Structured mesh refinement in MLS-based numerical manifold method and its application to crack problems
文献类型：期刊论文
| 作者 | Liu, Feng2,3; Xia, Kaiwen1,2 |
| 刊名 | ENGINEERING ANALYSIS WITH BOUNDARY ELEMENTS
 |
| 出版日期 | 2017 |
| 卷号 | 84页码:42-51 |
| 关键词 | Numerical manifold method Moving least squares Stress intensity factor Crack propagation Eccentric domain of influence Structured mesh refinement |
| ISSN号 | 0955-7997 |
| DOI | 10.1016/j.enganabound.2017.08.004 |
| 英文摘要 | The numerical manifold method (NMM) is suitable for both continuity and discontinuity problems due to its two cover systems, namely the mathematical cover and the physical cover. However, the use of these two cover systems makes it difficult to implement local mesh refinement in conventional NMM. In this paper, a structured mesh refinement is proposed for crack problems within the framework of MLS-based NMM. In order to balance both accuracy and efficiency, an eccentric domain of influence is suggested near the transition region, where the domain size is determined by surrounding elements. The visibility criterion used in element-free Galerkin method is introduced to describe the discontinuity near the crack tip. The main advantage of the proposed method is that it can solve complex crack problems straightforwardly without introducing any extra degree of freedom. Several examples are tested to demonstrate the effectiveness of the proposed method for crack problems. (C) 2017 Elsevier Ltd. All rights reserved. |
| WOS研究方向 | Engineering ; Mathematics |
| 语种 | 英语 |
| WOS记录号 | WOS:000413614000005 |
| 出版者 | ELSEVIER SCI LTD |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/4158]  |
| 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 Toronto, Dept Civil Engn 2.Tianjin Univ, State Key Lab Hydraul Engn Simulat & Safety, Sch Civil Engn ; 3.Chinese Acad Sci, State Key Lab Geomech & Geotech Engn, Inst Rock & Soil Mech ; |
| 推荐引用方式 GB/T 7714 | Liu, Feng,Xia, Kaiwen. Structured mesh refinement in MLS-based numerical manifold method and its application to crack problems[J]. ENGINEERING ANALYSIS WITH BOUNDARY ELEMENTS,2017,84:42-51. |
| APA | Liu, Feng,&Xia, Kaiwen.(2017).Structured mesh refinement in MLS-based numerical manifold method and its application to crack problems.ENGINEERING ANALYSIS WITH BOUNDARY ELEMENTS,84,42-51. |
| MLA | Liu, Feng,et al."Structured mesh refinement in MLS-based numerical manifold method and its application to crack problems".ENGINEERING ANALYSIS WITH BOUNDARY ELEMENTS 84(2017):42-51. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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