A new idea of modeling shear band in metallic glass based on the concept of distributed dislocation
文献类型：期刊论文
| 作者 | Li, Xiaotao4; Qu, Ruitao3; Rao, Wei2; Jiang, Xiaoyu1 |
| 刊名 | JOURNAL OF NON-CRYSTALLINE SOLIDS
 |
| 出版日期 | 2022-02-01 |
| 卷号 | 577页码:12 |
| ISSN号 | 0022-3093 |
| 关键词 | Shear band Metallic glasses Distributed dislocation Void Notch Finite element |
| DOI | 10.1016/j.jnoncrysol.2021.121328 |
| 通讯作者 | Li, Xiaotao(lixiaotao@cdu.edu.cn) |
| 英文摘要 | Shear bands are closely linked with the plasticity and fracture behaviors of metallic glasses (MGs). This work proposes a new idea to predict shear bands by continuously distributed dislocations. The dislocations are unreal and used to model the plastic deformation of shear band. The possible positions of shear band initiation are determined based on the elastic stress field, and the direction and length of shear band propagation are determined by the distributed dislocation technique. Finite element simulations based on constitutive model are carried out to compare with the theoretical modeling. Two examples are considered, i.e., shear bands near a void and a notch under tensile loading. The results show that the theoretically predicted shear band morphology is well consistent with the finite element simulations, which verifies the validation of using distributed dislocations to predict shear bands. This work provides a new way to model shear band, and it has potential applications in predicting shear band morphology and fracture behaviors in MGs. |
| WOS关键词 | STRESS-CONCENTRATION ; MECHANICAL-BEHAVIOR ; FRACTURE MECHANISMS ; MICRO-CRACK ; PLASTICITY ; INITIATION ; TOUGHNESS ; TENSION ; SIZE |
| WOS研究方向 | Materials Science |
| 语种 | 英语 |
| WOS记录号 | WOS:000779016100003 |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/88811]  |
| 专题 | 力学研究所_非线性力学国家重点实验室 |
| 通讯作者 | Li, Xiaotao |
| 作者单位 | 1.Southwest Jiaotong Univ, Sch Mech & Engn, Chengdu 610031, Peoples R China 2.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China 3.Northwestern Polytech Univ, State Key Lab Solidificat Proc, Xian 710072, Peoples R China 4.Chengdu Univ, Inst Adv Study, Chengdu 610106, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Xiaotao,Qu, Ruitao,Rao, Wei,et al. A new idea of modeling shear band in metallic glass based on the concept of distributed dislocation[J]. JOURNAL OF NON-CRYSTALLINE SOLIDS,2022,577:12. |
| APA | Li, Xiaotao,Qu, Ruitao,Rao, Wei,&Jiang, Xiaoyu.(2022).A new idea of modeling shear band in metallic glass based on the concept of distributed dislocation.JOURNAL OF NON-CRYSTALLINE SOLIDS,577,12. |
| MLA | Li, Xiaotao,et al."A new idea of modeling shear band in metallic glass based on the concept of distributed dislocation".JOURNAL OF NON-CRYSTALLINE SOLIDS 577(2022):12. |
入库方式： OAI收割
来源：力学研究所
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