Propagation of flexural waves in inhomogeneous plates exhibiting hysteretic nonlinearity: Nonlinear acoustic black holes

Gusev Vitalyi E.; Ni Chenyin; Lomonosov Alexey; Shen Zhonghua

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Propagation of flexural waves in inhomogeneous plates exhibiting hysteretic nonlinearity: Nonlinear acoustic black holes

机译：弯曲波在显示迟滞非线性的非均质板中的传播：非线性声学黑洞

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Theory accounting for the influence of hysteretic nonlinearity of micro-inhomogeneous material on flexural wave in the plates of continuously varying thickness is developed. For the wedges with thickness increasing as a power law of distance from its edge strong modifications of the wave dynamics with propagation distance are predicted. It is found that nonlinear absorption progressively disappearing with diminishing wave amplitude leads to complete attenuation of acoustic waves in most of the wedges exhibiting black hole phenomenon. It is also demonstrated that black holes exist beyond the geometrical acoustic approximation. Applications include nondestructive evaluation of micro-inhomogeneous materials and vibrations damping. (C) 2015 Elsevier B.V. All rights reserved.

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《Ultrasonics》 |2015年第null期|共10页
作者
Gusev Vitalyi E.; Ni Chenyin; Lomonosov Alexey; Shen Zhonghua;
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正文语种 eng
中图分类超声学;
关键词
Flexural waves; Nonlinear waves; Hysteretic nonlinearity; Acoustic black hole; Nonlinear absorption;

机译：弯曲波非线性波滞后非线性声学黑洞非线性吸收;

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1. Propagation of flexural waves in inhomogeneous plates exhibiting hysteretic nonlinearity: Nonlinear acoustic black holes [J] . Gusev Vitalyi E., Ni Chenyin, Lomonosov Alexey, Ultrasonics . 2015,第Null期

机译：弯曲波在显示迟滞非线性的非均质板中的传播：非线性声学黑洞
2. Propagation of acoustic unipolar pulses and periodic waves in media with quadratic hysteretic nonlinearity and linear viscous dissipation [J] . Radostin A., Nazarov V., Kiyashko S. Communications in Nonlinear Science and Numerical Simulation . 2017,第NOVa期

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7. Slots of power-law profile as acoustic black holes for flexural waves in metallic and composite plates [O] . Bowyer E.P., Krylov Victor V. 2016

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Propagation of flexural waves in inhomogeneous plates exhibiting hysteretic nonlinearity: Nonlinear acoustic black holes

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