환목