Sha Gaofeng
Department of Mechanical and Aerospace Engineering, The Ohio State University, 201 West 19th Avenue, Columbus, Ohio 43210, USA
J Acoust Soc Am. 2018 May;143(5):EL347. doi: 10.1121/1.5037619.
This paper reports an explicit two-point correlation function (TPCF), associated with the mean grain size from a grain size distribution, which can well present the TPCFs of three-dimensional (3D) Voronoi polycrystals with uniform equiaxed grains. Analytical attenuation and scattering models applicable to polycrystals of uniform equiaxed grains of arbitrary symmetry are developed using this explicit TPCF. Additionally, a comparison is drawn between analytical attenuation model and available 3D finite element method (FEM) results in the literature, and it indicates that the analytical attenuation model has excellent agreement with 3D FEM. This work will facilitate the comparison between analytical modeling and 3D FEM.
本文报道了一种与粒度分布中的平均晶粒尺寸相关的显式两点相关函数（TPCF），它能够很好地呈现具有均匀等轴晶粒的三维（3D）Voronoi多晶体的TPCF。利用这种显式TPCF，开发了适用于任意对称的均匀等轴晶粒多晶体的解析衰减和散射模型。此外，还将解析衰减模型与文献中可用的三维有限元方法（FEM）结果进行了比较，结果表明解析衰减模型与三维有限元法具有很好的一致性。这项工作将有助于解析建模与三维有限元法之间的比较。
