Modeling the Flexural Collapse of Thin-Walled Spirally Welded Tapered Tubes

Mahmoud, Abdullah; Torabian, Shahabeddin; Jay, A.; Mirzaie, Fariborz; Myers, Andrew C.; Smith, Eric; Schafer, Benjamin W.

doi:10.1061/(asce)st.1943-541x.0001950

Cited by 7 publications

(1 citation statement)

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“…[1][2][3], but they are limited to simpler cases, e.g., to simple boundary conditions and mostly to pure loading cases. Numerical methods are available, too; today, most of all, the finite element method (FEM) using shell elements; however, due to the curved nature of the surface to be modelled a fine discretization is necessary [4], and can lead to a large model, especially if the analyzed member is long. Moreover, customizability of commercial FEM software is limited, hence it is usually impossible to control the underlying mechanical assumptions.…”

Section: Introductionmentioning

confidence: 99%

A Fourier‐series numerical approach for the analysis of tubular members

Ádány,

Schafer

2023

ce papers

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This paper provides an efficient and robust numerical solution for the linear buckling analysis of tubular members, such as the supporting tower structures of wind turbines. The method uses Fourier‐series approximations for the displacement functions. Longitudinal discretization can optionally be applied, i.e., the member can be divided into segments. The strain‐displacement relationship directly considers the curved geometry. The implementation allows for arbitrary support conditions. Four pure loading situations are considered, uniform – in each segment – along the length: normal force, bending moment, torque, and shear force; however, they can arbitrarily be combined, as is commonly occurring in wind turbine towers. The applied methodology results in a computational advantage compared to the shell finite element method, while still maintaining much more generality and applicability compared with common analytical solutions. Furthermore, the method is supplemented with features, as spectral analysis and buckling length calculation.

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