Structural Engineering and Mechanics

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A fuzzy optimum design of axisymmetrically loaded thin shells of revolution

  • Kang, Moon-Myung (Department of Architectural Engineering, Kyungpook National University) ;
  • Mu, Zai-Gen (Department of Architectural Engineering, Kyungpook National University) ;
  • Kim, Seung-Deog (School of Industrial Architectural & Environmental Engineering, Semyung University) ;
  • Kwun, Taek-Jin (Department of Architectural Engineering, Sung Kyun Kwan University)
  • Published : 1999.03.25
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Abstract

This paper presents a fuzzy optimum design of axisymmetrically loaded thin shells of revolution. This paper consists of two parts, namely: an elastic analysis using the new curved element for finite element analysis developed in this study for axisymmetrically loaded thin shells of revolution, and the volume optimization on the basis of results evaluated from the elastic analysis. The curved element to meridian direction is used to develop the computer program. The results obtained from the computer program are compared by exact solution of each analytic example. The fuzzy optimizations of thin shells of revolution are done using [Model 2] which is in the form of a conventional crisp objective function and constraints with non-membership function, and nonlinear optimum GINO (General Interactive Optimizer) programming. In this paper, design examples show that the fuzzy optimum designs of the steel water tank and the steel dome roof could provide significant cost savings.

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References

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