A polyoptimal catalogue of rolled profiles for a given class of spatial trusses
Abstract
The purpose of this polyoptimization was to find optimal tubular cross section catalogues for the specified spatial trusses. Five different spans of trusses have been analyzed, starting from 24 x 24 m ending at 72 x 72 m, trusses supported at every other perimeter node, with loading conditions typical for roofs. Four decision variables were taken under consideration, i.e. the catalogue size t, its arrangement T in a metallurgical catalogue TM, minimal and maximal diameters of tubular elements Dmin and Dmax. Two objective functions: truss mass and manufacturability of particular solutions were evaluated. For that purpose, some design, technological, and computational constraints were taken into account. For the specified spans L, different catalogues of cross sections were defined by TOPSIS method.
Keywords
References
[1] W. Bogucki, M. Żyburtowicz. Tables for design of metallic structures (in Polish). Arkady, Warszawa, 1996.[2] J. Bródka, A. Czechowski, A. Grudka, J. Karczewski, J. Kordjak, Z. Kowal, M. Kwaśniewski, M. Łubiński. Spatial truss structures (in Polish) . Arkady, Warszawa, 1985.
[3] W. Gutkowski. Regular Bar Structures (in Polish). PWN, Warszawa, 1973.
[4] W. Gutkowski, J. Zawidzka. Sequential algorithm for discrete minimum weight design of structures. In: W. Gutkowski, Z. Mróz, eds., WCMSO-2 Second World Congress of Structural and Multidisciplinary Optimization, May 26- 30, 1997, Zakopane, IFTR PAS, 1: 313 318. Wydawnictwo Ekoinżynieria, Lublin, 1997.
[5] E. J. Haug, J. S. Arora. Applied optimal design; mechanical and structural systems. John Wiley and Sons, New York, 1979.
This work is licensed under a Creative Commons Attribution 4.0 International License.
