Discrete multicriteria reliability-based optimization of spatial trusses

  • Stefan Jendo Institute of Fundamental Technological Research, Polish Academy of Science
  • Witold M. Paczkowski Technical University of Szczecin
  • Ewa Silicka Technical University of Szczecin

Abstract

The paper presents problem of discrete multicriteria optimization of two-layer regular orthogonal spatial trusses. Three criteria of evaluation are taken into account, namely: minimum of weight, maximum of reliability and maximum of stiffness of the structure. To simplify the problem, decomposition techniques are applied. The decision variables are cross-sections of the truss members. The best possible cross section is selected for each bar from a discrete catalogue. Other decision variables (coordinated variables) describe also the geometry of the structure. The multicriteria reliability-based algorithm allows for evaluating the objective functions values and then finding sets of nondominated evaluations and solutions. Reliability of the structure is expressed by the Hasofer-Lind reliability index β.

Keywords

References

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Published
Aug 18, 2022
How to Cite
JENDO, Stefan; PACZKOWSKI, Witold M.; SILICKA, Ewa. Discrete multicriteria reliability-based optimization of spatial trusses. Computer Assisted Methods in Engineering and Science, [S.l.], v. 14, n. 3, p. 485-496, aug. 2022. ISSN 2956-5839. Available at: <https://cames.ippt.gov.pl/index.php/cames/article/view/818>. Date accessed: 13 nov. 2024.
Section
Articles