正交各向异性含液饱和多孔介质中应力波的传播

Stress wave propagation in orthotropic fluid-saturated porous media

基于 Biot的孔隙介质理论 ,研究了正交各向异性含液饱和多孔介质中应力波的传播特性。本文引入动态渗透率 ,导出了整个实频域内应力波传播的复特征方程及其解析解 ,给出了各种应力波成分的波速和衰减的解析表达式 ,计算了频散曲线和衰减曲线 。

Based on the Blot's theory of porous media, the characteristic of stress wave propagation in the orthotropic fluid-saturated media was studied. The complex characteristic equations for stress wave propagation in the whole frequency domain were derived. The analytical expressions for wave speeds and attenuations were presented. The curves of dispersion and attenuation were illustrated. The coupling relations among three quasi-body waves and the effects of orthotropy of the medium on the stress wave propagation were discussed.