Generalized formula of moment gradient lateral torsional buckling factor for monosymmetric steel beams
The lateral-torsional buckling (LTB) behavior of steel beams has been extensively reported. Most reports have been limited to study the doubly-symmetric beams besides a few other standard geometries. On the other hand, not so much research exists for monosymmetric steel beams, and LTB is one of the...
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| Format: | Article |
| Language: | English |
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Port Said University
2023-03-01
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| Series: | Port Said Engineering Research Journal |
| Subjects: | |
| Online Access: | https://pserj.journals.ekb.eg/article_283841_f164d332dfbad2363dff5c2dc68b9f82.pdf |
| _version_ | 1797653479255179264 |
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| author | Tarek Sharaf AMR Sayed Mohamed Elghandour Ashraf Elsabbagh |
| author_facet | Tarek Sharaf AMR Sayed Mohamed Elghandour Ashraf Elsabbagh |
| author_sort | Tarek Sharaf |
| collection | DOAJ |
| description | The lateral-torsional buckling (LTB) behavior of steel beams has been extensively reported. Most reports have been limited to study the doubly-symmetric beams besides a few other standard geometries. On the other hand, not so much research exists for monosymmetric steel beams, and LTB is one of the most critical design aspects for this type of beams. Codes allow the researchers to relate the critical moment to any in-plane loading to the standard uniform moment and members using the moment gradient factor. The moment gradient factor is an essential parameter in the design of steel cross-sections. Yet, it needs more to be applicable for cross-section shapes and boundary conditions. In this paper, a numerical model based on finite element analysis is presented, which is adopted to investigate the values of the moment gradient factor for different loading configurations. The model is developed to investigate the influence of load location with respect to the shear center of the beam section as well as the flange width ratio on the critical moment causing LTB. The numerical analysis results were validated, and new general equations for the moment gradient factor were developed to consider the effect of the different parameters. |
| first_indexed | 2024-03-11T16:44:10Z |
| format | Article |
| id | doaj.art-4a6229fd40d04c1eb7bae916231ca9ef |
| institution | Directory Open Access Journal |
| issn | 1110-6603 2536-9377 |
| language | English |
| last_indexed | 2024-03-11T16:44:10Z |
| publishDate | 2023-03-01 |
| publisher | Port Said University |
| record_format | Article |
| series | Port Said Engineering Research Journal |
| spelling | doaj.art-4a6229fd40d04c1eb7bae916231ca9ef2023-10-23T05:53:54ZengPort Said UniversityPort Said Engineering Research Journal1110-66032536-93772023-03-01271355310.21608/pserj.2023.181357.1210283841Generalized formula of moment gradient lateral torsional buckling factor for monosymmetric steel beamsTarek Sharaf0AMR Sayed1Mohamed Elghandour2Ashraf Elsabbagh3Faculty of Engineering, Port Said UniversityDepartment of civil Engineering , DomiatFaculty of Engineering, Civil Engineering Department, Port Said UniversityCivil Engineering Department,Faculty of Engineering, Port Said UniversityThe lateral-torsional buckling (LTB) behavior of steel beams has been extensively reported. Most reports have been limited to study the doubly-symmetric beams besides a few other standard geometries. On the other hand, not so much research exists for monosymmetric steel beams, and LTB is one of the most critical design aspects for this type of beams. Codes allow the researchers to relate the critical moment to any in-plane loading to the standard uniform moment and members using the moment gradient factor. The moment gradient factor is an essential parameter in the design of steel cross-sections. Yet, it needs more to be applicable for cross-section shapes and boundary conditions. In this paper, a numerical model based on finite element analysis is presented, which is adopted to investigate the values of the moment gradient factor for different loading configurations. The model is developed to investigate the influence of load location with respect to the shear center of the beam section as well as the flange width ratio on the critical moment causing LTB. The numerical analysis results were validated, and new general equations for the moment gradient factor were developed to consider the effect of the different parameters.https://pserj.journals.ekb.eg/article_283841_f164d332dfbad2363dff5c2dc68b9f82.pdfsteel beamsmoment gradient factormonosymmetric sectionsfinite elementlateral torsional buckling |
| spellingShingle | Tarek Sharaf AMR Sayed Mohamed Elghandour Ashraf Elsabbagh Generalized formula of moment gradient lateral torsional buckling factor for monosymmetric steel beams Port Said Engineering Research Journal steel beams moment gradient factor monosymmetric sections finite element lateral torsional buckling |
| title | Generalized formula of moment gradient lateral torsional buckling factor for monosymmetric steel beams |
| title_full | Generalized formula of moment gradient lateral torsional buckling factor for monosymmetric steel beams |
| title_fullStr | Generalized formula of moment gradient lateral torsional buckling factor for monosymmetric steel beams |
| title_full_unstemmed | Generalized formula of moment gradient lateral torsional buckling factor for monosymmetric steel beams |
| title_short | Generalized formula of moment gradient lateral torsional buckling factor for monosymmetric steel beams |
| title_sort | generalized formula of moment gradient lateral torsional buckling factor for monosymmetric steel beams |
| topic | steel beams moment gradient factor monosymmetric sections finite element lateral torsional buckling |
| url | https://pserj.journals.ekb.eg/article_283841_f164d332dfbad2363dff5c2dc68b9f82.pdf |
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