Free vibration analysis of joined composite conical-cylindrical-conical shells containing fluid
A new continuous element (CE) formulation has been presented in this paper for the vibration analysis of cross-ply composite joined conical-cylindrical-conical shells containing fluid. Governing equations are obtained using thick shell theory of Midlin, taking into account the shear deflection effe...
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| Format: | Article |
| Language: | English |
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Publishing House for Science and Technology
2016-12-01
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| Series: | Vietnam Journal of Mechanics |
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| Online Access: | https://vjs.ac.vn/index.php/vjmech/article/view/6954 |
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| author | Vu Quoc Hien Tran Ich Thinh Nguyen Manh Cuong |
| author_facet | Vu Quoc Hien Tran Ich Thinh Nguyen Manh Cuong |
| author_sort | Vu Quoc Hien |
| collection | DOAJ |
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A new continuous element (CE) formulation has been presented in this paper for the vibration analysis of cross-ply composite joined conical-cylindrical-conical shells containing fluid. Governing equations are obtained using thick shell theory of Midlin, taking into account the shear deflection effects. The velocity potential, Bernoulli's equation and impermeability condition have been applied to the shell-fluid interface to obtain an explicit expression for fluid pressure. The dynamic stiffness matrix has been built from which natural frequencies have been calculated. The appropriate expressions among stress resultants and deformations are extracted as continuity conditions at the joining section. A matlab program is written using the CE formulation in order to validate our model. Numerical results on natural frequencies are compared to those obtained by the Finite Element Method and validated with the available results in other investigations. This paper emphasizes advantages of CE model, the effects of the fluid filling and shell geometries on the natural frequencies of joined composite conical-cylindrical-conical shells containing fluid.
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| format | Article |
| id | doaj-art-7a4eb7e911fa477f9a7fa296362f129f |
| institution | DOAJ |
| issn | 0866-7136 2815-5882 |
| language | English |
| publishDate | 2016-12-01 |
| publisher | Publishing House for Science and Technology |
| record_format | Article |
| series | Vietnam Journal of Mechanics |
| spelling | doaj-art-7a4eb7e911fa477f9a7fa296362f129f2025-08-20T03:04:43ZengPublishing House for Science and TechnologyVietnam Journal of Mechanics0866-71362815-58822016-12-0138410.15625/0866-7136/6954Free vibration analysis of joined composite conical-cylindrical-conical shells containing fluidVu Quoc Hien0Tran Ich Thinh1Nguyen Manh Cuong2Viet Tri University of Industry, Phu Tho, VietnamHanoi University of Science and Technology, VietnamHanoi University of Science and Technology, Vietnam A new continuous element (CE) formulation has been presented in this paper for the vibration analysis of cross-ply composite joined conical-cylindrical-conical shells containing fluid. Governing equations are obtained using thick shell theory of Midlin, taking into account the shear deflection effects. The velocity potential, Bernoulli's equation and impermeability condition have been applied to the shell-fluid interface to obtain an explicit expression for fluid pressure. The dynamic stiffness matrix has been built from which natural frequencies have been calculated. The appropriate expressions among stress resultants and deformations are extracted as continuity conditions at the joining section. A matlab program is written using the CE formulation in order to validate our model. Numerical results on natural frequencies are compared to those obtained by the Finite Element Method and validated with the available results in other investigations. This paper emphasizes advantages of CE model, the effects of the fluid filling and shell geometries on the natural frequencies of joined composite conical-cylindrical-conical shells containing fluid. https://vjs.ac.vn/index.php/vjmech/article/view/6954Free vibrationcross-ply composite joined conical-cylindricall-conical shellsdynamics stiffness matrixcontinuous element method |
| spellingShingle | Vu Quoc Hien Tran Ich Thinh Nguyen Manh Cuong Free vibration analysis of joined composite conical-cylindrical-conical shells containing fluid Vietnam Journal of Mechanics Free vibration cross-ply composite joined conical-cylindricall-conical shells dynamics stiffness matrix continuous element method |
| title | Free vibration analysis of joined composite conical-cylindrical-conical shells containing fluid |
| title_full | Free vibration analysis of joined composite conical-cylindrical-conical shells containing fluid |
| title_fullStr | Free vibration analysis of joined composite conical-cylindrical-conical shells containing fluid |
| title_full_unstemmed | Free vibration analysis of joined composite conical-cylindrical-conical shells containing fluid |
| title_short | Free vibration analysis of joined composite conical-cylindrical-conical shells containing fluid |
| title_sort | free vibration analysis of joined composite conical cylindrical conical shells containing fluid |
| topic | Free vibration cross-ply composite joined conical-cylindricall-conical shells dynamics stiffness matrix continuous element method |
| url | https://vjs.ac.vn/index.php/vjmech/article/view/6954 |
| work_keys_str_mv | AT vuquochien freevibrationanalysisofjoinedcompositeconicalcylindricalconicalshellscontainingfluid AT tranichthinh freevibrationanalysisofjoinedcompositeconicalcylindricalconicalshellscontainingfluid AT nguyenmanhcuong freevibrationanalysisofjoinedcompositeconicalcylindricalconicalshellscontainingfluid |