Buckling of imperfect cone-cylinder transition subjected to external pressure
The paper presents a result of the numerical investigation into the buckling behaviour of geometrically imperfect cone-cylinder transition subjected to external pressure. The models are assumed to be made from the Hiduminium alloy (HE-15). Various initial geometric imperfections such as eigenmode im...
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| Language: | en |
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Elsevier Ltd.
2020
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| Online Access: | http://eprints.utem.edu.my/id/eprint/24521/2/BUCKLING%20OF%20IMPERFECT%20CONE-CYLINDER%20TRANSITION%20SUBJECTED%20TO%20EXTERNAL%20PRESSURE.PDF http://eprints.utem.edu.my/id/eprint/24521/ https://www.sciencedirect.com/science/article/pii/S0308016120301514 |
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| author | Ifayefunmi, Olawale Ismail, Mohd Shahrom Sheikh Md Fadzullah, Siti Hajar Johar, M |
| author_facet | Ifayefunmi, Olawale Ismail, Mohd Shahrom Sheikh Md Fadzullah, Siti Hajar Johar, M |
| author_sort | Ifayefunmi, Olawale |
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| content_provider | Universiti Teknikal Malaysia Melaka |
| content_source | UTEM Institutional Repository |
| continent | Asia |
| country | Malaysia |
| description | The paper presents a result of the numerical investigation into the buckling behaviour of geometrically imperfect cone-cylinder transition subjected to external pressure. The models are assumed to be made from the Hiduminium alloy (HE-15). Various initial geometric imperfections such as eigenmode imperfection and Single Load Indentation (SLI) imperfections were superimposed on the perfect cone-cylinder shell. The reduction of the buckling strength was then quantified numerically. As expected, the buckling strength of cone-cylinder shells were strongly affected by initial geometric imperfection and the reduction in buckling strength was seen to be strongly dependent on the choice and location of imperfection. Overall, the lowest SLI imperfection curve produces the worst sensitivity as compared to the eigenmode imperfection curve. Conservative knockdown factors that can be implemented for the design of cone-cylinder transition have been proposed for both eigenmode imperfection and SLI imperfection. Finally, a simple empirical solution based on several case studies has been proposed that could reasonably be used to estimate the buckling of externally pressurized cone-cylinder shell transition under Geometrical and Materially Non-linear Analysis (GMNA) and Geometrical and Materially Non-linear Imperfection Analysis (GMNIA) cases. A good correlation with the ultimate strength is observed with the application of the proposed empirical formula |
| format | Article |
| id | my.utem.eprints-24521 |
| institution | Universiti Teknikal Malaysia Melaka |
| language | en |
| publishDate | 2020 |
| publisher | Elsevier Ltd. |
| record_format | eprints |
| spelling | my.utem.eprints-245212022-05-13T15:46:28Z http://eprints.utem.edu.my/id/eprint/24521/ Buckling of imperfect cone-cylinder transition subjected to external pressure Ifayefunmi, Olawale Ismail, Mohd Shahrom Sheikh Md Fadzullah, Siti Hajar Johar, M The paper presents a result of the numerical investigation into the buckling behaviour of geometrically imperfect cone-cylinder transition subjected to external pressure. The models are assumed to be made from the Hiduminium alloy (HE-15). Various initial geometric imperfections such as eigenmode imperfection and Single Load Indentation (SLI) imperfections were superimposed on the perfect cone-cylinder shell. The reduction of the buckling strength was then quantified numerically. As expected, the buckling strength of cone-cylinder shells were strongly affected by initial geometric imperfection and the reduction in buckling strength was seen to be strongly dependent on the choice and location of imperfection. Overall, the lowest SLI imperfection curve produces the worst sensitivity as compared to the eigenmode imperfection curve. Conservative knockdown factors that can be implemented for the design of cone-cylinder transition have been proposed for both eigenmode imperfection and SLI imperfection. Finally, a simple empirical solution based on several case studies has been proposed that could reasonably be used to estimate the buckling of externally pressurized cone-cylinder shell transition under Geometrical and Materially Non-linear Analysis (GMNA) and Geometrical and Materially Non-linear Imperfection Analysis (GMNIA) cases. A good correlation with the ultimate strength is observed with the application of the proposed empirical formula Elsevier Ltd. 2020-11 Article PeerReviewed text en http://eprints.utem.edu.my/id/eprint/24521/2/BUCKLING%20OF%20IMPERFECT%20CONE-CYLINDER%20TRANSITION%20SUBJECTED%20TO%20EXTERNAL%20PRESSURE.PDF Ifayefunmi, Olawale and Ismail, Mohd Shahrom and Sheikh Md Fadzullah, Siti Hajar and Johar, M (2020) Buckling of imperfect cone-cylinder transition subjected to external pressure. International Journal of Pressure Vessels and Piping, 187. pp. 1-12. ISSN 0308-0161 https://www.sciencedirect.com/science/article/pii/S0308016120301514 10.1016/j.ijpvp.2020.104173 |
| spellingShingle | Ifayefunmi, Olawale Ismail, Mohd Shahrom Sheikh Md Fadzullah, Siti Hajar Johar, M Buckling of imperfect cone-cylinder transition subjected to external pressure |
| title | Buckling of imperfect cone-cylinder transition subjected to external pressure |
| title_full | Buckling of imperfect cone-cylinder transition subjected to external pressure |
| title_fullStr | Buckling of imperfect cone-cylinder transition subjected to external pressure |
| title_full_unstemmed | Buckling of imperfect cone-cylinder transition subjected to external pressure |
| title_short | Buckling of imperfect cone-cylinder transition subjected to external pressure |
| title_sort | buckling of imperfect cone-cylinder transition subjected to external pressure |
| url | http://eprints.utem.edu.my/id/eprint/24521/2/BUCKLING%20OF%20IMPERFECT%20CONE-CYLINDER%20TRANSITION%20SUBJECTED%20TO%20EXTERNAL%20PRESSURE.PDF http://eprints.utem.edu.my/id/eprint/24521/ https://www.sciencedirect.com/science/article/pii/S0308016120301514 |
| url_provider | http://eprints.utem.edu.my/ |