Structural Engineering and Mechanics

  • 제44권3호
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  • Pages.379-403
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  • 2012
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  • 1225-4568(pISSN)
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  • 1598-6217(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Time-history analysis based optimal design of space trusses: the CMA evolution strategy approach using GRNN and WA

  • Kaveh, A. (Centre of Excellence for Fundamental Studies in Structural Engineering, Iran University of Science and Technology) ;
  • Fahimi-Farzam, M. (Centre of Excellence for Fundamental Studies in Structural Engineering, Iran University of Science and Technology) ;
  • Kalateh-Ahani, M. (Centre of Excellence for Fundamental Studies in Structural Engineering, Iran University of Science and Technology)
  • 투고 : 2012.04.27
  • 심사 : 2012.10.24
  • 발행 : 2012.11.10
⟨ 이전 논문 다음 논문 ⟩

초록

In recent years, the need for optimal design of structures under time-history loading aroused great attention in researchers. The main problem in this field is the extremely high computational demand of time-history analyses, which may convert the solution algorithm to an illogical one. In this paper, a new framework is developed to solve the size optimization problem of steel truss structures subjected to ground motions. In order to solve this problem, the covariance matrix adaptation evolution strategy algorithm is employed for the optimization procedure, while a generalized regression neural network is utilized as a meta-model for fitness approximation. Moreover, the computational cost of time-history analysis is decreased through a wavelet analysis. Capability and efficiency of the proposed framework is investigated via two design examples, comprising of a tower truss and a footbridge truss.

키워드

참고문헌

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  6. Reliability Analysis of Quick Sand Condition vol.34, pp.2, 2016, https://doi.org/10.1007/s10706-015-9967-4
  7. System-reliability-based design and topology optimization of structures under constraints on first-passage probability vol.76, pp.None, 2012, https://doi.org/10.1016/j.strusafe.2018.06.006