Propagation and scattering of SH waves in non-homogeneous unsaturated half-space with a circular cavity

被引：5

作者：

Qu, Zhen ^{[1
]}

Ren, Dawei ^{[1
]}

机构：

[1] Xian Univ Technol, Sch Sci, 710054, Xian, Peoples R China

来源：

MECHANICS OF MATERIALS | 2022年 / 169卷

关键词：

Unsaturated medium; Inhomogeneous half-space; SH wave; Dynamic stress concentration; POROUS-MEDIA; INTERFACE; SOIL;

D O I：

10.1016/j.mechmat.2022.104327

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

An SH wave scattering problem in an inhomogeneous, unsaturated medium with a circular cavity is investigated. The material parameters are assumed to vary exponentially, and a thorough analysis of the basic solution of the SH wave governing equation in an inhomogeneous, unsaturated half-space is performed. The gradient coefficient is introduced to characterize the inhomogeneity of the medium. Drawing on the image method and coordinate transformation method leads to a further discussion of SH wave scattering and dynamic stress concentration in an inhomogeneous, unsaturated half-space with a circular cavity. The influence of the gradient coefficient and saturation on the dynamic stress concentration factor is discussed. The results of the present research can provide theoretical guidance for tunnel engineering and nondestructive evaluation of underground construction.

引用

页数：11

共 25 条

[1] Extended precise integration solution to layered transversely isotropic unsaturated poroelastic media under harmonically dynamic loads [J].

Ai, Zhi Yong ;

Ye, Zi .

ENGINEERING ANALYSIS WITH BOUNDARY ELEMENTS, 2021, 122 :21-34

[2] 3D dynamic responses of a multi-layered transversely isotropic saturated half-space under concentrated forces and pore pressure [J].

Ba, Zhenning ;

Wu, Mengtao ;

Liang, Jianwen .

APPLIED MATHEMATICAL MODELLING, 2020, 80 :859-878

[3] PROPAGATION OF ELASTIC WAVES IN UNCONSOLIDATED UNSATURATED GRANULAR MEDIUMS [J].

BRUTSAERT, W .

JOURNAL OF GEOPHYSICAL RESEARCH, 1964, 69 (02) :243-+

[4]

Cao X., 2012, PHIL MAG LETT, P1

[5] A mixture theory analysis for the surface-wave propagation in an unsaturated porous medium [J].

Chen, Weiyun ;

Xia, Tangdai ;

Hu, Wentao .

INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES, 2011, 48 (16-17) :2402-2412

[6] Numerical modelling of wave propagation in anisotropic soil using a displacement unit-impulse-response-based formulation of the scaled boundary finite element method [J].

Chen, Xiaojun ;

Birk, Carolin ;

Song, Chongmin .

SOIL DYNAMICS AND EARTHQUAKE ENGINEERING, 2014, 65 :243-255

[7] Transverse response of underground cavities and pipes to incident SV waves [J].

Davis, CA ;

Lee, VW ;

Bardet, JP .

EARTHQUAKE ENGINEERING & STRUCTURAL DYNAMICS, 2001, 30 (03) :383-410

[8] Dynamic response of a non-circular lined tunnel with visco-elastic imperfect interface in the saturated poroelastic medium [J].

Fang, Xue-Qian ;

Jin, He-Xin .

COMPUTERS AND GEOTECHNICS, 2017, 83 :98-105

[9] Compressional and shear wave intrinsic attenuation and velocity in partially saturated soils [J].

Ghasemzadeh, Hasan ;

Abounouri, Amir Ali .

SOIL DYNAMICS AND EARTHQUAKE ENGINEERING, 2013, 51 :1-8

[10]

[刘洪波 Liu Hongbo], 2016, [振动与冲击, Journal of Vibration and Shock], V35, P36

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