Wave propagation and the frequency domain Green's functions in viscoelastic Biot/squirt (BISQ) media

doi:10.1016/j.ijsolstr.2006.12.001

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	Wave propagation and the frequency domain Green's functions in viscoelastic Biot/squirt (BISQ) media
	Yang DH(杨顶辉); Shen YQ(申义庆); Liu ER; Liu, ER (reprint author), Tsing Hua Univ, Dept Math Sci, Beijing 100084, Peoples R China.
发表期刊	International Journal of Solids and Structures
	2007
卷号	44 期号:14-15 页码:4784-4794
ISSN	0020-7683
摘要	In this paper, we examine the characteristics of elastic wave propagation in viscoelastic porous media, which contain simultaneously both the Biot-flow and the squirt-flow mechanisms (BISQ). The frequency-domain Green's functions for viscoelastic BISQ media are then derived based on the classic potential function methods. Our numerical results show that S-waves are only affected by viscoelasticity, but not by squirt-flows. However, the phase velocity and attenuation of fast P-waves are seriously influenced by both viscoelasticity and squirt-flows; and there exist two peaks in the attenuation-frequency variations of fast P-waves. In the low-frequency range, the squirt-flow characteristic length, not viscoelasticity, affects the phase velocity of slow P-waves, whereas it is opposite in the high-frequency range. As to the contribution of potential functions of two types of compressional waves to the Green's function, the squirt-flow length has a small effect, and the effects of viscoelastic parameter are mainly in the higher frequency range. Crown Copyright (C) 2006 Published by Elsevier Ltd. All rights reserved.
关键词	Biot/squirt (Bisq) Model Poroelasticity Viscoelastic Media Wave Propagation Green's Function Elastic-waves Squirt Scattering Model Biot
DOI	10.1016/j.ijsolstr.2006.12.001
收录类别	SCI
语种	英语
WOS记录号	WOS:000247989700012
关键词[WOS]	ELASTIC-WAVES ; SQUIRT ; SCATTERING ; MODEL ; BIOT
WOS研究方向	Mechanics
WOS类目	Mechanics
引用统计	被引频次：7[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/33943
专题	力学所知识产出(1956-2008)
通讯作者	Liu, ER (reprint author), Tsing Hua Univ, Dept Math Sci, Beijing 100084, Peoples R China.
推荐引用方式 GB/T 7714	Yang DH,Shen YQ,Liu ER,et al. Wave propagation and the frequency domain Green's functions in viscoelastic Biot/squirt (BISQ) media[J]. International Journal of Solids and Structures,2007,44,14-15,:4784-4794.
APA	杨顶辉,申义庆,Liu ER,&Liu, ER .(2007).Wave propagation and the frequency domain Green's functions in viscoelastic Biot/squirt (BISQ) media.International Journal of Solids and Structures,44(14-15),4784-4794.
MLA	杨顶辉,et al."Wave propagation and the frequency domain Green's functions in viscoelastic Biot/squirt (BISQ) media".International Journal of Solids and Structures 44.14-15(2007):4784-4794.

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