Guided wave propagation in rotating functionally graded annular plates
Guided wave propagation in rotating functionally graded annular plates
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旋转功能梯度环形板中的导波传播
DOI：
10.1007/s00707-016-1752-9
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发表时间：
2017-03
期刊：
影响因子：
2.7
通讯作者：
Dong Liang Xiao
中科院分区：
文献类型：
--
作者：
Chunlei Li;Qiang Han;Yijie Liu;Dong Liang Xiao
研究了旋转功能梯度材料（FGM）环形板中弹性导波的传播。假设材料特性沿径向沿着连续变化。推导了考虑初始环向效应、离心效应和Coriolis效应的环板弹性动力学方程，并将波动有限元法推广到用3D-Chebyshev谱元模拟与旋转有关的波动。首先，计算了直杆中的波动特性，并与Rayleigh-Ritz方法进行了比较。然后，考虑了不同材料梯度指数的功能梯度环形板中的波的传播，结果表明，指数有很大的影响波动特性。利用横截面的轮廓线，可以清楚地识别出板中的传播波模式。此外，还讨论了旋转对波传播的影响，结果表明，类拉伸波和类剪切波在低频时对旋转非常敏感，而弯曲波对旋转不敏感。此外，还发现了FGM环板中存在的曲线转向现象，分析了材料梯度指数和转速对曲线转向的影响，指出了相对临界频率的变化规律。
Elastic guided wave propagation in a rotating functionally graded material (FGM) annular plate is presented in this paper. The material properties are assumed to vary continuously along the radial direction. The elastodynamic equation of annular plates which take into account initial hoop, centrifugal and Coriolis effects is derived, and the wave finite element method is extended to model wave motion related to rotation with 3D-Chebyshev spectral elements. Firstly, wave properties in a straight bar are computed and compared to that of the Rayleigh–Ritz method. Then, wave propagation in the FGM annular plate with various material gradient indexes is considered and the results indicate that the index has large influence on wave characteristics. With contour profiles of transverse sections, propagating wave modes in the plate can be identified distinctly. Besides, the effects of rotation on wave propagation are discussed, which show that the extensional-like and shearing-like wave modes are very sensitive to the rotation at low frequencies but the flexural are not. In addition, the curve veering phenomenon existing in FGM annular plates is also found, which analyzes the influences of material gradient index and rotating speed and points out the variations in the relative critical frequencies.
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DOI：
10.1007/s00707-016-1578-5
发表时间：
2016-03
期刊：
Acta Mehanica
影响因子：
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作者：
Chunlei Li;Qiang Han;Yijie Liu
通讯作者：
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影响因子：
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作者：
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影响因子：
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通讯作者：
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影响因子：
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作者：
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通讯作者：
Qu, JM
DOI：
10.1299/kikaia.57.603
发表时间：
1991-03
期刊：
Transactions of the Japan Society of Mechanical Engineers. A
影响因子：
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作者：
順二 谷;直 大好
通讯作者：
順二 谷;直 大好