Some theoretical and numerical observations on scattering of Rayleigh waves in media containing shallow rectangular cavities
文献类型：期刊论文
| 作者 | Chai, Hua-You1,2; Wei, Chang-Fu1; Goh, Siang-Huat2; Phoon, Kok-Kwang2 |
| 刊名 | JOURNAL OF APPLIED GEOPHYSICS
 |
| 出版日期 | 2012 |
| 卷号 | 83页码:107-119 |
| 关键词 | Scattered waves Surface waves Betti-Rayleigh reciprocity theorem Thin layer method Green's function Cavity |
| ISSN号 | 0926-9851 |
| DOI | 10.1016/j.jappgeo.2012.05.005 |
| 英文摘要 | Based on the Betti-Rayleigh reciprocity theorem and the thin layer method (TLM), the discrete analytical displacement expression of Rayleigh waves scattered from heterogeneities in layered half spaces are presented. A parametric study on the scattering of Rayleigh waves is conducted for homogeneous half spaces with rectangular cavities present in the far field. For cavities that are long in the direction of wave propagation, the theory of Lamb waves in free plates is used to explain the propagation behavior of the waves above cavities. Some numerical simulations are used to verify the analyses. In order to establish the relationship between the depth of cavity and the wavelength, the spectra in the frequency domain are converted into ones in the wavelength domain. Effects of wave scattering on the spectral pattern in the offset-wavelength domain are investigated. The results show that the scattering of Rayleigh waves is not only related to the dimensionless location parameters h(t)/lambda(R) and h/lambda(R) but also omega(2), where h(t), h. lambda(R) and omega denote the depth and the height of the cavity, the wavelength of Rayleigh waves and the angular frequency, respectively. For long cavities, the near and the far faces of cavity can be roughly located from the "ripples" of the spectra and changes in the energy in the offset-wavelength domain and the depth of the cavity can be estimated from the critical wavelength associated with the onset of disturbance in the spectra above the cavity. (c) 2012 Elsevier B.V. All rights reserved. |
| WOS研究方向 | Geology ; Mining & Mineral Processing |
| 语种 | 英语 |
| WOS记录号 | WOS:000306455000013 |
| 出版者 | ELSEVIER SCIENCE BV |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/3357]  |
| 专题 | 岩土力学所知识全产出_期刊论文 国家重点实验室知识产出_期刊论文 |
| 作者单位 | 1.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn 2.Natl Univ Singapore, Dept Civil & Environm Engn ; |
| 推荐引用方式 GB/T 7714 | Chai, Hua-You,Wei, Chang-Fu,Goh, Siang-Huat,et al. Some theoretical and numerical observations on scattering of Rayleigh waves in media containing shallow rectangular cavities[J]. JOURNAL OF APPLIED GEOPHYSICS,2012,83:107-119. |
| APA | Chai, Hua-You,Wei, Chang-Fu,Goh, Siang-Huat,&Phoon, Kok-Kwang.(2012).Some theoretical and numerical observations on scattering of Rayleigh waves in media containing shallow rectangular cavities.JOURNAL OF APPLIED GEOPHYSICS,83,107-119. |
| MLA | Chai, Hua-You,et al."Some theoretical and numerical observations on scattering of Rayleigh waves in media containing shallow rectangular cavities".JOURNAL OF APPLIED GEOPHYSICS 83(2012):107-119. |
入库方式： OAI收割
来源：武汉岩土力学研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。