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Dynamic Stiffness Method for free vibration of composite cylindrical shells containing fluid

机译:含流体复合圆柱壳自由振动的动力刚度法

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The present work deals with a theoretical investigation on free vibration of composite circular cylindrical shells containing fluid. A new precise analytical model using the Dynamic Stiffness Method (DSM) or Continuous Elements (CEM) based on the Reissner-Mindlin theory and non-viscous incompressible fluid equations has been proposed for the studied structures. Numerical examples are given for analyzing natural frequencies and harmonic responses of clamped-free cylindrical shells partially and completely filled with fluid. To compare with the theoretical results, some experimental results have been obtained on the free vibration of a clamped-free glass fiber/polyester cylindrical shells partially filled with water by using a multi-vibration measuring machine (DEWEBOOK-DASYLab 5.61.10). Results calculated by the proposed computational model for studied composite cylindrical shells are in good agreement with experiments.
机译:目前的工作是对含流体的复合圆柱壳自由振动的理论研究。提出了一种基于Reissner-Mindlin理论和动态非粘性不可压缩流体方程的动态刚度方法(DSM)或连续元素(CEM)的精确解析模型。给出了用于分析部分和完全充满流体的无夹紧圆柱壳固有频率和谐波响应的数值示例。为了与理论结果进行比较,使用多振动测量机(DEWEBOOK-DASYLab 5.61.10)对部分夹有水的无夹持玻璃纤维/聚酯圆柱壳的自由振动获得了一些实验结果。所提出的计算模型对复合材料圆柱壳的计算结果与实验吻合良好。

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