Linear thermal-acoustic responses of a composite panel in progressive wave tube based on wavenumber-frequency analysis
Linear thermal-acoustic responses of a composite panel in progressive wave tube based on wavenumber-frequency analysis
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基于波数频率分析的行波管复合板的线性热声响应
DOI：
10.1016/j.jsv.2018.11.011
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发表时间：
2019-03
影响因子：
4.7
通讯作者：
Hua Hongxing
中科院分区：
文献类型：
--
作者：
Huang Xiuchang;Zhou Kai;Tian Yanni;Hua Hongxing
基于波数-频率分析方法，研究了复合材料板在进行波管中的线性热声响应。采用有限元/边界元耦合法（FEM/BEM）研究热环境下面板的模态行为。研究了温度相关材料性能、热应力和初始挠度对模态性能的影响。采用波数-频率分析方法预测了在行压波激励下热加载板的热声响应。对加筋板和未加筋板进行了研究。随着温度的升高，由于热应力的软化作用，模态频率依次减小到最小值，然后主要由于初始挠度的加筋作用，模态频率依次增加，为防止最小模态频率降至零提供了额外的刚度。波数-频率分析能够为激励和面板动态行为之间的相互作用提供物理解释，特别是在波数域的滤波效应方面。热波和行压波联合激励下，加筋板和未加筋板的动力特性是不同的。最后，通过实验部分验证了进波管环境温度下的波数-频率分析。结果表明，该方法对试件具有合理的精度。然而，它仅限于预测线性响应，并且会以保守的方式过度预测热声响应。
Linear thermal-acoustic responses of a composite panel in a progressive wave tube are studied based on wavenumber-frequency analysis in both pre- and post-buckling ranges. The coupled finite element method/boundary element method (FEM/BEM) is developed to study the modal behavior of the panel under thermal environment. The effects of temperature-dependent material property, thermal stresses and initial deflection on the modal behavior are investigated. Wavenumber-frequency analysis is performed to predict the thermal-acoustic responses of the thermally loaded panel under the excitation of a travelling pressure wave. Both unstiffened and stiffened panel have been investigated. As temperature rose, modal frequencies decrease to the minimum values in sequence due to the softening effect of thermal stresses, and then turn to increase mainly due to the stiffening effect of initial deflection, which provides additional stiffness to prevent the minimal modal frequencies drop to zero. Wavenumber-frequency analysis is able to offer a physical explanation of interaction between the excitation and the dynamic behavior of the panel, especially in terms of a filtering effect in the wavenumber domain. The dynamic characteristics of the unstiffened and the stiffened panel under combined thermal and travelling pressure wave excitations are different. Finally, an experiment is carried out to partially validate wavenumber-frequency analysis under ambient temperature in a progressive wave tube. It is demonstrated that the proposed method is of reasonable accuracy for the test article. However, it is limited to predicting linear responses and will over predict the thermal-acoustic responses in a conservative way.
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DOI：
10.1115/1.2889710
发表时间：
1997-04
期刊：
Journal of Vibration and Acoustics
影响因子：
--
作者：
K. D. Murphy;L. Virgin;S. Rizzi
通讯作者：
K. D. Murphy;L. Virgin;S. Rizzi
DOI：
10.25777/wjpj-n563
发表时间：
1995
期刊：
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影响因子：
--
作者：
C. Mei;J. Moorthy
通讯作者：
C. Mei;J. Moorthy
DOI：
10.2514/6.1993-383
发表时间：
1993
期刊：
--
影响因子：
--
作者：
S. Rizzi
通讯作者：
S. Rizzi
DOI：
10.1121/1.4870483
发表时间：
2014-05
期刊：
The Journal of the Acoustical Society of America
影响因子：
--
作者：
Q. Geng;Huan Li;Yueming Li
通讯作者：
Q. Geng;Huan Li;Yueming Li
影响因子：
4.1
作者：
Jean-Mathieu Mencik;M. Ichchou
通讯作者：
Jean-Mathieu Mencik;M. Ichchou