Structural Engineering and Mechanics

  • 제3권4호
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  • Pages.359-372
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  • 1995
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  • 1225-4568(pISSN)
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  • 1598-6217(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

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Approximate discrete variable optimization of plate structures using dual methods

  • 발행 : 1995.07.25
⟨ 이전 논문 다음 논문 ⟩

초록

This study presents an efficient method for optimum design of plate and shell structures, when the design variables are continuous or discrete. Both sizing and shape design variables are considered. First the structural responses such as element forces are approximated in terms of some intermediate variables. By substituting these approximate relations into the original design problem, an explicit nonlinear approximate design task with high quality approximation is achieved. This problem with continuous variables, can be solved by means of numerical optimization techniques very efficiently, the results of which are then used for discrete variable optimization. Now, the approximate problem is converted into a sequence of second level approximation problems of separable form and each of which is solved by a dual strategy with discrete design variables. The approach is efficient in terms of the number of required structural analyses, as well as the overall computational cost of optimization. Examples are offered and compared with other methods to demonstrate the features of the proposed method.

키워드

참고문헌

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피인용 문헌

  1. Structural optimization using response approximation and optimality criteria methods vol.19, pp.7, 1997, https://doi.org/10.1016/S0141-0296(96)00118-6
  2. Optimum design of plate structures using three-point approximation vol.13, pp.2-3, 1997, https://doi.org/10.1007/BF01199233
  3. DISCRETE VARIABLE OPTIMIZATION OF PLATE STRUCTURES USING PENALTY APPROACHES AND APPROXIMATION CONCEPTS vol.26, pp.3, 1996, https://doi.org/10.1080/03052159608941118