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Performance of laterally unrestrained hybrid cellular steel beams
https://orcid.org/http://orcid.org/0009-0001-3641-354X
https://orcid.org/http://orcid.org/0000-0001-5178-8334
The performance of laterally unrestrained hybrid cellular beams failing due to lateral torsional buckling under different loading conditions is numerically investigated in this paper. Nonlinear finite element analysis is carried out on simply supported cellular beams for three different loading conditions, viz., uniform moment case, uniformly distributed load (UDL) at top flange, and UDL at shear centre, for three different material properties, viz., homogeneous high-grade cellular beam, hybrid cellular beam (Upper T-part with higher-grade steel and lower T- part with lower-grade steel), and homogeneous low-grade cellular beam to make a comparative study. This study also considers the effect of cellularity, i.e. size and spacing of openings on behaviour of cellular beams for two different possible extreme combinations of cellularity. It is observed that ultimate strength of hybrid cellular beams is enhanced significantly in comparison to that with homogeneous low-grade cellular beam. Numerically obtained results depict that ultimate strength of the hybrid cellular beams is more than the average ultimate strength of higher-grade and lower-grade homogeneous cellular beams for different considered loading conditions. The performance of hybrid cellular beams is seen to be best in case of UDL at top flange loading with 11.1% and 2.9% increase in strength for ‘best’ and ‘worst’ combinations of considered cellularity, respectively. It is concluded that performance of hybrid cellular beams is better or at par with other considered cellular beams under different loading conditions. Hence, more studies can be undertaken to explore the behaviour of hybrid cellular beams to utilise the benefits of such beams efficiently.
Performance of laterally unrestrained hybrid cellular steel beams
https://orcid.org/http://orcid.org/0009-0001-3641-354X
https://orcid.org/http://orcid.org/0000-0001-5178-8334
The performance of laterally unrestrained hybrid cellular beams failing due to lateral torsional buckling under different loading conditions is numerically investigated in this paper. Nonlinear finite element analysis is carried out on simply supported cellular beams for three different loading conditions, viz., uniform moment case, uniformly distributed load (UDL) at top flange, and UDL at shear centre, for three different material properties, viz., homogeneous high-grade cellular beam, hybrid cellular beam (Upper T-part with higher-grade steel and lower T- part with lower-grade steel), and homogeneous low-grade cellular beam to make a comparative study. This study also considers the effect of cellularity, i.e. size and spacing of openings on behaviour of cellular beams for two different possible extreme combinations of cellularity. It is observed that ultimate strength of hybrid cellular beams is enhanced significantly in comparison to that with homogeneous low-grade cellular beam. Numerically obtained results depict that ultimate strength of the hybrid cellular beams is more than the average ultimate strength of higher-grade and lower-grade homogeneous cellular beams for different considered loading conditions. The performance of hybrid cellular beams is seen to be best in case of UDL at top flange loading with 11.1% and 2.9% increase in strength for ‘best’ and ‘worst’ combinations of considered cellularity, respectively. It is concluded that performance of hybrid cellular beams is better or at par with other considered cellular beams under different loading conditions. Hence, more studies can be undertaken to explore the behaviour of hybrid cellular beams to utilise the benefits of such beams efficiently.
Performance of laterally unrestrained hybrid cellular steel beams
https://orcid.org/http://orcid.org/0009-0001-3641-354X
https://orcid.org/http://orcid.org/0000-0001-5178-8334
The performance of laterally unrestrained hybrid cellular beams failing due to lateral torsional buckling under different loading conditions is numerically investigated in this paper. Nonlinear finite element analysis is carried out on simply supported cellular beams for three different loading conditions, viz., uniform moment case, uniformly distributed load (UDL) at top flange, and UDL at shear centre, for three different material properties, viz., homogeneous high-grade cellular beam, hybrid cellular beam (Upper T-part with higher-grade steel and lower T- part with lower-grade steel), and homogeneous low-grade cellular beam to make a comparative study. This study also considers the effect of cellularity, i.e. size and spacing of openings on behaviour of cellular beams for two different possible extreme combinations of cellularity. It is observed that ultimate strength of hybrid cellular beams is enhanced significantly in comparison to that with homogeneous low-grade cellular beam. Numerically obtained results depict that ultimate strength of the hybrid cellular beams is more than the average ultimate strength of higher-grade and lower-grade homogeneous cellular beams for different considered loading conditions. The performance of hybrid cellular beams is seen to be best in case of UDL at top flange loading with 11.1% and 2.9% increase in strength for ‘best’ and ‘worst’ combinations of considered cellularity, respectively. It is concluded that performance of hybrid cellular beams is better or at par with other considered cellular beams under different loading conditions. Hence, more studies can be undertaken to explore the behaviour of hybrid cellular beams to utilise the benefits of such beams efficiently.
Performance of laterally unrestrained hybrid cellular steel beams
Asian J Civ Eng
Desai, Ruturaj B. (author) / Khatri, Ashish P. (author)
Asian Journal of Civil Engineering ; 24 ; 2755-2765
2023-12-01
11 pages
Article (Journal)
Electronic Resource
English
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