Local stiffeners affect the behaviour of thin-walled beams (TWBs). An in-house code based on a one-dimensional model proved effective in several instances of compressive buckling of TWBs but gave counterintuitive results for locally stiffened TWBs. To clarify the matter, we investigated TWBs with multi-symmetric double I cross-section, widely used in practical applications where high bending stiffness is required. Several samples were manufactured and stiffened on purpose, closing them over a small portion of the axis at different places. The samples were tested with end constraints accounting for various warping conditions. The experimental and numerical outputs from a commercial FEM code gave a key to overcome the unexpected results by the in-house code, paving the way for further studies.
Effect of local stiffeners and warping constraints on the buckling of symmetric open thin-walled beams with high warping stiffness / Piana, G.; Lofrano, E.; Carpinteri, A.; Ruta, G.. - In: MECCANICA. - ISSN 0025-6455. - STAMPA. - 56:8(2021), pp. 2083-2102. [10.1007/s11012-021-01349-9]
|Titolo:||Effect of local stiffeners and warping constraints on the buckling of symmetric open thin-walled beams with high warping stiffness|
|Data di pubblicazione:||2021|
|Digital Object Identifier (DOI):||http://dx.doi.org/10.1007/s11012-021-01349-9|
|Appare nelle tipologie:||1.1 Articolo in rivista|
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