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The article examines an algorithm used for processing the results of laboratory tests when experimental data was obtained in the aerodynamic tunnel. The paper deals with information when data about pressure distribution on the surfaces of a designed building are recalculated into wind loads required for calculating a virtual model for the finite element method. Due to differences in methodology between experimental airflow testing in the aerodynamic tunnel and the simulation of wind loads for a complex facility referring to the finite element method, the proposed investigations are actual while taking into account the current design codes and climatology conditions for an individual site. A review of similar problems, design conditions, the principles of the conducted experiment, a concept of the algorithm, basic assumptions and some results are briefly described in the paper. The final conclusions and recommendations can help with choosing the right solution during such calculations. [ABSTRACT FROM AUTHOR]

In this paper, a technology enabling the optimization of the topology of truss or frame structures with genetic algorithms is presented. It has been shown that due to a huge number of possible variants the global solution of similar problems with exhaustive search algorithms is feasible only for systems possessing small numbers of d.o.f. s (usually until 10 nodes). These problems can be solved in a reasonable time by genetic algorithms. The modified genetic algorithm for optimization of topology of truss systems is suggested, where the repair of the genotype, instead of some constraint is used. The solution of numerical examples with original software illustrates the efficiency of proposed technology; the global solutions are obtained in all cases. [ABSTRACT FROM AUTHOR]

There are many methods to calculate castellated steel beams; however, neither of these methods determines the rational cross-section selection. Selecting the rational cross-section induces a significant reduction in the quantity of steel. A new algorithm for selecting the rational dimensions of the castellated beams is presented in this paper. In future works it may be adopted and used for design. 12 m long beams, web thickness 6-12 mm and web depth 500-1000 mm are analysed in this paper. Opening size used varies from half of the web depth to the total web depth minus 100 mm. The chosen cross-sectional area of two flanges is equal to the cross-sectional area of the web. The thickness of the flanges is twice as big as the thickness of the web. The finite element method was used for geometrical and physical non-linear analysis of the castellated beams under a uniformly distributed load. The upper flanges of the beams are restrained out of the plane. The results are presented in relevant charts. [ABSTRACT FROM AUTHOR]