Implementation of CPCT based BIEs for 3D elasticity and its application in fracture mechanics
文献类型：期刊论文
| 作者 | Feng, Xia-Ting ; Lv, Jia-He; Chen, Bing-Rui; Yan, Fei
|
| 刊名 | ENGINEERING ANALYSIS WITH BOUNDARY ELEMENTS
 |
| 出版日期 | 2016 |
| 卷号 | 71页码:1-10 |
| 关键词 | Boundary element method Dual BEM Fracture mechanics Singular integrals |
| ISSN号 | 0955-7997 |
| DOI | 10.1016/j.enganabound.2016.06.009 |
| 英文摘要 | The accurate evaluation of singular boundary integrals is a long-debated issue for the successful implementation of BIEs. In the past decades, various methods have been developed, among which the singularity subtraction technique (SST) has been proved to be a unified method for various orders of singularities. However, the accuracy of original SST is sensitive to element shape due to the near singularity caused by element shape distortion. In this paper, a new conformal polar coordinate transformation (CPCT) for quadrilateral elements is proposed to eliminate the shape effect. Besides, an improved sigmoidal transformation is introduced in the angular direction to assign Gauss points more reasonably. By combination of the two strategies with original SST, a more efficient and robust numerical integration scheme for singular integrals can be obtained. Several numerical examples including crack problems are presented to demonstrate the accuracy and feasibility to coarse meshes for CPCT based BIEs and dual BEM. (C) 2016 Elsevier Ltd. All rights reserved. |
| WOS研究方向 | Engineering ; Mathematics |
| 语种 | 英语 |
| WOS记录号 | WOS:000383302100001 |
| 出版者 | ELSEVIER SCI LTD |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/3932]  |
| 专题 | 岩土力学所知识全产出_期刊论文 岩土力学所知识全产出 国家重点实验室知识产出_期刊论文 |
| 作者单位 | Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn |
| 推荐引用方式 GB/T 7714 | Feng, Xia-Ting,Lv, Jia-He,Chen, Bing-Rui,et al. Implementation of CPCT based BIEs for 3D elasticity and its application in fracture mechanics[J]. ENGINEERING ANALYSIS WITH BOUNDARY ELEMENTS,2016,71:1-10. |
| APA | Feng, Xia-Ting,Lv, Jia-He,Chen, Bing-Rui,&Yan, Fei.(2016).Implementation of CPCT based BIEs for 3D elasticity and its application in fracture mechanics.ENGINEERING ANALYSIS WITH BOUNDARY ELEMENTS,71,1-10. |
| MLA | Feng, Xia-Ting,et al."Implementation of CPCT based BIEs for 3D elasticity and its application in fracture mechanics".ENGINEERING ANALYSIS WITH BOUNDARY ELEMENTS 71(2016):1-10. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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