A mixed three-node triangular element with continuous nodal stress for fully dynamic consolidation of porous media
文献类型：期刊论文
| 作者 | Wu, Wenan1,3; Yang, Yongtao3; Zheng, Hong2 |
| 刊名 | ENGINEERING ANALYSIS WITH BOUNDARY ELEMENTS
 |
| 出版日期 | 2020-04-01 |
| 卷号 | 113页码:232-258 |
| 关键词 | Continuous nodal stresses Dynamic consolidation Numerical manifold method Three-variable Biot model Wave propagation |
| ISSN号 | 0955-7997 |
| DOI | 10.1016/j.enganabound.2020.01.006 |
| 英文摘要 | A mixed three-node triangular element with continuous nodal stresses (mixed T3-MINI-CNS) is presented for dynamics of porous media based on the three-variable u-w-p Biot model and the numerical manifold method (NMM). The displacement and velocity approximations are derived using the constrained and orthonormalized least-square (CO-LS) scheme, which possess continuous derivatives and Delta property at nodes. The pressure approximation takes linear piecewise interpolation. Relative to higher-order element, the mixed quadratic six-node triangle, mixed T3-MINI-CNS can model dynamic response of porous media more precisely with fewer unknowns, especially the short-term transient response. Moreover, mixed T3-MINI-CNS is immune from locking in both undrained and rigid skeleton limits and achieves more accurate pressure results than other characteristic locking-free elements. Based on NMM and u-w-p formulation, the most versatile three-node triangular mesh can always be used, avoiding difficulties in mesh generation. As fluid acceleration is involved, mixed T3-MINI-CNS is capable of totally predicting dynamic response of porous mixture, especially under rapid loading condition. In addition, reliability and precision of the time integration are assessed in terms of the energy balance condition. Through calculating benchmark problems, convergence, accuracy, and reliability of the mixed T3-MINI-CNS are thoroughly investigated and validated. |
| 资助项目 | National Natural Science Foundation of China[51609240] ; National Natural Science Foundation of China[11172313] ; National Natural Science Foundation of China[51538001] |
| WOS研究方向 | Engineering ; Mathematics |
| 语种 | 英语 |
| WOS记录号 | WOS:000518874200020 |
| 出版者 | ELSEVIER SCI LTD |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/23692]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Yang, Yongtao |
| 作者单位 | 1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Beijing Univ Technol, Minist Educ, Key Lab Urban Secur & Disaster Engn, Beijing 100124, Peoples R China 3.Chinese Acad Sci, State Key Lab Geomech & Geotech Engn, Inst Rock & Soil Mech, Wuhan 430071, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wu, Wenan,Yang, Yongtao,Zheng, Hong. A mixed three-node triangular element with continuous nodal stress for fully dynamic consolidation of porous media[J]. ENGINEERING ANALYSIS WITH BOUNDARY ELEMENTS,2020,113:232-258. |
| APA | Wu, Wenan,Yang, Yongtao,&Zheng, Hong.(2020).A mixed three-node triangular element with continuous nodal stress for fully dynamic consolidation of porous media.ENGINEERING ANALYSIS WITH BOUNDARY ELEMENTS,113,232-258. |
| MLA | Wu, Wenan,et al."A mixed three-node triangular element with continuous nodal stress for fully dynamic consolidation of porous media".ENGINEERING ANALYSIS WITH BOUNDARY ELEMENTS 113(2020):232-258. |
入库方式： OAI收割
来源：武汉岩土力学研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。