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MINLP approach to the optimization of steel framesKlanšek, Uroš ; Žula, Tomaž ; Kravanja, StojanThe paper presents the discrete dimension optimization of unbraced rigid steel plane frames. The optimization of frames is performed using Mixed-Integer Non-linear Programming approach, MINLP. Since ... the MINLP denotes a combined discrete-continuous optimization technique, it performs the discrete optimization of discrete dimensions simultaneously with the continuous optimization of continuous parameters. The Modified Outer-Approximation/Equality-Relaxation algorithm is applied to execute the optimization. A two-phase MINLP optimization is proposed to start with the continuous optimization of the frame shape, while standard dimensions are relaxed temporary into continuous parameters. When the optimal shape is found, standard sizes of crosssections are re-established and the simultaneous shape and discrete dimension optimization is then continued until the optimal solution is found. The finite element equations are defined as the equality constraints for the secondorder elastic structural analysis. Design constraints for steel members are formulated accordingly to Eurocode 3. Besides the theoretical basis, an example of the optimization of a steel frame is presented at the end of the paper.Source: Progress in steel, composite and aluminium structures : proceedings of the 11th International conference on metal structures (ICMS-2006), Rzeszów, Poland, 21-23 june 2006 [Elektronski vir] (Str. 807-812)Type of material - conference contributionPublish date - 2006Language - englishCOBISS.SI-ID - 10522646
Author
Klanšek, Uroš |
Žula, Tomaž |
Kravanja, Stojan
Topics
jekleni okvirji |
optimiranje standardnih dimenzij |
mešano celoštevilsko nelinearno programiranje |
modificirani algoritem zunanje aproksimacije s sprostitvijo enačb |
steel plane frames |
mixed-integer non-linear programming |
modified outer-approximation/equality-relaxation
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Database name | Field | Year |
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Links to authors' personal bibliographies | Links to information on researchers in the SICRIS system |
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Klanšek, Uroš | 22433 |
Žula, Tomaž | 25570 |
Kravanja, Stojan | 07599 |
Source: Personal bibliographies
and: SICRIS
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