Numerical evaluation of flexural buckling of hot-finished and cold-formed EHS columns
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Elliptical hollow sections (EHS) have been recently introduced to the construction market. However, in the current Eurocode standard for steel structures EN 1993-1-1, there are no design criteria defined for EHS. The aim of this paper is to present a comparative numerical analysis of behaviour of cold-formed and hot-finished EHS columns exposed to flexural buckling under pure axial compression. Pin-ended columns of various slendernesses without lateral restrains and with incorporated geometrical imperfections are analysed. Material nonlinear behaviour is included through experimental tensile test results adopted from previous researches. According to obtained numerical results, similar buckling behaviour is observed for both hot-finished and cold-formed columns of higher slenderness, while in the lower slenderness region, cold-formed compressed members tend to lower buckling curves.
Keywords:
buckling curves / elliptical hollow sections / flexural buckling / numerical analysisSource:
ASES International congress proceedings / Association of Structural Engineers of Serbia, 15th Congress, September 6-8th, 2018, Zlatibor, 2018, 618-626Publisher:
- Društvo građevinskih konstruktera Srbije, Beograd
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GraFarTY - CONF AU - Jakovljević, Isidora AU - Marković, Zlatko AU - Dobrić, Jelena PY - 2018 UR - https://grafar.grf.bg.ac.rs/handle/123456789/1627 AB - Elliptical hollow sections (EHS) have been recently introduced to the construction market. However, in the current Eurocode standard for steel structures EN 1993-1-1, there are no design criteria defined for EHS. The aim of this paper is to present a comparative numerical analysis of behaviour of cold-formed and hot-finished EHS columns exposed to flexural buckling under pure axial compression. Pin-ended columns of various slendernesses without lateral restrains and with incorporated geometrical imperfections are analysed. Material nonlinear behaviour is included through experimental tensile test results adopted from previous researches. According to obtained numerical results, similar buckling behaviour is observed for both hot-finished and cold-formed columns of higher slenderness, while in the lower slenderness region, cold-formed compressed members tend to lower buckling curves. PB - Društvo građevinskih konstruktera Srbije, Beograd C3 - ASES International congress proceedings / Association of Structural Engineers of Serbia, 15th Congress, September 6-8th, 2018, Zlatibor T1 - Numerical evaluation of flexural buckling of hot-finished and cold-formed EHS columns EP - 626 SP - 618 UR - https://hdl.handle.net/21.15107/rcub_grafar_1627 ER -
@conference{ author = "Jakovljević, Isidora and Marković, Zlatko and Dobrić, Jelena", year = "2018", abstract = "Elliptical hollow sections (EHS) have been recently introduced to the construction market. However, in the current Eurocode standard for steel structures EN 1993-1-1, there are no design criteria defined for EHS. The aim of this paper is to present a comparative numerical analysis of behaviour of cold-formed and hot-finished EHS columns exposed to flexural buckling under pure axial compression. Pin-ended columns of various slendernesses without lateral restrains and with incorporated geometrical imperfections are analysed. Material nonlinear behaviour is included through experimental tensile test results adopted from previous researches. According to obtained numerical results, similar buckling behaviour is observed for both hot-finished and cold-formed columns of higher slenderness, while in the lower slenderness region, cold-formed compressed members tend to lower buckling curves.", publisher = "Društvo građevinskih konstruktera Srbije, Beograd", journal = "ASES International congress proceedings / Association of Structural Engineers of Serbia, 15th Congress, September 6-8th, 2018, Zlatibor", title = "Numerical evaluation of flexural buckling of hot-finished and cold-formed EHS columns", pages = "626-618", url = "https://hdl.handle.net/21.15107/rcub_grafar_1627" }
Jakovljević, I., Marković, Z.,& Dobrić, J.. (2018). Numerical evaluation of flexural buckling of hot-finished and cold-formed EHS columns. in ASES International congress proceedings / Association of Structural Engineers of Serbia, 15th Congress, September 6-8th, 2018, Zlatibor Društvo građevinskih konstruktera Srbije, Beograd., 618-626. https://hdl.handle.net/21.15107/rcub_grafar_1627
Jakovljević I, Marković Z, Dobrić J. Numerical evaluation of flexural buckling of hot-finished and cold-formed EHS columns. in ASES International congress proceedings / Association of Structural Engineers of Serbia, 15th Congress, September 6-8th, 2018, Zlatibor. 2018;:618-626. https://hdl.handle.net/21.15107/rcub_grafar_1627 .
Jakovljević, Isidora, Marković, Zlatko, Dobrić, Jelena, "Numerical evaluation of flexural buckling of hot-finished and cold-formed EHS columns" in ASES International congress proceedings / Association of Structural Engineers of Serbia, 15th Congress, September 6-8th, 2018, Zlatibor (2018):618-626, https://hdl.handle.net/21.15107/rcub_grafar_1627 .