Theoretical and Experimental Investigation of Critical Buckling Load of Combined Columns
The work done in this research is dedicated to compute the critical buckling load of combined columns. This is performed using theoretical and experimental analyses. The combined column is made of two materials, namely copper and aluminum alloys. The theoretical approach involves numerical analysis...
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| Format: | Article |
| Language: | English |
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Faculty of Engineering, University of Kufa
2025-02-01
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| Series: | Mağallaẗ Al-kūfaẗ Al-handasiyyaẗ |
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| Online Access: | https://journal.uokufa.edu.iq/index.php/kje/article/view/17179 |
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| author | Hayder Zuhair Zainy Aziz D. Almawash Saddam K. Al-Raheem Luay S. Al-Ansari Mohammed Al-Edhari |
| author_facet | Hayder Zuhair Zainy Aziz D. Almawash Saddam K. Al-Raheem Luay S. Al-Ansari Mohammed Al-Edhari |
| author_sort | Hayder Zuhair Zainy |
| collection | DOAJ |
| description | The work done in this research is dedicated to compute the critical buckling load of combined columns. This is performed using theoretical and experimental analyses. The combined column is made of two materials, namely copper and aluminum alloys. The theoretical approach involves numerical analysis using ANSYS and analytical analysis using the equivalent stiffness method. The study determines the critical buckling load by considering many parameters. These parameters include lengths of copper and aluminum in the combined columns, cross-sectional geometries (square, circle, and hexagon), and boundary conditions. The experimental work is carried out using a Strut Bucking Apparatus on a combined column with circular cross-sections and different end supports. The findings show that the critical buckling loads achieved from numerical and analytical analysis are in good agreement with those obtained from experimental analysis. It is found that the critical buckling load increases with increasing the length of copper in the combined column and with more restrictive end supports. There is a good match of critical buckling load between those achieved from the equivalent stiffness method and ANSYS model for any considered cross-sectional geometries (square, circle, and hexagon) and two types of support (fixed-fixed and fixed-pinned). The results reveal that the combined columns with square cross-sections have higher critical buckling loads than those with circular or hexagonal cross-sections. The highest percentage errors of critical buckling load between the experimental method and theoretical methods (equivalent stiffness method and ANSYS models) are (-13.120, -12.768, and -12.453) % and (-13.083, -18.039, and -19.052) % for pinned-pinned, fixed-pinned, and fixed-fixed columns respectively.
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| format | Article |
| id | doaj-art-fbfb796ad8574cab954e11903af1718e |
| institution | Kabale University |
| issn | 2071-5528 2523-0018 |
| language | English |
| publishDate | 2025-02-01 |
| publisher | Faculty of Engineering, University of Kufa |
| record_format | Article |
| series | Mağallaẗ Al-kūfaẗ Al-handasiyyaẗ |
| spelling | doaj-art-fbfb796ad8574cab954e11903af1718e2025-02-06T07:48:12ZengFaculty of Engineering, University of KufaMağallaẗ Al-kūfaẗ Al-handasiyyaẗ2071-55282523-00182025-02-01160134436010.30572/2018/KJE/160120 Theoretical and Experimental Investigation of Critical Buckling Load of Combined ColumnsHayder Zuhair Zainy0Aziz D. Almawash1Saddam K. Al-Raheem2Luay S. Al-Ansari3Mohammed Al-Edhari4https://orcid.org/0009-0004-3329-3660Mechanical Engineering Department, Faculty of Engineering, University of Kufa, IraqUniversity of Kufa, College of Engineering, Department of Mechanical Engineering, Najaf, IraqUniversity of Kufa, College of Engineering, Department of Mechanical Engineering, Najaf, IraqMechanical Engineering Department, Faculty of Engineering, University of Kufa, IraqMechanical Engineering Department, Faculty of Engineering, University of Kufa, IraqThe work done in this research is dedicated to compute the critical buckling load of combined columns. This is performed using theoretical and experimental analyses. The combined column is made of two materials, namely copper and aluminum alloys. The theoretical approach involves numerical analysis using ANSYS and analytical analysis using the equivalent stiffness method. The study determines the critical buckling load by considering many parameters. These parameters include lengths of copper and aluminum in the combined columns, cross-sectional geometries (square, circle, and hexagon), and boundary conditions. The experimental work is carried out using a Strut Bucking Apparatus on a combined column with circular cross-sections and different end supports. The findings show that the critical buckling loads achieved from numerical and analytical analysis are in good agreement with those obtained from experimental analysis. It is found that the critical buckling load increases with increasing the length of copper in the combined column and with more restrictive end supports. There is a good match of critical buckling load between those achieved from the equivalent stiffness method and ANSYS model for any considered cross-sectional geometries (square, circle, and hexagon) and two types of support (fixed-fixed and fixed-pinned). The results reveal that the combined columns with square cross-sections have higher critical buckling loads than those with circular or hexagonal cross-sections. The highest percentage errors of critical buckling load between the experimental method and theoretical methods (equivalent stiffness method and ANSYS models) are (-13.120, -12.768, and -12.453) % and (-13.083, -18.039, and -19.052) % for pinned-pinned, fixed-pinned, and fixed-fixed columns respectively. https://journal.uokufa.edu.iq/index.php/kje/article/view/17179critical buckling loadcombined columnansys modelequivalent stiffness methodexperimental analysis |
| spellingShingle | Hayder Zuhair Zainy Aziz D. Almawash Saddam K. Al-Raheem Luay S. Al-Ansari Mohammed Al-Edhari Theoretical and Experimental Investigation of Critical Buckling Load of Combined Columns Mağallaẗ Al-kūfaẗ Al-handasiyyaẗ critical buckling load combined column ansys model equivalent stiffness method experimental analysis |
| title | Theoretical and Experimental Investigation of Critical Buckling Load of Combined Columns |
| title_full | Theoretical and Experimental Investigation of Critical Buckling Load of Combined Columns |
| title_fullStr | Theoretical and Experimental Investigation of Critical Buckling Load of Combined Columns |
| title_full_unstemmed | Theoretical and Experimental Investigation of Critical Buckling Load of Combined Columns |
| title_short | Theoretical and Experimental Investigation of Critical Buckling Load of Combined Columns |
| title_sort | theoretical and experimental investigation of critical buckling load of combined columns |
| topic | critical buckling load combined column ansys model equivalent stiffness method experimental analysis |
| url | https://journal.uokufa.edu.iq/index.php/kje/article/view/17179 |
| work_keys_str_mv | AT hayderzuhairzainy theoreticalandexperimentalinvestigationofcriticalbucklingloadofcombinedcolumns AT azizdalmawash theoreticalandexperimentalinvestigationofcriticalbucklingloadofcombinedcolumns AT saddamkalraheem theoreticalandexperimentalinvestigationofcriticalbucklingloadofcombinedcolumns AT luaysalansari theoreticalandexperimentalinvestigationofcriticalbucklingloadofcombinedcolumns AT mohammedaledhari theoreticalandexperimentalinvestigationofcriticalbucklingloadofcombinedcolumns |