On enrichment strategies and methods to extract stress intensity factors using extended finite element method for bimaterials
文献类型：期刊论文
| 作者 | Ru M(茹敏) ; Liu CQ(刘传奇); Wei YJ(魏宇杰)
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| 刊名 | ENGINEERING FRACTURE MECHANICS
 |
| 出版日期 | 2023-03-28 |
| 卷号 | 281页码:109060 |
| 关键词 | X FEM Bimaterial Enriching scheme Stress intensity factor |
| ISSN号 | 0013-7944 |
| DOI | 10.1016/j.engfracmech.2023.109060 |
| 英文摘要 | The eXtended Finite Element Method (X FEM) is a versatile tool to model cracks and interfaces where sharp gradients and even discontinuity of deformation across the interface may occur. The enrichment functions are introduced to depict possible discontinuity and singularity known from analytical solutions. For bimaterials, the gradients of the displacements are discontinuous across the interface, which can be modeled by ramp functions. In this work, we check the role of the enrichment strategies with and without ramp functions for the accuracy of enriching schemes, and also compare three different methods, i.e. the Interaction Integral Method (IIM), Contour Integration Method (CIM), and Displacement Correlation Method (DCM), to extract the Stress Intensity Factors (SIFs). Both planar and non planar examples are employed to examine the enriching strategies and the three SIF extraction methods. We find that the enriched ramp functions can improve the accuracy in terms of strain energy, but do not significantly affect the SIFs. The IIM is the best choice to extract SIFs and the DCM can provide enough accuracy with a careful choice of extraction parameters. This work can help a reader when choose the enriching strategies and the extraction methods of the SIFs for interface cracks between dissimilar materials. |
| 分类号 | 一类 |
| WOS研究方向 | Mechanics |
| 语种 | 英语 |
| WOS记录号 | WOS:000926489500001 |
| 资助机构 | National Natural Science Foundation of China, China (NSFC) [11988102, 11790291] ; NSFC, China [12172368] ; One Hundred Talents Program of Chinese Academy of Sciences (CAS) , China |
| 其他责任者 | Liu, CQ ; Wei, YJ (corresponding author), Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China. |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/91800]  |
| 专题 | 力学研究所_非线性力学国家重点实验室 |
| 作者单位 | 1.Univ Chinese Acad Sci, Sch Future Technol, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China |
| 推荐引用方式 GB/T 7714 | Ru M,Liu CQ,Wei YJ. On enrichment strategies and methods to extract stress intensity factors using extended finite element method for bimaterials[J]. ENGINEERING FRACTURE MECHANICS,2023,281:109060. |
| APA | 茹敏,刘传奇,&魏宇杰.(2023).On enrichment strategies and methods to extract stress intensity factors using extended finite element method for bimaterials.ENGINEERING FRACTURE MECHANICS,281,109060. |
| MLA | 茹敏,et al."On enrichment strategies and methods to extract stress intensity factors using extended finite element method for bimaterials".ENGINEERING FRACTURE MECHANICS 281(2023):109060. |
入库方式： OAI收割
来源：力学研究所
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