考虑声-结构相互作用的圆柱壳输送流体的有限元振动分析

Jsme International Journal Series C-mechanical Systems Machine Elements and Manufacturing Pub Date : 2006-06-15 DOI:10.1299/JSMEC.49.488

W. Jeong, Y. Seo, Se-Jin Ahn, W. Yoo

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引用次数: 5

摘要

采用有限元法对均匀流动圆柱壳的动力特性进行了分析。壳的动力学基于Donnell理论，认为圆柱壳中的流体满足亥姆霍兹方程。根据周向模态和频率计算流体的有效厚度。提出了考虑内部流体耦合效应的壳频响函数估计方法。这些结果与考虑流体满足拉普拉斯方程的结果进行了比较。讨论了流体速度对频响的影响。

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Finite Element Vibration Analysis of Cylindrical Shells Conveying Fluid with Considering Acoustic-Structure Interactions

The dynamic behavior of the cylindrical shell with uniform flow is formulated by the finite element method. The dynamics of the shell is based on Donnell’s theory and the fluid in cylindrical shell is considered satisfying the Helmholtz equation. The effective thickness of fluid is calculated according to the circumferential modes and the frequencies. An estimation of the FRF (frequency response function) of the shell with taking into consideration of the coupled effects of the internal fluid is presented. These results are compared with the results considering fluid satisfying Laplace equation. The influence of fluid velocity on the FRF is also discussed.

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Jsme International Journal Series C-mechanical Systems Machine Elements and Manufacturing

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