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Structural Engineering and Mechanics Volume 7, Number 3, March 1999 , pages 277-288 DOI: https://doi.org/10.12989/sem.1999.7.3.277 |
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A fuzzy optimum design of axisymmetrically loaded thin shells of revolution |
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Kang MM, Mu ZG, Kim SD, Kwun TJ
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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. | ||
| Key Words | ||
| fuzzy optimum design, thin shells of revolution, curved shell element, flat shell element, shape function, objective function, fuzzy constraints, membership function, non-membership function | ||
| Address | ||
| Kang MM, Kyungpook Natl Univ, Dept Architectural Engn, Taegu 702701, South Korea Kyungpook Natl Univ, Dept Architectural Engn, Taegu 702701, South Korea Semyung Univ, Sch Ind Architectural & Environm Engn, Jaecheon 390230, South Korea Sung Kyun Kwan Univ, Dept Architectural Engn, Suwon 440746, South Korea | ||