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Structural Engineering and Mechanics Volume 78, Number 6, June25 2021 , pages 765-775 DOI: https://doi.org/10.12989/sem.2021.78.6.765 |
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Doubly curved shell vibration using coupled finite element method |
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S.M. Chorfi and A. Houmat
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| Abstract | ||
| In this study, we present an efficient coupled method for the doubly curved shell vibration modeling. The proposed model is based on the coupling of the hierarchical p-finite element method and the standard h-finite element method. The helements define the curved boundaries of the shell while the p-elements describe the interior domain. The connectivity between the two discretized domains is assured by the least square method. In comparison to conventional models, the coupled model captures accurately the shell curvilinear boundary with high computational efficiency and small number of elements. The proposed model is validated against both analytical solution and numerical simulation. Doubly curved shell structures with different cutouts are presented to show the robustness, applicability and computational convenience of the proposed coupled approach for complex shell geometries. | ||
| Key Words | ||
| p-version of FEM; h-version of FEM; coupling; vibration; doubly-curved shell; cutout; curvilinear planform | ||
| Address | ||
| S.M. Chorfi and A. Houmat: Department of Mechanical Engineering, Faculty of Engineering, University of Tlemcen, B.P. 230, Tlemcen 13000, Algeria | ||