Analysis of propagation characteristics of Rayleigh waves in saturated porothermoelastic media

doi:10.16285/j.rsm.2018.2227

CORC > 兰州理工大学 > 兰州理工大学 > 土木工程学院

	Analysis of propagation characteristics of Rayleigh waves in saturated porothermoelastic media
	Zhou, Feng-Xi 1; Liu, Hong-Bo 1; Cai, Yuan-Qiang 2
刊名	Yantu Lixue/Rock and Soil Mechanics
	2020-01-10
卷号	41 期号:1 页码:315-324
关键词	Acoustic wave velocity Diffusion in liquids Elastic waves Elasticity Expansion Porosity Porous materials Rayleigh waves Relaxation time Thermal expansion Thermoelasticity Wave propagation Character attenuation Diffusion characteristics Generalized thermo-elasticity Propagation characteristics Saturated porous medium Thermal expansion coefficients Thermo-physical parameters Wave velocity
ISSN号	10007598
DOI	10.16285/j.rsm.2018.2227
英文摘要	Based on the theory of porous media and the generalized thermoelasticity model, the propagation characteristics of Rayleigh wave (R wave) in saturated porothermoelastic media are studied in this paper. A thermal-fluid-solid elastic wave coupled model of saturated porous medium is established by considering the fluid-solid coupling wave equations for saturated porous medium, continuity equation and the generalised thermoelastic basic equations. By introducing the potential function and combining the boundary conditions of free water permeability and adiabatic, the diffusion characteristic equation of R wave in saturated porous thermoelastic medium is derived theoretically. The effects of thermophysical parameters such as porosity, permeability coefficient, thermal expansion coefficient, initial temperature and relaxation time on the wave velocity and characteristic attenuation of R wave are analyzed by numerical examples. The results show that the increase of porosity causes the decrease of R wave velocity, but results in an increase in its characteristic attenuation. With the increase of the permeability coefficient, the R wave velocity first remains constant, then increases sharply, and finally stabilizes; and its characteristic attenuation first increases and then decreases, and finally tends to be stable. The increase of thermal expansion coefficient causes the increase of R wave velocity, but has no effect on the characteristic attenuation; the increase of initial temperature leads to slight increase of R wave velocity, but has little impact on its characteristic attenuation; the relaxation time has almost no effect on both the velocity and the characteristic attenuation of R wave. © 2020, Science Press. All right reserved.
WOS研究方向	Engineering
语种	中文
出版者	Academia Sinica
WOS记录号	WOS:000546922700035
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/151044]
专题	土木工程学院
作者单位	1.School of Civil Engineering, Lanzhou University of Technology, Lanzhou; Gansu; 730050, China; 2.School of Civil Engineering and Architecture, Zhejiang University of Technology, Hangzhou; Zhejiang; 310014, China
推荐引用方式 GB/T 7714	Zhou, Feng-Xi,Liu, Hong-Bo,Cai, Yuan-Qiang. Analysis of propagation characteristics of Rayleigh waves in saturated porothermoelastic media[J]. Yantu Lixue/Rock and Soil Mechanics,2020,41(1):315-324.
APA	Zhou, Feng-Xi,Liu, Hong-Bo,&Cai, Yuan-Qiang.(2020).Analysis of propagation characteristics of Rayleigh waves in saturated porothermoelastic media.Yantu Lixue/Rock and Soil Mechanics,41(1),315-324.
MLA	Zhou, Feng-Xi,et al."Analysis of propagation characteristics of Rayleigh waves in saturated porothermoelastic media".Yantu Lixue/Rock and Soil Mechanics 41.1(2020):315-324.