Abstract
This paper presents a new and general approach for the calculation of cross-section deformation modes in thin-walled beams, to be used in the framework of generalized beam theory (GBT). The proposed approach subdivides and hierarchizes the cross-section deformation modes by employing several kinematic hypotheses. This makes it possible to discard a priori specific types of deformation modes and consequently reduce the number of cross-section degrees-of-freedom. The approach is applicable to arbitrary (with open and closed parts) polygonal cross-sections with external and internal constraints and allows for the a posteriori inclusion of particular deformation modes (e.g., shear deformation modes in a part of the cross-section). Although only GBT applications are dealt with, the deformation modes obtained may be straightforwardly incorporated in other thin-walled beam formulations that include cross-section deformation.
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Gonçalves, R., Ritto-Corrêa, M. & Camotim, D. A new approach to the calculation of cross-section deformation modes in the framework of generalized beam theory. Comput Mech 46, 759–781 (2010). https://doi.org/10.1007/s00466-010-0512-2
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DOI: https://doi.org/10.1007/s00466-010-0512-2