| 王佳乐,韩庆邦,苏娜娜,钱佳文.曲线坐标系下孔隙介质圆柱纵向表面波的传播特性*[J].,2023,42(2):427-433 |
| 曲线坐标系下孔隙介质圆柱纵向表面波的传播特性* |
| Propagation characteristics of longitudinal surface wave in porous media cylinder in curvilinear coordinate system |
| 投稿时间：2022-01-21 修订日期：2023-03-03 |
| 中文摘要: |
| 结合Biot理论在正交曲线坐标系下建立了表面波的频散方程，数值计算得到其频散曲线，研究了孔隙介质圆柱纵向表面波的传播特性。将纵向导波最低模态与表面波进行对比，分析了曲率半径及孔隙参数对表面波频散和衰减的影响。结果表明，当频率足够大时，导波最低模态的频散曲线与表面波近似；在同一频率下，表面波的相速度随曲率半径的增大而增大，随孔隙度的增大而减小；表面波的衰减随孔隙度的增大而增大。 |
| 英文摘要: |
| To research on the propagation characteristics of longitudinal surface wave in porous media cylinder, the dispersion equation of surface wave is established in orthogonal curvilinear coordinate system combined with Biot theory. Through numerical calculation, the dispersion curve has been obtained. The lowest mode of guided wave is compared with surface wave, and the effects of curvature radius and porosity on dispersion and attenuation of surface wave are analyzed. The results show that when the frequency is large enough, the dispersion curve of the lowest mode of guided wave is similar to that of surface wave; At the same frequency, the phase velocity of surface wave increases with curvature radius, decreases with porosity, and the attenuation of surface wave increases with porosity. |
| DOI：10.11684/j.issn.1000-310X.2023.02.027 |
| 中文关键词: 正交曲线坐标系 表面波 孔隙介质 频散特性 |
| 英文关键词: orthogonal curvilinear coordinate system surface wave porous media dispersion |
| 基金项目:国家自然科学基金项目（面上项目，重点项目，重大项目） |
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