Buckling of composite cylindrical shells with ovality and thickness variation subjected to hydrostatic pressure
The initial geometric imperfection is one of the primary factors affecting the buckling behaviors of composite cylindrical shells under hydrostatic pressure. In this study, ovality and thickness variations as two representative types of the geometric imperfections are considered. After measuring the...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
KeAi Communications Co., Ltd.
2022-05-01
|
| Series: | Defence Technology |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214914721001185 |
| _version_ | 1818232069020450816 |
|---|---|
| author | Zhun Li Ke-chun Shen Xin-hu Zhang Guang Pan |
| author_facet | Zhun Li Ke-chun Shen Xin-hu Zhang Guang Pan |
| author_sort | Zhun Li |
| collection | DOAJ |
| description | The initial geometric imperfection is one of the primary factors affecting the buckling behaviors of composite cylindrical shells under hydrostatic pressure. In this study, ovality and thickness variations as two representative types of the geometric imperfections are considered. After measuring the geometric imperfections, a typical carbon fiber reinforced polymers (CFRP) cylindrical shell is tested to obtain the buckling pressure. The buckling behaviors of the shell sample are analyzed in combination with the strain responses. By using the nonlinear numerical analysis, the buckling shapes of the CFRP cylinder shells with different combinations of ovality and thickness variation are firstly discussed. The rules of influence of such imperfections on the buckling pressure are then obtained by nonlinear regression method. Finally, an empirical formula is proposed to predict the buckling pressure of the composite cylinder shells, and the calculated results from the formula are in good agreement with the numerical results. |
| first_indexed | 2024-12-12T11:00:25Z |
| format | Article |
| id | doaj.art-45cd35d21f3e475c81f431b98a17fb1d |
| institution | Directory Open Access Journal |
| issn | 2214-9147 |
| language | English |
| last_indexed | 2024-12-12T11:00:25Z |
| publishDate | 2022-05-01 |
| publisher | KeAi Communications Co., Ltd. |
| record_format | Article |
| series | Defence Technology |
| spelling | doaj.art-45cd35d21f3e475c81f431b98a17fb1d2022-12-22T00:26:32ZengKeAi Communications Co., Ltd.Defence Technology2214-91472022-05-01185862875Buckling of composite cylindrical shells with ovality and thickness variation subjected to hydrostatic pressureZhun Li0Ke-chun Shen1Xin-hu Zhang2Guang Pan3School of Marine Science and Technology, Northwestern Polytechnical University, Xi'an, 710072, China; Key Laboratory for Unmanned Underwater Vehicle, Northwestern Polytechnical University, Xi'an, 710072, ChinaSchool of Marine Science and Technology, Northwestern Polytechnical University, Xi'an, 710072, China; Key Laboratory for Unmanned Underwater Vehicle, Northwestern Polytechnical University, Xi'an, 710072, China; Structural Ceramics and Composites Engineering Research Center, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, China; Corresponding author.School of Marine Science and Technology, Northwestern Polytechnical University, Xi'an, 710072, China; Key Laboratory for Unmanned Underwater Vehicle, Northwestern Polytechnical University, Xi'an, 710072, ChinaSchool of Marine Science and Technology, Northwestern Polytechnical University, Xi'an, 710072, China; Key Laboratory for Unmanned Underwater Vehicle, Northwestern Polytechnical University, Xi'an, 710072, ChinaThe initial geometric imperfection is one of the primary factors affecting the buckling behaviors of composite cylindrical shells under hydrostatic pressure. In this study, ovality and thickness variations as two representative types of the geometric imperfections are considered. After measuring the geometric imperfections, a typical carbon fiber reinforced polymers (CFRP) cylindrical shell is tested to obtain the buckling pressure. The buckling behaviors of the shell sample are analyzed in combination with the strain responses. By using the nonlinear numerical analysis, the buckling shapes of the CFRP cylinder shells with different combinations of ovality and thickness variation are firstly discussed. The rules of influence of such imperfections on the buckling pressure are then obtained by nonlinear regression method. Finally, an empirical formula is proposed to predict the buckling pressure of the composite cylinder shells, and the calculated results from the formula are in good agreement with the numerical results.http://www.sciencedirect.com/science/article/pii/S2214914721001185CompositeCylindrical shellBucklingHydrostatic pressureImperfections |
| spellingShingle | Zhun Li Ke-chun Shen Xin-hu Zhang Guang Pan Buckling of composite cylindrical shells with ovality and thickness variation subjected to hydrostatic pressure Defence Technology Composite Cylindrical shell Buckling Hydrostatic pressure Imperfections |
| title | Buckling of composite cylindrical shells with ovality and thickness variation subjected to hydrostatic pressure |
| title_full | Buckling of composite cylindrical shells with ovality and thickness variation subjected to hydrostatic pressure |
| title_fullStr | Buckling of composite cylindrical shells with ovality and thickness variation subjected to hydrostatic pressure |
| title_full_unstemmed | Buckling of composite cylindrical shells with ovality and thickness variation subjected to hydrostatic pressure |
| title_short | Buckling of composite cylindrical shells with ovality and thickness variation subjected to hydrostatic pressure |
| title_sort | buckling of composite cylindrical shells with ovality and thickness variation subjected to hydrostatic pressure |
| topic | Composite Cylindrical shell Buckling Hydrostatic pressure Imperfections |
| url | http://www.sciencedirect.com/science/article/pii/S2214914721001185 |
| work_keys_str_mv | AT zhunli bucklingofcompositecylindricalshellswithovalityandthicknessvariationsubjectedtohydrostaticpressure AT kechunshen bucklingofcompositecylindricalshellswithovalityandthicknessvariationsubjectedtohydrostaticpressure AT xinhuzhang bucklingofcompositecylindricalshellswithovalityandthicknessvariationsubjectedtohydrostaticpressure AT guangpan bucklingofcompositecylindricalshellswithovalityandthicknessvariationsubjectedtohydrostaticpressure |