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Steel and Composite Structures Volume 41, Number 4, November25 2021 , pages 521-531 DOI: https://doi.org/10.12989/scs.2021.41.4.521 |
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Formulation of continuous element of prestressed stiffened circular cylindrical shell |
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Imene Harbaoui, Mohamed Amine Khadimallah, Abdelhakim Benslimane,
Guoyong Jin and Omer Civalek
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| Abstract | ||
| This paper presents a dynamic analysis of a prestressed stiffened circular cylindrical shell subjected to external distributed pressure using the dynamic stiffness method. This approach is based on the first order shear deformation theory founded on love's first approximation theory. Natural frequencies are easily processed. The dynamic stiffness matrix has been built. The formulation of this element requires coupling pre-stressed shell and circumferential stiffener. The vibration analysis is performed with numerical examples to determine the performance of this model and the effect of presetress and stiffener on the frequency spectrum. The response of the system is determined with applied equivalent loads on element boundaries. Compared to the finite element method, the proposed element has many advantages such as the model size, the computing time, the accuracy and the higher precision. | ||
| Key Words | ||
| circumferential stiffener; dynamic stiffness matrix; prestressed; the vibration analysis | ||
| Address | ||
| Imene Harbaoui: Laboratory of Applied Mechanics and Engineering LR-MAI, University Tunis El Manar- -ENIT BP37- Le belvédère, 1002, Tunis Mohamed Amine Khadimallah: Prince Sattam Bin Abdulaziz University, College of Engineering, Al-Kharj, Saudi Arabia;Laboratory of Systems and Applied Mechanics, Polytechnic School of Tunisia, University of Carthage, Tunis, Tunisia Abdelhakim Benslimane: Laboratoire de Mécanique Matériaux et Énergétique (L2ME), Faculté de Technologie, Université de Bejaia, 06000 Bejaia, Algeria Guoyong Jin: College of Power and Energy Engineering, Harbin Engineering University, Harbin 150001, PR China Omer Civalek: China Medial University, Taichung-Taiwan | ||