Influence of Initial Imperfections on PMMA Spherical Shell
This paper focused on the influence of initial imperfection on the critical load of PMMA pressure spherical shell by introducing buckling modes as the initial defect. Four types of pressure spherical shells including complete spherical shell, spherical shell with single penetration, spherical shell...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2022-01-01
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| Series: | Advances in Materials Science and Engineering |
| Online Access: | http://dx.doi.org/10.1155/2022/3481368 |
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| _version_ | 1832562402741190656 |
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| author | Haitao Zhu Di Liu Han Bao Zhongjun Ding Yi Zhang |
| author_facet | Haitao Zhu Di Liu Han Bao Zhongjun Ding Yi Zhang |
| author_sort | Haitao Zhu |
| collection | DOAJ |
| description | This paper focused on the influence of initial imperfection on the critical load of PMMA pressure spherical shell by introducing buckling modes as the initial defect. Four types of pressure spherical shells including complete spherical shell, spherical shell with single penetration, spherical shell with double penetrations, and hyperspherical shell were studied. The distribution of initial imperfections was given through the modal configuration of linear eigenvalue analysis, and then the buckling critical load of the spherical shell was analyzed by using the consistent modal defect method and N-order modal defect method. Results confirmed that: Initial imperfections have a great different influence on pressure spherical shells with varying penetration. It has the greatest influence on the critical load of a spherical shell with double penetration at a 5 mm defect. With the increase of defect amplitude, the critical load of the spherical shell decreases. The analysis results also show that the first-order mode is usually not the worst geometric defect configuration of PMMA pressure spherical shell. And the worst mode may appear in higher-order mode due to the influence of penetration, initial defect amplitude, and different thickness-diameter ratio. |
| format | Article |
| id | doaj-art-56a95609c5ee470a9679bc9aba4b522e |
| institution | Kabale University |
| issn | 1687-8442 |
| language | English |
| publishDate | 2022-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Materials Science and Engineering |
| spelling | doaj-art-56a95609c5ee470a9679bc9aba4b522e2025-02-03T01:22:42ZengWileyAdvances in Materials Science and Engineering1687-84422022-01-01202210.1155/2022/3481368Influence of Initial Imperfections on PMMA Spherical ShellHaitao Zhu0Di Liu1Han Bao2Zhongjun Ding3Yi Zhang4Yantai Graduate SchoolYantai Graduate SchoolYantai Graduate SchoolCollege of Shipbuilding EngineeringCollege of Shipbuilding EngineeringThis paper focused on the influence of initial imperfection on the critical load of PMMA pressure spherical shell by introducing buckling modes as the initial defect. Four types of pressure spherical shells including complete spherical shell, spherical shell with single penetration, spherical shell with double penetrations, and hyperspherical shell were studied. The distribution of initial imperfections was given through the modal configuration of linear eigenvalue analysis, and then the buckling critical load of the spherical shell was analyzed by using the consistent modal defect method and N-order modal defect method. Results confirmed that: Initial imperfections have a great different influence on pressure spherical shells with varying penetration. It has the greatest influence on the critical load of a spherical shell with double penetration at a 5 mm defect. With the increase of defect amplitude, the critical load of the spherical shell decreases. The analysis results also show that the first-order mode is usually not the worst geometric defect configuration of PMMA pressure spherical shell. And the worst mode may appear in higher-order mode due to the influence of penetration, initial defect amplitude, and different thickness-diameter ratio.http://dx.doi.org/10.1155/2022/3481368 |
| spellingShingle | Haitao Zhu Di Liu Han Bao Zhongjun Ding Yi Zhang Influence of Initial Imperfections on PMMA Spherical Shell Advances in Materials Science and Engineering |
| title | Influence of Initial Imperfections on PMMA Spherical Shell |
| title_full | Influence of Initial Imperfections on PMMA Spherical Shell |
| title_fullStr | Influence of Initial Imperfections on PMMA Spherical Shell |
| title_full_unstemmed | Influence of Initial Imperfections on PMMA Spherical Shell |
| title_short | Influence of Initial Imperfections on PMMA Spherical Shell |
| title_sort | influence of initial imperfections on pmma spherical shell |
| url | http://dx.doi.org/10.1155/2022/3481368 |
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