Análise analítica e numérica de vigas casteladas com diferentes padrões geométricos
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Data
2018-10-22
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Universidade Federal de Goiás
Resumo
The present paper deals with the main subjects related to castellated steel beams, initially showing a brief
review of the history of emergence and use of the world, highlighting the characteristics that favored the
growth of use and the difficulties of its use. The main failure modes are characterized, highlighting the
analytical procedures available in the literature to circumvent them, in order to propose a calculation
procedure for the design. The proposed procedure is evaluated through the experimental result of four
surveys. The work also presents numerical modeling, using Finite Element Method (FEM), for beams
available in the technical literature, in order to complement the analysis of beam behavior during loading
and to verify the validity of the proposed numerical model, mainly in relation to the analysis criteria
adopted in the numerical model, such as von Mises stress distribution, isotropic hardening and tensile
stress behavior of the steel using the multilinear graph, also available in the technical literature. The
validity allows the proposed beams, with Anglo-Saxon geometry, Litzka and Peiner, to have reliability of
analysis of the model, and for the proposed loading the Anglo-Saxon beam obtained greater resistance,
mainly due to the small distance between the holes and also the lowest overall width of the aperture. The
results of the numerical models, via MEF, showed good precision when compared to the experimental
results, showing that MEF is an extremely useful tool for nonlinear analysis, provided the model is properly
calibrated. Another important result is the resistance values presented by the proposed analytical
procedure, which presents a good approximation to the actual values of the experiment and also the
resistance values obtained in the proposed numerical models, and can be adopted for the practical
dimensioning of these beams.
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Palavras-chave
Vigas casteladas, Método dos elementos finitos, Análise não-linear, Castellated beams, Finite element method, Nonlinear analysis
Citação
MELO, P. H. P. Análise analítica e numérica de vigas casteladas com diferentes padrões geométricos. 2018. 124 f. Dissertação (Mestrado em Modelagem e Otimização) - Universidade Federal de Goiás, Catalão, 2018.