Buckling analysis of I-beams using finite element analysis
I-beams are steel structures that are widely used in the construction and civil engineering industry and are available in a variety of standard sizes. Due to its I-shaped section, it is able to efficiently bear both bending and shear loads in the plane of the web. However, as a result of its cross-s...
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2020
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sg-ntu-dr.10356-1411122023-03-04T18:58:18Z Buckling analysis of I-beams using finite element analysis Ng, Gimson Jun Shun Sellakkutti Rajendran School of Mechanical and Aerospace Engineering MSRajendran@ntu.edu.sg Engineering::Mechanical engineering I-beams are steel structures that are widely used in the construction and civil engineering industry and are available in a variety of standard sizes. Due to its I-shaped section, it is able to efficiently bear both bending and shear loads in the plane of the web. However, as a result of its cross-section being an open section, it is inefficient in carrying torsion loads. This results in lateral torsional buckling being one of the failure modes for the I-beam. This study aims to conduct buckling analysis on a specific I-beam for different load cases and document the buckling load multiplier and buckling mode shapes. In addition, an algorithm would be developed to automate the buckling analysis for the I-beam as its length is varied from a short beam to a long beam, and the buckling load multiplier recorded. From the data collected, one could determine the buckling safety factor of the I-beam for a given length and applied load, such that static stress safety factor = 3. Furthermore, the results were compared to theoretical and semi-empirical formulas to determine the extent of deviation between methods. Lastly, the minimum web thickness of the chosen I-beam was obtained for different lengths of the I-beam through a similar automation of the buckling analysis, such that both static stress safety factor = buckling safety factor = 3. Bachelor of Engineering (Mechanical Engineering) 2020-06-04T03:42:06Z 2020-06-04T03:42:06Z 2020 Final Year Project (FYP) https://hdl.handle.net/10356/141112 en B212 application/pdf Nanyang Technological University |
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Engineering::Mechanical engineering Ng, Gimson Jun Shun Buckling analysis of I-beams using finite element analysis |
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I-beams are steel structures that are widely used in the construction and civil engineering industry and are available in a variety of standard sizes. Due to its I-shaped section, it is able to efficiently bear both bending and shear loads in the plane of the web. However, as a result of its cross-section being an open section, it is inefficient in carrying torsion loads. This results in lateral torsional buckling being one of the failure modes for the I-beam. This study aims to conduct buckling analysis on a specific I-beam for different load cases and document the buckling load multiplier and buckling mode shapes. In addition, an algorithm would be developed to automate the buckling analysis for the I-beam as its length is varied from a short beam to a long beam, and the buckling load multiplier recorded. From the data collected, one could determine the buckling safety factor of the I-beam for a given length and applied load, such that static stress safety factor = 3. Furthermore, the results were compared to theoretical and semi-empirical formulas to determine the extent of deviation between methods. Lastly, the minimum web thickness of the chosen I-beam was obtained for different lengths of the I-beam through a similar automation of the buckling analysis, such that both static stress safety factor = buckling safety factor = 3. |
author2 |
Sellakkutti Rajendran |
author_facet |
Sellakkutti Rajendran Ng, Gimson Jun Shun |
format |
Final Year Project |
author |
Ng, Gimson Jun Shun |
author_sort |
Ng, Gimson Jun Shun |
title |
Buckling analysis of I-beams using finite element analysis |
title_short |
Buckling analysis of I-beams using finite element analysis |
title_full |
Buckling analysis of I-beams using finite element analysis |
title_fullStr |
Buckling analysis of I-beams using finite element analysis |
title_full_unstemmed |
Buckling analysis of I-beams using finite element analysis |
title_sort |
buckling analysis of i-beams using finite element analysis |
publisher |
Nanyang Technological University |
publishDate |
2020 |
url |
https://hdl.handle.net/10356/141112 |
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1759855992228544512 |