Analysis on external pressure bearing capacity of cylindrical shell based on measured geometric defects
<b>[Objectives]</b> The purpose of this paper is to study the way to establish finite element models with real geometric defects,and to predict and analyze the bearing capacity of a scale down pressureresisting cylindrical shell structure based on different types of defects.<b>[Met...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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Editorial Office of Chinese Journal of Ship Research
2019-08-01
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| Series: | Zhongguo Jianchuan Yanjiu |
| Subjects: | |
| Online Access: | http://www.ship-research.com/EN/Y2019/V14/I4/40 |
| _version_ | 1819264226484551680 |
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| author | Wang Wei Zhu Shiyang He Weiping |
| author_facet | Wang Wei Zhu Shiyang He Weiping |
| author_sort | Wang Wei |
| collection | DOAJ |
| description | <b>[Objectives]</b> The purpose of this paper is to study the way to establish finite element models with real geometric defects,and to predict and analyze the bearing capacity of a scale down pressureresisting cylindrical shell structure based on different types of defects.<b>[Methods]</b> Therefore,a geometric defect extraction method based on quadratic transformation is proposed,then the method of introducing the measured initial geometric defect,which is expressed by double Fourier series,is established. Finally, the buckling capacity of scale down pressure-resisting cylindrical shell under external pressure is analyzed and obtained based on eigenvalue modal defect and measured defect.<b>[Results]</b> The results indicate that Fourier series method only involves traversing of grid nodes and calculation of a few function values and can significantly improve the calculation efficiency of defect introduction without reducing the accuracy of calculation.<b>[Conclusions]</b> Fourier series method can provide guidance for accurate analysis of ultimate bearing capacity of cylindrical shell structure and structural optimization design. |
| first_indexed | 2024-12-23T20:26:07Z |
| format | Article |
| id | doaj.art-0c4947f2d2c84615a44be497b5f2869b |
| institution | Directory Open Access Journal |
| issn | 1673-3185 1673-3185 |
| language | English |
| last_indexed | 2024-12-23T20:26:07Z |
| publishDate | 2019-08-01 |
| publisher | Editorial Office of Chinese Journal of Ship Research |
| record_format | Article |
| series | Zhongguo Jianchuan Yanjiu |
| spelling | doaj.art-0c4947f2d2c84615a44be497b5f2869b2022-12-21T17:32:22ZengEditorial Office of Chinese Journal of Ship ResearchZhongguo Jianchuan Yanjiu1673-31851673-31852019-08-01144404610.19693/j.issn.1673-3185.01355201904006Analysis on external pressure bearing capacity of cylindrical shell based on measured geometric defectsWang Wei0Zhu Shiyang1He Weiping2Naval Military Representative Office in Huludao Area, Huludao 125004, ChinaWuhan Second Ship Design and Research Institute, Wuhan 430205, ChinaWuhan Second Ship Design and Research Institute, Wuhan 430205, China<b>[Objectives]</b> The purpose of this paper is to study the way to establish finite element models with real geometric defects,and to predict and analyze the bearing capacity of a scale down pressureresisting cylindrical shell structure based on different types of defects.<b>[Methods]</b> Therefore,a geometric defect extraction method based on quadratic transformation is proposed,then the method of introducing the measured initial geometric defect,which is expressed by double Fourier series,is established. Finally, the buckling capacity of scale down pressure-resisting cylindrical shell under external pressure is analyzed and obtained based on eigenvalue modal defect and measured defect.<b>[Results]</b> The results indicate that Fourier series method only involves traversing of grid nodes and calculation of a few function values and can significantly improve the calculation efficiency of defect introduction without reducing the accuracy of calculation.<b>[Conclusions]</b> Fourier series method can provide guidance for accurate analysis of ultimate bearing capacity of cylindrical shell structure and structural optimization design.http://www.ship-research.com/EN/Y2019/V14/I4/40cylindrical shellbearing capacitygeometric defectsFourier series |
| spellingShingle | Wang Wei Zhu Shiyang He Weiping Analysis on external pressure bearing capacity of cylindrical shell based on measured geometric defects Zhongguo Jianchuan Yanjiu cylindrical shell bearing capacity geometric defects Fourier series |
| title | Analysis on external pressure bearing capacity of cylindrical shell based on measured geometric defects |
| title_full | Analysis on external pressure bearing capacity of cylindrical shell based on measured geometric defects |
| title_fullStr | Analysis on external pressure bearing capacity of cylindrical shell based on measured geometric defects |
| title_full_unstemmed | Analysis on external pressure bearing capacity of cylindrical shell based on measured geometric defects |
| title_short | Analysis on external pressure bearing capacity of cylindrical shell based on measured geometric defects |
| title_sort | analysis on external pressure bearing capacity of cylindrical shell based on measured geometric defects |
| topic | cylindrical shell bearing capacity geometric defects Fourier series |
| url | http://www.ship-research.com/EN/Y2019/V14/I4/40 |
| work_keys_str_mv | AT wangwei analysisonexternalpressurebearingcapacityofcylindricalshellbasedonmeasuredgeometricdefects AT zhushiyang analysisonexternalpressurebearingcapacityofcylindricalshellbasedonmeasuredgeometricdefects AT heweiping analysisonexternalpressurebearingcapacityofcylindricalshellbasedonmeasuredgeometricdefects |