Effects of thermoelastic coupling on the propagation of body waves in saturated porous media

doi:10.13722/j.cnki.jrme.2019.0848

CORC > 兰州理工大学 > 兰州理工大学 > 土木工程学院

	Effects of thermoelastic coupling on the propagation of body waves in saturated porous media
	Liu, Hongbo 2; Zhou, Fengxi 1,2; Zhang, Ruiling 2; Yue, Guodong 2
刊名	Yanshilixue Yu Gongcheng Xuebao/Chinese Journal of Rock Mechanics and Engineering
	2020-06-15
卷号	39 页码:2693-2702
关键词	Acoustic wave velocity Expansion Heat flux Porosity Porous materials Shear waves Thermal expansion Thermal gradients Thermoelasticity Wave equations Wave propagationCharacteristic equation Momentum balance equations Propagation characteristics Saturated porous media Saturated porous medium Thermal expansion coefficients Thermal physical parameters Thermoelastic couplings
ISSN号	10006915
DOI	10.13722/j.cnki.jrme.2019.0848
英文摘要	Based on the research results of saturated porous medium and considering the influence of thermal effect, the propagation characteristics of body waves in saturated porothermoelastic medium are studied in this paper. The thermoelastic wave equations are established by means of thermal coupling momentum balance equation and seepage continuity equation in porothermoelastic medium and the dual-phase-lag model. By introducing potential functions, the dispersivity characteristic equations of body waves in saturated porothermoelastic medium are derived theoretically. The velocity variation of four body waves(P1 wave, P2 wave, S wave and thermal wave) with thermal physical parameters such as frequency, porosity, permeability coefficient, thermal expansion coefficient, thermal conductivity and phase-lag of heat flux and temperature gradient is analyzed with numerical examples. The results show that the increase of thermal expansion coefficient will cause the increase of wave velocity of P1 wave and P2 wave and the decrease of wave velocity of thermal wave. The increase of thermal conductivity and phase-lag of temperature gradient will only cause the increase of wave velocity of thermal wave, while the increase of phase-lag of heat flux only causes the decrease of wave velocity of thermal wave. The variations of frequency, porosity and permeability coefficient have a great influence on the wave velocity of various thermoelastic waves, which cannot be ignored. © 2020, Science Press. All right reserved.
语种	中文
出版者	Academia Sinica
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/132361]
专题	土木工程学院
作者单位	1.Engineering Research Center of Disaster Mitigation in Civil Engineering of Ministry of Education, Lanzhou University of Technology, Lanzhou; 730050, China 2.School of Civil Engineering, Lanzhou University of Technology, Lanzhou; 730050, China;
推荐引用方式 GB/T 7714	Liu, Hongbo,Zhou, Fengxi,Zhang, Ruiling,et al. Effects of thermoelastic coupling on the propagation of body waves in saturated porous media[J]. Yanshilixue Yu Gongcheng Xuebao/Chinese Journal of Rock Mechanics and Engineering,2020,39:2693-2702.
APA	Liu, Hongbo,Zhou, Fengxi,Zhang, Ruiling,&Yue, Guodong.(2020).Effects of thermoelastic coupling on the propagation of body waves in saturated porous media.Yanshilixue Yu Gongcheng Xuebao/Chinese Journal of Rock Mechanics and Engineering,39,2693-2702.
MLA	Liu, Hongbo,et al."Effects of thermoelastic coupling on the propagation of body waves in saturated porous media".Yanshilixue Yu Gongcheng Xuebao/Chinese Journal of Rock Mechanics and Engineering 39(2020):2693-2702.