Interactive methodology for reliability-based structural design and optimization

  • Rafał Stocki Institute of Fundamental Technological Research Polish Academy of Sciences
  • Andrzej Siemaszko Institute of Fundamental Technological Research Polish Academy of Sciences
  • Michał Kleiber Institute of Fundamental Technological Research Polish Academy of Sciences

Abstract

Recent advances in reliability methods, optimization as well as design sensitivity analysis have resulted in development of computational systems supporting RBDO processes for medium/large structures. For RBDO the efficiency problems are critical and in order to get the optimum design a number of fast approximate methods have been recently proposed. These methods, tested for rather small problems, show acceptable accuracy and speed up computations considerably. However, when applied in the automated way to medium/large scale problems they may cause severe convergence problems or lead to a poor local minimum after expensive computations. Instead of an automated optimization procedure, an interactive approach is proposed. Implemented in the POLSAP-RBO system it allows to combine effective interactive design methods with visual capabilities to efficiently generate optimum design. Benchmark studies of an offshore jacket structure show efficiency of the interactive approach which employs integration, approximation and reduction techniques for maximizing efficiency of RBDO.

Keywords

References

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Published
May 26, 2023
How to Cite
STOCKI, Rafał; SIEMASZKO, Andrzej; KLEIBER, Michał. Interactive methodology for reliability-based structural design and optimization. Computer Assisted Methods in Engineering and Science, [S.l.], v. 6, n. 1, p. 39-62, may 2023. ISSN 2956-5839. Available at: <https://cames.ippt.gov.pl/index.php/cames/article/view/1325>. Date accessed: 13 nov. 2024.
Section
Articles