Yield criterion and elasto-plastic damage constitutive model for frozen sandy soil
文献类型：期刊论文
| 作者 | Lai Yuanming; Jin Long; Chang Xiaoxiao |
| 刊名 | INTERNATIONAL JOURNAL OF PLASTICITY
 |
| 出版日期 | 2009-06-01 |
| 卷号 | 25期号:6页码:1177-1205 |
| 关键词 | Frozen sandy soil Pressure melting Yield function Cross anisotropic damage Elasto-plastic damage constitutive model |
| ISSN号 | 0749-6419 |
| DOI | 10.1016/j.ijplas.2008.06.010 |
| 通讯作者 | Lai Yuanming(ymlai@lzb.ac.cn) |
| 英文摘要 | A series of triaxial compression tests was carried out on a frozen sandy soil under confining pressures of 0-18 MPa at -6 degrees C. The experimental results indicate that, the strength of frozen sandy soil increases versus the increase in the confining pressures when sigma(3) <= 3 MPa, but decreases when sigma(3) > 3 MPa. This phenomenon is called the strengthening and weakening effects of confining pressures. A yield function, considering both effects, is proposed using the experimental method according to Drucker's postulate, and the mathematical expression of the hardening parameter, which can describe the softening and hardening phenomenon, is provided. An elasto-plastic constitutive model for frozen sandy soil is developed. Based on the continuum damage theory, the cross anisotropic damage variables are deduced and their change regularities are investigated. Then the elasto-plastic damage constitutive model is proposed by introducing damage variables into elasto-plastic constitutive model. The validity of the model is verified by comparing its modeling results with experimental results obtained from triaxial tests. It is found that, this model can predict the deformation regularity of frozen soil exactly. It can simulate the stress-strain process under high confining pressures when pressure melting phenomena appear especially well. (C) 2008 Elsevier Ltd. All rights reserved. |
| 收录类别 | SCI |
| WOS关键词 | SUBLOADING SURFACE MODEL ; STRAIN RATE ; MECHANICS ; PLASTICITY ; EVOLUTION ; STRENGTH ; BEHAVIOR |
| WOS研究方向 | Engineering ; Materials Science ; Mechanics |
| WOS类目 | Engineering, Mechanical ; Materials Science, Multidisciplinary ; Mechanics |
| 语种 | 英语 |
| WOS记录号 | WOS:000265998800009 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2556271 |
| 专题 | 寒区旱区环境与工程研究所 |
| 通讯作者 | Lai Yuanming |
| 作者单位 | Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, State Key Lab Frozen Soil Engn, Lanzhou 730000, Peoples R China |
| 推荐引用方式 GB/T 7714 | Lai Yuanming,Jin Long,Chang Xiaoxiao. Yield criterion and elasto-plastic damage constitutive model for frozen sandy soil[J]. INTERNATIONAL JOURNAL OF PLASTICITY,2009,25(6):1177-1205. |
| APA | Lai Yuanming,Jin Long,&Chang Xiaoxiao.(2009).Yield criterion and elasto-plastic damage constitutive model for frozen sandy soil.INTERNATIONAL JOURNAL OF PLASTICITY,25(6),1177-1205. |
| MLA | Lai Yuanming,et al."Yield criterion and elasto-plastic damage constitutive model for frozen sandy soil".INTERNATIONAL JOURNAL OF PLASTICITY 25.6(2009):1177-1205. |
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来源：寒区旱区环境与工程研究所
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