| 刘颖,刘凯欣,李荣.正交各向异性含液饱和多孔介质中应力波的传播[J].计算力学学报,2003,20(4):434~439 |
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| 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 |
| 修订日期：2001-11-20 |
| DOI：10.7511/jslx20034082 |
| 中文关键词: 正交各向异性 含液饱和多孔介质 应力波 传播特性 动态渗透率 复特征方程 波速 衰减 频散 |
| 英文关键词:orthotropic,porous media,stress wave,dispersion,atten uation |
| 基金项目:国家自然科学基金 (1 9832 0 1 0，1 0 0 2 52 1 2 )资助项目 |
| 刘颖 刘凯欣 李荣 |
| [1]大连理工大学工业装备及结构分析国家重点实验室，大连116024 [2]北京大学力学与科学工程系100871 |
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| 中文摘要: |
| 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武，计算了频散曲线和衰减曲线，并讨论了各类应力波之间的耦合关系及介质的各向异性对应力波传播的影响． |
| 英文摘要: |
| Based on the Biot's theory of porous media, the characteri stic of stress wave propagation in the orthotropic fluid-saturated media was st udied. The com plex characteristic equations for stress wave propagation in the whole frequency domain were derived. The analytical expressions for wave speeds and attenuation s were presented. The curves of dispersion and attenuation were illustrated. The co upling relations among three quasi-body waves and the effects of orthotropy of the medium on the stress wave propagation were discussed. |
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