A rectangular-grid lattice spring model for modeling elastic waves in Poisson's solids
文献类型：期刊论文
| 作者 | Li, Qingqing1; Zhang, Qingchen2; Chen, Hanming3; Zhou, Hui3; Xia, Muming3 |
| 刊名 | GEOPHYSICS
 |
| 出版日期 | 2018-03-01 |
| 卷号 | 83期号:2页码:T69-T86 |
| ISSN号 | 0016-8033 |
| DOI | 10.1190/GEO2016-0414.1 |
| 英文摘要 | The lattice spring model (LSM) combined with the velocity Verlet algorithm is a newly developed scheme for modeling elastic wave propagation in solid media. Unlike conventional wave equations, LSM is established on the basis of micromechanics of the subsurface media, which enjoys better dynamic characteristics of elastic systems. We develop a rectangular-grid LSM scheme for elastic waves simulation in Poisson's solids, and the direction-dependent elastic constants are deduced to keep the isotropy of the discrete grid. The stability condition and numerical dispersion properties of LSM are discussed and compared with other numerical methods. The 2D and 3D numerical simulations are carried out using the rectangular-grid LSM, as well as the second- and fourth-order accuracy staggered finite-difference method (FDM). Wavefields obtained by LSM are fairly similar with those by analytical solution and FDM, which demonstrates the correctness of the proposed scheme and its capability of modeling elastic wave propagation in heterogeneous media. Moreover, we perform plane P-wave simulation through a semi-infinite cavity model via LSM and FDM, the recorded wavefield snapshots indicate that our proposed rectangular-grid LSM obtains more reasonable wavefield details compared with those of FDM, especially in media with high compliance and structure complexity. Our main contribution lies in offering an alternative simulation scheme for modeling elastic wave propagation in media with some kinds of complexities, which conventional FDM may fail to simulate. |
| 资助项目 | National Natural Science Foundation of China[41630314] ; National Key Science and Technology Program[2016ZX05010-001] ; New Geophysical Technology and Method Project of Deep and Unconventional Seismic of the China National Petroleum Corporation[2016A-3302] |
| WOS研究方向 | Geochemistry & Geophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000443595400008 |
| 出版者 | SOC EXPLORATION GEOPHYSICISTS |
| 源URL | [http://202.127.146.157/handle/2RYDP1HH/5698]  |
| 专题 | 中国科学院武汉植物园 |
| 通讯作者 | Xia, Muming |
| 作者单位 | 1.China Univ Petr East China, Sch Geosci, Qingdao, Peoples R China 2.Chinese Acad Sci, Inst Geodesy & Geophys, Ctr Computat & Explorat Geophys, Wuhan, Hubei, Peoples R China 3.China Univ Petr, CNPC Key Lab Geophys Explorat, State Key Lab Petr Resources & Prospecting, Beijing, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Qingqing,Zhang, Qingchen,Chen, Hanming,et al. A rectangular-grid lattice spring model for modeling elastic waves in Poisson's solids[J]. GEOPHYSICS,2018,83(2):T69-T86. |
| APA | Li, Qingqing,Zhang, Qingchen,Chen, Hanming,Zhou, Hui,&Xia, Muming.(2018).A rectangular-grid lattice spring model for modeling elastic waves in Poisson's solids.GEOPHYSICS,83(2),T69-T86. |
| MLA | Li, Qingqing,et al."A rectangular-grid lattice spring model for modeling elastic waves in Poisson's solids".GEOPHYSICS 83.2(2018):T69-T86. |
入库方式： OAI收割
来源：武汉植物园
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