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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.
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| Source Publication | International Journal of Solids and Structures
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| 2007 | |
| Volume | 44Issue:14-15Pages:4784-4794 |
| ISSN | 0020-7683 |
| Abstract | 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. |
| Keyword | 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 |
| Indexed By | SCI |
| Language | 英语 |
| WOS ID | WOS:000247989700012 |
| WOS Keyword | ELASTIC-WAVES ; SQUIRT ; SCATTERING ; MODEL ; BIOT |
| WOS Research Area | Mechanics |
| WOS Subject | Mechanics |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/33943 |
| Collection | 力学所知识产出(1956-2008) |
| Corresponding Author | Liu, ER (reprint author), Tsing Hua Univ, Dept Math Sci, Beijing 100084, Peoples R China. |
| Recommended Citation 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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