随机复合材料动态质量密度的估计。

On the estimation of dynamic mass density of random composites.

机构信息

Field of Theoretical and Applied Mechanics, Sibley School of Mechanical and Aerospace Engineering, Cornell University, Ithaca, New York 14853, USA.

出版信息

J Acoust Soc Am. 2012 Aug;132(2):615-20. doi: 10.1121/1.4730974.

DOI:10.1121/1.4730974

PMID:22894183

Abstract

The dynamic effective mass density and bulk modulus of an inhomogeneous medium at low frequency limit are discussed. Random configurations in a variety of two-dimensional physical contexts are considered. In each case, effective dynamic mass density and bulk modulus are calculated based on eigenmode matching theory. The results agree with those provided by Martin et al. [J. Acoust. Soc. Am. 128, 571-577 (2010)] obtained from effective wavenumber method.

摘要

讨论了低频极限下非均匀介质的动态有效质量密度和体积弹性模量。考虑了各种二维物理环境中的随机配置。在每种情况下，基于本征模匹配理论计算了有效动态质量密度和体积弹性模量。结果与 Martin 等人[J. Acoust. Soc. Am. 128, 571-577 (2010)]从有效波数方法得到的结果一致。