Reflection characteristics of plane-S-wave at the free boundary of unsaturated porothermoelastic media
Zhou, Fengxi1,2; Zhang, Ruiling1; Liu, Hongbo1; Yue, Guodong1
2020-01-17
发表期刊JOURNAL OF THERMAL STRESSES
ISSN0149-5739
卷号43期号:5页码:579-593
摘要In the present work, the reflection of plane-S-wave at the free boundary of an unsaturated porothermoelastic medium is studied taking into consideration of the theory of porous media and the generalized thermoelasticity model. Based on the wave equations for an unsaturated porous medium considering thermo-fluid-solid coupling and the boundary conditions, the theoretical expressions of the reflection coefficient of five kinds of reflected waves at the free boundary of the unsaturated porothermoelastic medium, i.e., reflected P-1 wave, reflected P-2 wave, reflected P-3 wave, reflected S wave and reflected thermal wave, are derived by using the classical Helmholtz potential function decomposition method. Then the numerical calculations are used to discuss the variation of the reflection coefficients of each reflected wave with the incident angle of plane-S-wave and the thermophysical parameters such as saturation, thermal expansion coefficient, thermal conductivity, medium temperature and phase-lag of heat flux and gradient of temperature. The results show that the reflection coefficient of each reflected wave is affected by not only the incident angle but also the saturation. The change of thermal expansion coefficient has a significant influence on the reflection coefficient of each reflected wave. The change of medium temperature only affects the reflection coefficient of the reflected P-2 wave, reflected P-3 wave and reflected thermal wave. The change of thermal conductivity, phase-lag of heat flux and phase-lag of gradient of temperature only has a large effect on the reflection coefficient of reflected thermal wave. These conclusions are helpful in the theoretical research and seismic exploration projects.
关键词Unsaturated porous medium thermoelasticity plane-S-wave reflected wave reflection coefficient thermophysical parameters
DOI10.1080/01495739.2019.1711478
收录类别SCI
语种英语
资助项目National Natural Science Foundation of China[51978320][11962016]
WOS研究方向Thermodynamics ; Mechanics
WOS类目Thermodynamics ; Mechanics
WOS记录号WOS:000509318700001
出版者TAYLOR & FRANCIS INC
引用统计
被引频次:2[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符https://ir.lut.edu.cn/handle/2XXMBERH/64306
专题土木工程学院
通讯作者Liu, Hongbo
作者单位1.Lanzhou Univ Technol, Sch Civil Engn, Lanzhou 730050, Gansu, Peoples R China
2.Lanzhou Univ Technol, Minist Educ, Western Engn Res Ctr Disaster Mitigat Civil Engn, Lanzhou, Peoples R China
第一作者单位兰州理工大学
通讯作者单位兰州理工大学
第一作者的第一单位兰州理工大学
推荐引用方式
GB/T 7714
Zhou, Fengxi,Zhang, Ruiling,Liu, Hongbo,et al. Reflection characteristics of plane-S-wave at the free boundary of unsaturated porothermoelastic media[J]. JOURNAL OF THERMAL STRESSES,2020,43(5):579-593.
APA Zhou, Fengxi,Zhang, Ruiling,Liu, Hongbo,&Yue, Guodong.(2020).Reflection characteristics of plane-S-wave at the free boundary of unsaturated porothermoelastic media.JOURNAL OF THERMAL STRESSES,43(5),579-593.
MLA Zhou, Fengxi,et al."Reflection characteristics of plane-S-wave at the free boundary of unsaturated porothermoelastic media".JOURNAL OF THERMAL STRESSES 43.5(2020):579-593.
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