Khurana P, Boeckx L, Lauriks W, Leclaire P, Dazel O, Allard J F
Laboratorium voor Akoestiek en Thermische Fysica, Katholieke Universiteit Leuven, Heverlee, Belgium.
J Acoust Soc Am. 2009 Feb;125(2):915-21. doi: 10.1121/1.3035840.
A description of wave propagation in transversely isotropic porous materials saturated by air with a recent reformulation of the Biot theory is carried out. The description is performed in terms of a transfer matrix method (TMM). The anisotropy is taken into account in the mechanical parameters (elastic constants) and in the acoustical parameters (flow resistivity, tortuosity, and characteristic lengths). As an illustration, the normal surface impedance at normal and oblique incidences of transversely isotropic porous layers is predicted. Comparisons are performed with experimental results.
利用最近重新表述的比奥理论，对空气饱和的横观各向同性多孔材料中的波传播进行了描述。该描述采用传递矩阵法（TMM）进行。在力学参数（弹性常数）和声学参数（流阻、曲折度和特征长度）中考虑了各向异性。作为示例，预测了横观各向同性多孔层在垂直入射和斜入射时的法向表面阻抗，并与实验结果进行了比较。
