Structural Engineering and Mechanics

  • 제4권4호
  • /
  • Pages.425-436
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  • 1996
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  • 1225-4568(pISSN)
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  • 1598-6217(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Application of the first-order perturbation method to optimal structural design

  • Lee, Byung Woo (Dongeui Technical Junior College) ;
  • Lim, O Kaung (Research Institute of Mechanical Technology, Pusan National University)
  • 발행 : 1996.07.25
⟨ 이전 논문 다음 논문 ⟩

초록

An application of the perturbation method to optimum structural design with random parameters is presented. It is formulated on the basis of the first-order stochastic finite element perturbation method. It also takes into full account the stress, displacement and eigenvalue constraints, together with the rates of change of the random variables. A method for calculating the sensitivity coefficients in regard to the governing equation and the first-order perturbed equation has been derived, by using a direct differentiation approach. A gradient-based nonlinear programming technique is used to solve the problem. The numerical results are specifically noted, where the stiffness parameter and external load are treated as random variables.

키워드

참고문헌

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피인용 문헌

  1. Application of Stochastic Finite Element Methods to Study the Sensitivity of ECG Forward Modeling to Organ Conductivity vol.55, pp.1, 2008, https://doi.org/10.1109/TBME.2007.900563