IMPLICIT INTEGRATION ALGORITHM OF ELASTPLASTIC CONSTITUTIVE RELATION FOR COHESIONLESS-FRICTIONAL GEOMATERIAL
文献类型：会议论文
| 作者 | Yuan, F. F.1; Zhan, Y. G.1; Luan, M. T.2,3 |
| 出版日期 | 2008 |
| 会议日期 | JUL 06-11, 2008 |
| 会议地点 | Vancouver, CANADA |
| 关键词 | linear elastic perfectly plastic Drucker-Prager yield criterion implicit integration algorithm of constitutive relation cohesionless-frictional geomaterial |
| 页码 | 797 |
| 英文摘要 | The linear elastic perfectly plastic model based on Drucker-Prager yield criterion, which is linear in the meridional plane, is still widely used in geotechnical analysis. In computation with this model, however, difficulties arise due to the gradient discontinuities which occur at the apex area of the yield surface. These singularities often cause the stress-point integration algorithm to perform inefficiently or even fail. Recently, some advanced methods have been presented to eliminate the singularity and good results have been achieved. For cohesionless-frictional geomaterial, the singular point on the yield surface is a zero stress point, at which global stiffness matrix becomes singular in numerical analysis and the advanced methods may be not effective. In this paper, an implicit integration algorithm of constitutive relation is presented. A pseudo yield surface is introduced and the dual stress projection scheme is employed to remove the apex singularity and zero stress point on the yield surface. Based on the presented algorithm, an elastoplastic finite element procedure is developed for numerical analysis of cohesionless-frictional geomaterial. Case studies are performed to validate the proposed algorithm.. |
| 会议录 | PROCEEDINGS OF THE EIGHTEENTH (2008) INTERNATIONAL OFFSHORE AND POLAR ENGINEERING CONFERENCE, VOL 2
 |
| 会议录出版者 | INTERNATIONAL SOCIETY OFFSHORE& POLAR ENGINEERS |
| 会议录出版地 | CUPERTINO |
| 语种 | 英语 |
| WOS研究方向 | Engineering |
| WOS记录号 | WOS:000259889600125 |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/4494]  |
| 专题 | 岩土力学所知识全产出_会议论文 国家重点实验室知识产出_会议论文 |
| 作者单位 | 1.Chinese Acad Sci, State Key Lab Geomech & Geotech Engn, Inst Rock & Soil Mech ; 2.Dalian Univ Technol, Sch Civil & Hydraul Engn, Inst Geotech Engn ; 3.Dalian Univ Technol, State Key Lab Coastal & Offshore Engn |
| 推荐引用方式 GB/T 7714 | Yuan, F. F.,Zhan, Y. G.,Luan, M. T.. IMPLICIT INTEGRATION ALGORITHM OF ELASTPLASTIC CONSTITUTIVE RELATION FOR COHESIONLESS-FRICTIONAL GEOMATERIAL[C]. 见:. Vancouver, CANADA. JUL 06-11, 2008. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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