Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Global instability of cold-formed steel elliptical hollow section members under combined compression and biaxial bending
https://orcid.org/0000-0003-0353-0472
https://orcid.org/0000-0002-4311-8979
Highlights Advanced FE model for CF tubular beam-columns under combined loading is presented. A parametric study on the CF steel EHS beam-column behavior under combined loading. Effects of key parameters on the column strength of CF steel EHS beam-columns. New design recommendations for CF steel EHS beam-columns under combined loading. Reliability analysis for both the current and modified Eurocode-3 design methods.
Abstract The present study numerically investigated the global instability of cold-formed (CF) steel elliptical hollow section (EHS) members under combined compression and biaxial bending. A finite element (FE) model for CF tubular members under combined compression and biaxial bending was first developed, in which the strength enhancement, geometric imperfection and residual stresses due to roll-forming were incorporated. The FE model was validated against the existing test results. The validated FE model was employed to carry out a parametric study for CF steel EHS members, which covers an extensive range of cross-section geometries, material grades (including both high strength and normal grade steels), member slenderness, loading eccentricities and loading angles. Based on the generated FE data, the application of the current interaction design formulae for steel members under combined loading in EN 1993–1-1, together with the codified slenderness limits for circular hollow section (CHS) under combined loading, were assessed for the design of CF steel EHS members under combined compression and biaxial bending. It can be found that the design formulae in EN 1993–1-1, together with the slenderness limits for CHS, can give very conservative predictions for CF steel EHS members under combined loading. In addition, the influences of different parameters, including the loading eccentricity, loading angle, loading level and the reduction factor for lateral-torsional buckling, on the member behavior were also examined. Finally, new design recommendations are proposed for the design of CF steel EHS members under combined compression and biaxial bending.
Global instability of cold-formed steel elliptical hollow section members under combined compression and biaxial bending
https://orcid.org/0000-0003-0353-0472
https://orcid.org/0000-0002-4311-8979
Highlights Advanced FE model for CF tubular beam-columns under combined loading is presented. A parametric study on the CF steel EHS beam-column behavior under combined loading. Effects of key parameters on the column strength of CF steel EHS beam-columns. New design recommendations for CF steel EHS beam-columns under combined loading. Reliability analysis for both the current and modified Eurocode-3 design methods.
Abstract The present study numerically investigated the global instability of cold-formed (CF) steel elliptical hollow section (EHS) members under combined compression and biaxial bending. A finite element (FE) model for CF tubular members under combined compression and biaxial bending was first developed, in which the strength enhancement, geometric imperfection and residual stresses due to roll-forming were incorporated. The FE model was validated against the existing test results. The validated FE model was employed to carry out a parametric study for CF steel EHS members, which covers an extensive range of cross-section geometries, material grades (including both high strength and normal grade steels), member slenderness, loading eccentricities and loading angles. Based on the generated FE data, the application of the current interaction design formulae for steel members under combined loading in EN 1993–1-1, together with the codified slenderness limits for circular hollow section (CHS) under combined loading, were assessed for the design of CF steel EHS members under combined compression and biaxial bending. It can be found that the design formulae in EN 1993–1-1, together with the slenderness limits for CHS, can give very conservative predictions for CF steel EHS members under combined loading. In addition, the influences of different parameters, including the loading eccentricity, loading angle, loading level and the reduction factor for lateral-torsional buckling, on the member behavior were also examined. Finally, new design recommendations are proposed for the design of CF steel EHS members under combined compression and biaxial bending.
Global instability of cold-formed steel elliptical hollow section members under combined compression and biaxial bending
https://orcid.org/0000-0003-0353-0472
https://orcid.org/0000-0002-4311-8979
Highlights Advanced FE model for CF tubular beam-columns under combined loading is presented. A parametric study on the CF steel EHS beam-column behavior under combined loading. Effects of key parameters on the column strength of CF steel EHS beam-columns. New design recommendations for CF steel EHS beam-columns under combined loading. Reliability analysis for both the current and modified Eurocode-3 design methods.
Abstract The present study numerically investigated the global instability of cold-formed (CF) steel elliptical hollow section (EHS) members under combined compression and biaxial bending. A finite element (FE) model for CF tubular members under combined compression and biaxial bending was first developed, in which the strength enhancement, geometric imperfection and residual stresses due to roll-forming were incorporated. The FE model was validated against the existing test results. The validated FE model was employed to carry out a parametric study for CF steel EHS members, which covers an extensive range of cross-section geometries, material grades (including both high strength and normal grade steels), member slenderness, loading eccentricities and loading angles. Based on the generated FE data, the application of the current interaction design formulae for steel members under combined loading in EN 1993–1-1, together with the codified slenderness limits for circular hollow section (CHS) under combined loading, were assessed for the design of CF steel EHS members under combined compression and biaxial bending. It can be found that the design formulae in EN 1993–1-1, together with the slenderness limits for CHS, can give very conservative predictions for CF steel EHS members under combined loading. In addition, the influences of different parameters, including the loading eccentricity, loading angle, loading level and the reduction factor for lateral-torsional buckling, on the member behavior were also examined. Finally, new design recommendations are proposed for the design of CF steel EHS members under combined compression and biaxial bending.
Global instability of cold-formed steel elliptical hollow section members under combined compression and biaxial bending
Yao, Ye (Autor:in) / Quach, Wai-Meng (Autor:in) / Young, Ben (Autor:in)
Engineering Structures ; 291
31.05.2023
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Global instability of elliptical hollow section beam-columns under compression and biaxial bending
| Springer Verlag | 2013
Buckling of elliptical hollow section members under combined compression and uniaxial bending
| Online Contents | 2013