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首页> 外文期刊>Journal of Computational Physics >A numerical method for predicting Rayleigh surface wave velocity in anisotropic crystals
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A numerical method for predicting Rayleigh surface wave velocity in anisotropic crystals

机译:一种预测各向异性晶体瑞利表面波速度的数值方法

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AbstractA numerical method was developed for calculating the Rayleigh Surface Wave (RSW) velocity in arbitrarily oriented single crystals in 360 degrees of propagation. This method relies on the results from modern analysis of RSW behavior with the Stroh formalism to restrict the domain in which to search for velocities by first calculating the limiting velocity. This extension of existing numerical methods also leads to a natural way of determining both the existence of the RSW as well as the possibility of encountering a pseudo-surface wave. Furthermore, the algorithm is applied to the calculation of elastic properties from measurement of the surface wave velocity in multiple different directions on a single crystal sample. The algorithm was tested with crystal symmetries and single crystal elastic moduli from literature. It was found to be very robust and efficient in calculating RSW velocity curves in all cases.Highlights?Efficient umerical method for calculating the surface wave velocities in any direction on an arbitrarily oriented crystal.?Sensitivity of wave velocity to different parameterizations of elastic material parameters.
机译:<![cdata [ Abstract 开发了一个数字方法,用于在360多个传播中计算任意取向的单晶的瑞利表面波(RSW)速度。该方法依赖于RSW行为与STROH形式主义的现代分析结果,以限制通过首先计算限制速度来搜索速度的域。该现有数值方法的扩展还导致确定RSW的存在的自然方式以及遇到伪表面波的可能性。此外,算法应用于从单晶样品上的多个不同方向上的表面波速度的测量计算的弹性性质的计算。用晶体对称和来自文献的单晶弹性模算法测试算法。发现在所有情况下计算RSW速度曲线时被发现非常稳健和有效。 突出显示 任意方向上的表面波速度在任意取向晶体中的表面波速度计算的高效Umolic方法。 label> 波速对不同参数参数的不同参数化的敏感性。

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