Implicit and explicit procedures for the yield vertex non-coaxial theory
文献类型：期刊论文
| 作者 | Yang, Yunming2; Yu, Hai-Sui1; Kong, Lingwei2 |
| 刊名 | COMPUTERS AND GEOTECHNICS
 |
| 出版日期 | 2011 |
| 卷号 | 38期号:5页码:751-755 |
| 关键词 | Non-coaxial models Plasticity Numerical computations |
| ISSN号 | 0266-352X |
| DOI | 10.1016/j.compgeo.2011.03.008 |
| 英文摘要 | The yield vertex non-coaxial model is different from classical elastoplastic models, in that there is an additional plastic strain rate tangential to yield surfaces, as well as the plastic strain rate normal to yield surfaces, when orientations of principal stress change. This feature raises concerns on its finite element implementations. In nonlinear finite element numerical iterations, a large tangential plastic strain rate is likely to make the trial total strain rate direct inside a yield surface, which entails convergence difficulty. Some modifications are introduced on the non-coaxial model itself to make numerical convergence easier in the work published in Yang and Yu (2010) [20]. This paper is an extension of the previous work. Instead of modifying the non-coaxial model itself, this paper concerns the use of finite element explicit procedure, which is suitable for highly discontinuous problems. The simulations of shallow foundation load-settlement responses indicate that the finite element explicit procedure, assisted with a robust and explicit automatic substepping integration scheme of the non-coaxial model, does not encounter numerical difficulty. In addition, the overall trends of implicit and explicit simulations are similar. (C) 2011 Elsevier Ltd. All rights reserved. |
| WOS研究方向 | Computer Science ; Engineering ; Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000292860300015 |
| 出版者 | ELSEVIER SCI LTD |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/3297]  |
| 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.Univ Nottingham, Nottingham Ctr Geomech, Sch Civil Engn 2.Chinese Acad Sci, State Key Lab Geomech & Geotech Engn, Inst Rock & Soil Mech ; |
| 推荐引用方式 GB/T 7714 | Yang, Yunming,Yu, Hai-Sui,Kong, Lingwei. Implicit and explicit procedures for the yield vertex non-coaxial theory[J]. COMPUTERS AND GEOTECHNICS,2011,38(5):751-755. |
| APA | Yang, Yunming,Yu, Hai-Sui,&Kong, Lingwei.(2011).Implicit and explicit procedures for the yield vertex non-coaxial theory.COMPUTERS AND GEOTECHNICS,38(5),751-755. |
| MLA | Yang, Yunming,et al."Implicit and explicit procedures for the yield vertex non-coaxial theory".COMPUTERS AND GEOTECHNICS 38.5(2011):751-755. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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