Investigation of the stress-strain state of beams with different types of web perforation

This article is devoted to evaluating the effectiveness of I-beams with different web perforations: hexagonal, round, oval and elliptical. The technology manufacturing castellated beams described. For purpose verification analytical calculation beam hexagonal perforation for comparison by finite element method given. To correctly assess stress-strain state, mesh elements in area openings was concentrated. results maximum normal stresses strains obtained methods were compared each other efficiency using determine state proved. In there a complex which confirmed this work most characteristic shapes openings. Beams (horizontal vertical), elliptical (rotated 45°) are considered article, their geometric parameters characteristics as well advantages disadvantages round currently widely used. addition, that affect vertical) rotated 45° identified. work, it found shape significantly affects beams, especially openings, mainly used so far. stress distribution first opening types perforations nature change σmax shown. studied method. study practical value because they can be when arranging sections beams.