Diffraction of shear waves by a nanosized spherical cavity

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作者：
Wang, G.F. [1 ]
机构：
[1] MOE Key Laboratory for Strength and Vibration, Department of Engineering Mechanics, Xi'An Jiaotong University, Xi'an 710049, China
来源：
Journal of Applied Physics | 2008年 / 103卷 / 05期
关键词：
Surface effects become important in the mechanical performances of nanostructured devices and materials; owing to the increasing ratio of surface to bulk volume. In the present paper; the diffraction of shear waves (S -wave) by a nanosized spherical cavity is studied theoretically based on the surface elasticity theory. It is found that when the cavity size reduces to nanometers; surface effects play a significant role in the diffraction of elastic waves. As an example; the surface effects on the dynamic stress concentration around the spherical cavity are discussed in detail. © 2008 American Institute of Physics;
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