Prediction of stress concentration near voids using crystal plasticity modelling
文献类型：期刊论文
| 作者 | Wang, Jiaxuan1,2; Wu, Han1,2 ; Du, Rou2; Ma, Hansong2; Liu, Xiaoming1,2
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| 刊名 | ACTA MECHANICA SINICA
 |
| 出版日期 | 2025-11-01 |
| 卷号 | 41期号:11页码:15 |
| 关键词 | Voids Stress concentration factor Crystal plasticity Misorientation variation Multivariable empirical formula |
| ISSN号 | 0567-7718 |
| DOI | 10.1007/s10409-024-24484-x |
| 通讯作者 | Wu, Han(wuhan213@mails.ucas.ac.cn) |
| 英文摘要 | Voids play an important role in the fatigue behaviour of polycrystal materials. In this paper, the effects of three factors affecting the stress concentration factors (SCFs) near voids, i.e., size, depth, and applied load, are investigated by employing crystal plasticity constitutive models in polycrystal bulks. The results indicate that SCF is dominated by the void size, while void depth and stress level play secondary roles. The SCF fluctuates by the orientation differences among grains and increases with increasing the size of the void. Finally, based on sensitivity examination of orientations and configurations of grains surrounding the void, an empirical multivariable-coupled formula is proposed to assess SCF near voids considering anisotropy, and the presented model is in good agreement with the simulation results. |
| WOS关键词 | CRACK INITIATION ; ELLIPTIC HOLE ; CIRCULAR HOLE ; GRAIN-SIZE ; FATIGUE ; DEFORMATION ; TITANIUM ; MECHANISMS ; BEHAVIOR ; DEFECTS |
| 资助项目 | National Natural Science Foundation of China[12022210] ; National Natural Science Foundation of China[12032001] |
| WOS研究方向 | Engineering ; Mechanics |
| 语种 | 英语 |
| WOS记录号 | WOS:001439782200003 |
| 资助机构 | National Natural Science Foundation of China |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/100199]  |
| 专题 | 力学研究所_非线性力学国家重点实验室 |
| 通讯作者 | Wu, Han |
| 作者单位 | 1.Univ Chinese Acad Sci, Sch Engn Sci, 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 | Wang, Jiaxuan,Wu, Han,Du, Rou,et al. Prediction of stress concentration near voids using crystal plasticity modelling[J]. ACTA MECHANICA SINICA,2025,41(11):15. |
| APA | Wang, Jiaxuan,Wu, Han,Du, Rou,Ma, Hansong,&Liu, Xiaoming.(2025).Prediction of stress concentration near voids using crystal plasticity modelling.ACTA MECHANICA SINICA,41(11),15. |
| MLA | Wang, Jiaxuan,et al."Prediction of stress concentration near voids using crystal plasticity modelling".ACTA MECHANICA SINICA 41.11(2025):15. |
入库方式： OAI收割
来源：力学研究所
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