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Title: | Optimization of rigidly supported guyed masts |
Authors: | Belevičius, Rimantas Jatulis, Donatas Rusakevičius, Dainius Mačiūnas, Darius |
Keywords: | global optimization evolutionary algorithm inite element method telecommunication guyed mast topology optimization shape optimization sizing optimization |
Issue Date: | 2017 |
Publisher: | Hindawi Ltd |
Citation: | Belevicius R., Jatulis D., Rusakevicius D., Maciunas D. 2017. Optimization of Rigidly Supported Guyed Masts, ADVANCES IN CIVIL ENGINEERING. |
Series/Report no.: | 2017;4561376 |
Abstract: | A technique for simultaneous topology, shape, and sizing optimization of tall guyed masts is presented in this paper. The typical
scheme of telecommunication masts that are triangular in plan and supported by a certain number of guys’ levels is examined. The
objective function is the total mass of the mast, including the mass of the guys. The mast structure is optimized for self-weight
and wind loading that is evaluated according to Eurocodes. The nonlinear behaviour of the guyed mast is simplified idealizing
the nonlinear guys as approximate boundary conditions for the mast. A comparison of the simplified solution with the results
of nonlinear analysis with Ansys shows small discrepancies that are on the safe side. The constraints involve all strength, local
and global stability, and slenderness requirements. The optimization problem is solved using evolutionary algorithm with original
genome repair procedure. As an example, a typical 96 m guyed broadcasting antenna for mobile-phone networks was designed
employing the proposed optimization technique and taking up to 10 guys’ levels. It is shown that the optimal mast is supported by
3–5 guys’ levels. The optimal ranges of all remaining design variables were also obtained. |
URI: | http://dspace.vgtu.lt/handle/1/3820 |
ISSN: | 1687-8086 |
Appears in Collections: | Moksliniai straipsniai / Research articles
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