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Behaviour, finite element modelling and design of cruciform section steel columns
https://orcid.org/0000-0003-0126-6807
Abstract A study into the mechanical behaviour and design of steel equal-leg cruciform section members subjected to axial compression is presented. Experimental data from the literature are used to validate shell finite element models developed within the commercial package ABAQUS for their load-deformation and ultimate behaviour. A numerical parametric study then considers cruciform section columns with a wide range of slenderness ratios and various common boundary conditions. The mechanical response and load-carrying capacity are shown to be dependent not only on the column slenderness but also on the torsional to flexural elastic buckling load ratio. Finally, a recently established design approach for steel angle section columns is extended to include cruciform section members, and verified against the available results. It is found through reliability analysis based on the EN 1990 procedure that the new proposal also offers substantially improved accuracy and consistency in strength predictions compared to the existing codified design rules for cruciform section columns; a recommended partial safety factor of 1.0 is determined.
Highlights Critical buckling behaviour of cruciform sections under compression described. Shell FE models of cruciform columns developed in ABAQUS and validated against test results. Numerical parametric study considering a range of steel cruciform section columns described. Experimental and numerical results are used to develop a new design approach. Accuracy and reliability of the new design approach is verified in accordance with EN 1990.
Behaviour, finite element modelling and design of cruciform section steel columns
https://orcid.org/0000-0003-0126-6807
Abstract A study into the mechanical behaviour and design of steel equal-leg cruciform section members subjected to axial compression is presented. Experimental data from the literature are used to validate shell finite element models developed within the commercial package ABAQUS for their load-deformation and ultimate behaviour. A numerical parametric study then considers cruciform section columns with a wide range of slenderness ratios and various common boundary conditions. The mechanical response and load-carrying capacity are shown to be dependent not only on the column slenderness but also on the torsional to flexural elastic buckling load ratio. Finally, a recently established design approach for steel angle section columns is extended to include cruciform section members, and verified against the available results. It is found through reliability analysis based on the EN 1990 procedure that the new proposal also offers substantially improved accuracy and consistency in strength predictions compared to the existing codified design rules for cruciform section columns; a recommended partial safety factor of 1.0 is determined.
Highlights Critical buckling behaviour of cruciform sections under compression described. Shell FE models of cruciform columns developed in ABAQUS and validated against test results. Numerical parametric study considering a range of steel cruciform section columns described. Experimental and numerical results are used to develop a new design approach. Accuracy and reliability of the new design approach is verified in accordance with EN 1990.
Behaviour, finite element modelling and design of cruciform section steel columns
https://orcid.org/0000-0003-0126-6807
Abstract A study into the mechanical behaviour and design of steel equal-leg cruciform section members subjected to axial compression is presented. Experimental data from the literature are used to validate shell finite element models developed within the commercial package ABAQUS for their load-deformation and ultimate behaviour. A numerical parametric study then considers cruciform section columns with a wide range of slenderness ratios and various common boundary conditions. The mechanical response and load-carrying capacity are shown to be dependent not only on the column slenderness but also on the torsional to flexural elastic buckling load ratio. Finally, a recently established design approach for steel angle section columns is extended to include cruciform section members, and verified against the available results. It is found through reliability analysis based on the EN 1990 procedure that the new proposal also offers substantially improved accuracy and consistency in strength predictions compared to the existing codified design rules for cruciform section columns; a recommended partial safety factor of 1.0 is determined.
Highlights Critical buckling behaviour of cruciform sections under compression described. Shell FE models of cruciform columns developed in ABAQUS and validated against test results. Numerical parametric study considering a range of steel cruciform section columns described. Experimental and numerical results are used to develop a new design approach. Accuracy and reliability of the new design approach is verified in accordance with EN 1990.
Behaviour, finite element modelling and design of cruciform section steel columns
Behzadi-Sofiani, Behnam (author) / Gardner, Leroy (author) / Wadee, M. Ahmer (author)
Thin-Walled Structures ; 182
2022-09-05
Article (Journal)
Electronic Resource
English
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