Numerical modeling and analysis of fluid-filled truncated conical shells with ring stiffeners

IF 3.4 2区 工程技术 Q1 ENGINEERING, MECHANICAL Journal of Fluids and Structures Pub Date : 2024-04-23 DOI:10.1016/j.jfluidstructs.2024.104121
Mohammadamin Esmaeilzadehazimi, Mehrdad Bakhtiari, Mohammad Toorani, Aouni A. Lakis
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Abstract

This study uses a hybrid finite element method to predict dynamic behavior of truncated conical shells with ring stiffeners under fluid loading. The proposed approach combines classical shell theory and the finite element method, making use of displacement functions derived from exact solutions of Sanders’ shell equilibrium equations for conical shells. The analysis of the shell-fluid interface involves leveraging the velocity potential, Bernoulli’s equation, and impermeability conditions to determine an explicit expression for fluid pressure. To the best of our knowledge, this paper is the first to compare the methods applied to ring-stiffened shells against other numerical and experimental findings. Our results on conical shells in various conditions, with and without ring stiffeners, are largely consistent with previous findings. This study also explores the influence of geometric parameters, stiffener quantity, cone angle, and applied boundary conditions on the natural frequency of fluid-loaded ring-stiffened conical shells. The paper concludes with a discussion of several useful implications for further research.

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带环形加强筋的充液截顶锥形壳的数值建模与分析
本研究采用混合有限元法预测带有环形加强筋的截顶锥形壳在流体载荷作用下的动态行为。所提出的方法结合了经典壳体理论和有限元方法,利用了从圆锥壳体的桑德斯壳体平衡方程精确解法中导出的位移函数。对壳-流体界面的分析包括利用速度势能、伯努利方程和防渗条件来确定流体压力的明确表达式。据我们所知,本文首次将应用于环形加劲壳的方法与其他数值和实验结果进行了比较。我们对各种条件下的圆锥形壳体(有无环形加强筋)的研究结果与之前的研究结果基本一致。本研究还探讨了几何参数、加劲件数量、锥角和应用边界条件对流体载荷环形加劲锥壳固有频率的影响。论文最后讨论了进一步研究的若干有益启示。
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来源期刊
Journal of Fluids and Structures
Journal of Fluids and Structures 工程技术-工程:机械
CiteScore
6.90
自引率
8.30%
发文量
173
审稿时长
65 days
期刊介绍: The Journal of Fluids and Structures serves as a focal point and a forum for the exchange of ideas, for the many kinds of specialists and practitioners concerned with fluid–structure interactions and the dynamics of systems related thereto, in any field. One of its aims is to foster the cross–fertilization of ideas, methods and techniques in the various disciplines involved. The journal publishes papers that present original and significant contributions on all aspects of the mechanical interactions between fluids and solids, regardless of scale.
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