Numerical Analysis of the Rayleigh Wave Dispersion Due to Surface Roughness
Numerical Analysis of the Rayleigh Wave Dispersion Due to Surface Roughness
复制标题
表面粗糙度引起的瑞利波色散的数值分析
DOI：
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复制
发表时间：
2004
期刊：
影响因子：
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通讯作者：
S. Bondok,
中科院分区：
文献类型：
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作者：
W. Hassan;M. Blodgett;S. Bondok,
最近对使用瑞利型表面声波测量喷丸强化引起的表面残余压应力等应用的兴趣，使表面粗糙度可能对此类测量产生的不利影响成为人们关注的焦点。表面粗糙度产生测量中使用的瑞利波的显著色散。因此，准确理解表面粗糙度对瑞利波色散的影响对于这种应用和其他表面粗糙度是用于生产零件的制造过程的自然副产品的应用至关重要。本文利用有限差分波传播模拟软件Wave2000Pro对二维随机粗糙表面上瑞利面波的频散进行了数值研究。首先对模型离散化引起的波频散进行了研究，以确定模型的精度。然后利用Wave 2000Pro对瑞利波传播的频散进行了分析。
Recent interest in applications like the measurement of compressive surface residual stresses due to shot peening using Rayleigh type surface acoustic waves have brought into the spot light the adverse effects surface roughness might have on such measurements. Surface roughness produces significant dispersion of the Rayleigh wave used in the measurements. Therefore an accurate understanding of the effect of surface roughness on the dispersion of Rayleigh waves is of crucial importance for this application and others in which surface roughness is a natural by‐product of the manufacturing processes used to produce the part. In this paper, the dispersion of Rayleigh surface wave on a 2D‐randomly‐rough surface is studied numerically using Wave2000Pro, finite difference wave propagation simulation software. First the dispersion of the wave due to the discretization of the model is investigated to establish the accuracy of the model. Wave 2000Pro is then used to analyze the dispersion of Rayleigh wave propagati...