A Coupled Elastoplastic Damage Model for Clayey Rock and Its Numerical Implementation and Validation
文献类型：期刊论文
| 作者 | Jia, Shanpo4,5; Zhao, Zhenyun3; Wu, Guojun2; Wu, Bisheng1; Wen, Caoxuan3 |
| 刊名 | GEOFLUIDS
 |
| 出版日期 | 2020-03-20 |
| 卷号 | 2020页码:14 |
| ISSN号 | 1468-8115 |
| DOI | 10.1155/2020/9853782 |
| 英文摘要 | This paper presents a new constitutive model for describing the strain-hardening and strain-softening behaviors of clayey rock. As the conventional Mohr-Coulomb (CMC) criterion has its limitation in the tensile shear region, a modified Mohr-Coulomb (MMC) criterion is proposed for clayey rock by considering the maximal tensile stress criterion. Based on the results of triaxial tests, a coupled elastoplastic damage (EPD) model, in which the elastic and plastic damage laws are introduced to describe the nonlinear hardening and softening behaviors, respectively, is developed so as to fully describe the mechanical behavior of clayey rock. Starting from the implicit Euler integration algorithm, the stress-strain constitutive relationships and their numerical formulations are deduced for finite element implementation in the commercial package ABAQUS where a user-defined material subroutine (UMAT) is provided for clayey rock. Finally, the proposed model is used to simulate the triaxial tests and the results validate the proposed model and numerical implementation. |
| 资助项目 | Open Research Fund of State Key Laboratory of Geomechanics and Geotechnical Engineering[Z013007] ; Oil and Gas Reservoir Geology and Exploitation[PLN1507] ; Natural Science Foundation of Hubei Province[2015CFB194] ; National Natural Science Foundation of China[41102182] |
| WOS研究方向 | Geochemistry & Geophysics ; Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000522956000001 |
| 出版者 | WILEY-HINDAWI |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/23843]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Jia, Shanpo |
| 作者单位 | 1.Tsinghua Univ, State Key Lab Hydrosci & Engn, Dept Hydraul Engn, Beijing 100084, Peoples R China 2.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Hubei, Peoples R China 3.Yangtze Univ, Sch Urban Construct, Jingzhou 434023, Hubei, Peoples R China 4.Key Lab Oil & Gas Reservoir & Underground Gas Sto, Daqing 163318, Peoples R China 5.Northeast Petr Univ, Inst Unconvent Oil & Gas, Daqing 163318, Peoples R China |
| 推荐引用方式 GB/T 7714 | Jia, Shanpo,Zhao, Zhenyun,Wu, Guojun,et al. A Coupled Elastoplastic Damage Model for Clayey Rock and Its Numerical Implementation and Validation[J]. GEOFLUIDS,2020,2020:14. |
| APA | Jia, Shanpo,Zhao, Zhenyun,Wu, Guojun,Wu, Bisheng,&Wen, Caoxuan.(2020).A Coupled Elastoplastic Damage Model for Clayey Rock and Its Numerical Implementation and Validation.GEOFLUIDS,2020,14. |
| MLA | Jia, Shanpo,et al."A Coupled Elastoplastic Damage Model for Clayey Rock and Its Numerical Implementation and Validation".GEOFLUIDS 2020(2020):14. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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