Reliability-based topology optimization for frame structures considering multiple performance criteria using slsv method with improvement of convergence property

Nozomu Kogiso, Yutaka Hirano, Shinji Nishiwaki, Kazuhiro Izui, Masataka Yoshimura, Seungjae Min

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Abstract

This research applies SLSV (Single-Loop-Single Variable) method to reliability-based topology optimization (RBTO) for frame structures to improve computational efficiency. The design problem is formulated to minimize the structural volume of frame structure in terms of crosssectional area of each frame element under the two reliability constraints. The two mode reliability criteria consist of the mean compliance and mean eifenfrequency criterion under variations on applied loads and nonstructural mass. Through numerical examples, higher computational efficiency and accuracy of reliability approximation by the SLSV method are demonstrated in comparison with those by the conventional double loop method that mode reliabilities are evaluated by the first order reliability method (FORM). Additionally, the importance of normalization of the limit state functions that are directly applied as constraint conditions in the SLSV method is also demonstrated.

Original languageEnglish
Pages (from-to)719-726
Number of pages8
JournalNihon Kikai Gakkai Ronbunshu, C Hen/Transactions of the Japan Society of Mechanical Engineers, Part C
Volume75
Issue number751
DOIs
Publication statusPublished - 2009 Mar

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Keywords

  • First order reliability method
  • Frame structures
  • Ground structure approach
  • Reliability-based topology optimization
  • SLSV method

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