Dynamics and stability of conical/cylindrical shells conveying subsonic compressible fluid flows with general boundary conditions

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• 作者：M. Rahmanian^a ; ^b ; R.D. Firouz-Abadi^a ; ^{firouzabadi@sharif.edu} ; E. Cigeroglu^b
• 关键词：Conical shells ; Fluid&ndash ; structure interaction ; Reduced order model ; Compressibility effects ; Static condensation
• 刊名：International Journal of Mechanical Sciences
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：120
• 期：Complete
• 页码：42-61
• 全文大小：2866 K
• 卷排序：120

文摘

Equations are solved by a flexible and rapid-convergent method; capable of capturing all sets of boundary conditions. A reduced order model is constructed to minimize the degrees of freedom in the fluid solution. The final coupled field solution is significantly faster than other conventional solution algorithms. A unified solution is provided to study the stability of fluid loaded conical shells, for the first time in literature. Stability margins of conical/cylindrical shells are reported for all sets of structural boundary conditions. The compressibility is shown to have significant effects on the dynamic characteristics of conical/cylindrical shells.