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Volume 8, Number 4, October 2023 , pages 327-351 DOI: https://doi.org/10.12989/acd.2023.8.4.327 |
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Multi-objective structural optimization of spatial steel frames with column orientation and bracing system as design variables |
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Cláudio H. B. de Resende, Luiz F. Martha, Afonso C. C. Lemonge, Patricia H. Hallak, José P. G. Carvalho and Júlia C. Motta
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| Abstract | ||
| This article explores how multi-objective optimization techniques can be used to design cost-effective and structurally optimal spatial steel structures, highlighting that optimizing performance can be as important as minimizing costs in real-world engineering problems. The study includes the minimization of maximum horizontal displacement, the maximization of the first natural frequency of vibration, the maximization of the critical load factor concerning the first global buckling mode of the structure, and weight minimization as the objectives. Additionally, it outlines a systematic approach to selecting the best design by employing four different evolutionary algorithms based on differential evolution and a multi-criteria decision-making methodology. The paper's contribution lies in its comprehensive consideration of multiple conflicting objectives and its novel approach to simultaneous consideration of bracing system, column orientation, and commercial profiles as design variables. | ||
| Key Words | ||
| conceptual and feature based design; design optimization; simulation based design; steel structure; structural optimization | ||
| Address | ||
| Cláudio H. B. de Resende: Postgraduate Program of Civil and Environmental Engineering, Pontifical Catholic University of Rio de Janeiro Luiz F. Martha: Department of Civil and Environmental Engineering, Pontifical Catholic University of Rio de Janeiro Afonso C. C. Lemonge and Patricia H. Hallak: Department of Applied and Computational Mechanics - Federal University of Juiz de Fora José P. G. Carvalho: Postgraduate Program of Civil Engineering - Federal University of Rio de Janeiro Júlia C. Motta: Postgraduate Program of Civil Engineering - Federal University of Juiz de Fora | ||
