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Non-linear finite element analysis of SFRC beam-column joints under cyclic loading: enhancing ductility and structural integrity.

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Title: Non-linear finite element analysis of SFRC beam-column joints under cyclic loading: enhancing ductility and structural integrity.
Authors: Noor, Umar Ahmad1 (AUTHOR), Jadoon, Muneeb Ahmed1 (AUTHOR), Onyelowe, Kennedy2,3 (AUTHOR) kennedychibuzor@kiu.ac.ug, Shehzad, Asif1 (AUTHOR), Ghaedi, Khaled4,5 (AUTHOR), Alabduljabbar, Hisham6 (AUTHOR), Javed, Muhammad Faisal7,8 (AUTHOR) arbabfaisal@cuiatd.edu.pk
Source: Scientific Reports. 8/5/2024, Vol. 14 Issue 1, p1-31. 31p.
Subject Terms: *FIBER-reinforced concrete, *BEAM-column joints, *CYCLIC loads, *FINITE element method, *IMPACT loads
Abstract: Brittle shear failure of beam-column joints, especially during seismic events poses a significant threat to structural integrity. This study investigates the potential of steel fiber reinforced concrete (SFRC) in the joint core to enhance ductility and overcome construction challenges associated with traditional reinforcement. A non-linear finite element analysis (NLFEA) using ABAQUS software was conducted to simulate the behavior of SFRC beam-column joints subjected to cyclic loading. Ten simulated specimens were analyzed to discern the impact of varying steel fiber volume fraction and aspect ratio on joint performance. Key findings reveal that a 2% volume fraction of steel fibers in the joint core significantly improves post-cracking behavior by promoting ductile shear failure, thereby increasing joint toughness. While aspect ratio variations showed minimal impact on load capacity, long and thin steel fibers effectively bridge cracks, delaying their propagation. Furthermore, increasing steel fiber content resulted in higher peak-to-peak stiffness. This research suggests that strategically incorporating SFRC in the joint core can promote ductile shear failure, enhance joint toughness, and reduce construction complexities by eliminating the need for congested hoops. Overall, the developed NLFEA model proves to be a valuable tool for investigating design parameters in SFRC beam-column joints under cyclic loading. [ABSTRACT FROM AUTHOR]
Copyright of Scientific Reports is the property of Springer Nature and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: Non-linear finite element analysis of SFRC beam-column joints under cyclic loading: enhancing ductility and structural integrity.
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  Data: <searchLink fieldCode="AR" term="%22Noor%2C+Umar+Ahmad%22">Noor, Umar Ahmad</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Jadoon%2C+Muneeb+Ahmed%22">Jadoon, Muneeb Ahmed</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Onyelowe%2C+Kennedy%22">Onyelowe, Kennedy</searchLink><relatesTo>2,3</relatesTo> (AUTHOR)<i> kennedychibuzor@kiu.ac.ug</i><br /><searchLink fieldCode="AR" term="%22Shehzad%2C+Asif%22">Shehzad, Asif</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Ghaedi%2C+Khaled%22">Ghaedi, Khaled</searchLink><relatesTo>4,5</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Alabduljabbar%2C+Hisham%22">Alabduljabbar, Hisham</searchLink><relatesTo>6</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Javed%2C+Muhammad+Faisal%22">Javed, Muhammad Faisal</searchLink><relatesTo>7,8</relatesTo> (AUTHOR)<i> arbabfaisal@cuiatd.edu.pk</i>
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  Data: *<searchLink fieldCode="DE" term="%22FIBER-reinforced+concrete%22">FIBER-reinforced concrete</searchLink><br />*<searchLink fieldCode="DE" term="%22BEAM-column+joints%22">BEAM-column joints</searchLink><br />*<searchLink fieldCode="DE" term="%22CYCLIC+loads%22">CYCLIC loads</searchLink><br />*<searchLink fieldCode="DE" term="%22FINITE+element+method%22">FINITE element method</searchLink><br />*<searchLink fieldCode="DE" term="%22IMPACT+loads%22">IMPACT loads</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Brittle shear failure of beam-column joints, especially during seismic events poses a significant threat to structural integrity. This study investigates the potential of steel fiber reinforced concrete (SFRC) in the joint core to enhance ductility and overcome construction challenges associated with traditional reinforcement. A non-linear finite element analysis (NLFEA) using ABAQUS software was conducted to simulate the behavior of SFRC beam-column joints subjected to cyclic loading. Ten simulated specimens were analyzed to discern the impact of varying steel fiber volume fraction and aspect ratio on joint performance. Key findings reveal that a 2% volume fraction of steel fibers in the joint core significantly improves post-cracking behavior by promoting ductile shear failure, thereby increasing joint toughness. While aspect ratio variations showed minimal impact on load capacity, long and thin steel fibers effectively bridge cracks, delaying their propagation. Furthermore, increasing steel fiber content resulted in higher peak-to-peak stiffness. This research suggests that strategically incorporating SFRC in the joint core can promote ductile shear failure, enhance joint toughness, and reduce construction complexities by eliminating the need for congested hoops. Overall, the developed NLFEA model proves to be a valuable tool for investigating design parameters in SFRC beam-column joints under cyclic loading. [ABSTRACT FROM AUTHOR]
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  Data: <i>Copyright of Scientific Reports is the property of Springer Nature and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1038/s41598-024-69270-1
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        Text: English
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        Type: general
      – SubjectFull: BEAM-column joints
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              Text: 8/5/2024
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