A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Press-braked ferritic stainless steel slender channel section beam–columns: Tests, simulations and design
https://orcid.org/0000-0002-3603-112X
https://orcid.org/0000-0003-2941-0970
Abstract This paper reports an experimental and numerical investigation into the buckling behaviour and resistance of press-braked ferritic stainless steel slender channel section beam–columns under combined compression and minor-axis bending moment. An experimental programme was firstly performed, including material coupon tests, initial global and local geometric imperfection measurements and ten beam–column tests. The experimental programme was followed by a numerical modelling programme, where finite element models were developed and validated against the experimental results and then adopted to conduct parametric studies to generate additional numerical data. Based on the obtained test and numerical data, the existing design interaction curves, as set out in the European code, American specification and Australian/New Zealand standard, were evaluated and found to result in conservative and scattered resistance predictions. An improved design interaction curve, anchored to more accurate end points and featuring more appropriate shape, was then developed and shown to offer more accurate and consistent resistance predictions for press-braked ferritic stainless steel slender channel section beam–columns over the codified design interaction curves. Statistical analyses were also performed to confirm the reliability of the new proposal.
Highlights The behaviour of press-braked ferritic stainless steel slender channel section beam–columns was studied. Ten beam–column tests were conducted. FE models were developed to validate against the test results and then used to conduct parametric studies. The codified design interaction curves were evaluated, revealing conservatism. A new improved design interaction curve was developed.
Press-braked ferritic stainless steel slender channel section beam–columns: Tests, simulations and design
https://orcid.org/0000-0002-3603-112X
https://orcid.org/0000-0003-2941-0970
Abstract This paper reports an experimental and numerical investigation into the buckling behaviour and resistance of press-braked ferritic stainless steel slender channel section beam–columns under combined compression and minor-axis bending moment. An experimental programme was firstly performed, including material coupon tests, initial global and local geometric imperfection measurements and ten beam–column tests. The experimental programme was followed by a numerical modelling programme, where finite element models were developed and validated against the experimental results and then adopted to conduct parametric studies to generate additional numerical data. Based on the obtained test and numerical data, the existing design interaction curves, as set out in the European code, American specification and Australian/New Zealand standard, were evaluated and found to result in conservative and scattered resistance predictions. An improved design interaction curve, anchored to more accurate end points and featuring more appropriate shape, was then developed and shown to offer more accurate and consistent resistance predictions for press-braked ferritic stainless steel slender channel section beam–columns over the codified design interaction curves. Statistical analyses were also performed to confirm the reliability of the new proposal.
Highlights The behaviour of press-braked ferritic stainless steel slender channel section beam–columns was studied. Ten beam–column tests were conducted. FE models were developed to validate against the test results and then used to conduct parametric studies. The codified design interaction curves were evaluated, revealing conservatism. A new improved design interaction curve was developed.
Press-braked ferritic stainless steel slender channel section beam–columns: Tests, simulations and design
https://orcid.org/0000-0002-3603-112X
https://orcid.org/0000-0003-2941-0970
Abstract This paper reports an experimental and numerical investigation into the buckling behaviour and resistance of press-braked ferritic stainless steel slender channel section beam–columns under combined compression and minor-axis bending moment. An experimental programme was firstly performed, including material coupon tests, initial global and local geometric imperfection measurements and ten beam–column tests. The experimental programme was followed by a numerical modelling programme, where finite element models were developed and validated against the experimental results and then adopted to conduct parametric studies to generate additional numerical data. Based on the obtained test and numerical data, the existing design interaction curves, as set out in the European code, American specification and Australian/New Zealand standard, were evaluated and found to result in conservative and scattered resistance predictions. An improved design interaction curve, anchored to more accurate end points and featuring more appropriate shape, was then developed and shown to offer more accurate and consistent resistance predictions for press-braked ferritic stainless steel slender channel section beam–columns over the codified design interaction curves. Statistical analyses were also performed to confirm the reliability of the new proposal.
Highlights The behaviour of press-braked ferritic stainless steel slender channel section beam–columns was studied. Ten beam–column tests were conducted. FE models were developed to validate against the test results and then used to conduct parametric studies. The codified design interaction curves were evaluated, revealing conservatism. A new improved design interaction curve was developed.
Press-braked ferritic stainless steel slender channel section beam–columns: Tests, simulations and design
Thin-Walled Structures ; 183
2022-10-20
Article (Journal)
Electronic Resource
English