Physics motivated fractional viscoelasticity model for dynamic relaxation in amorphous solids
文献类型：期刊论文
| 作者 | Zhu, F. ; Xing, G.H.; Lyu, G.J.; Zhang, L.T.; Wang YJ(王云江); Yang, Y.; Pelletier, J.M.; Qiao, J.C.
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| 刊名 | INTERNATIONAL JOURNAL OF PLASTICITY
 |
| 出版日期 | 2023-05 |
| 卷号 | 164页码:103588 |
| 关键词 | Non Debye relaxation Fractional derivative Metallic glasses Quasi point defect Structural heterogeneity |
| ISSN号 | 0749-6419 |
| DOI | 10.1016/j.ijplas.2023.103588 |
| 英文摘要 | Dynamic mechanical relaxation is an important metric to understand the mechanical/physical properties of amorphous solids which are of viscoelastic nature. Due to the heterogenous microstructure, the relaxation behavior of amorphous solids usually shows strong deviation from the Debye relaxation. The distribution of relaxation time derived from either the stretched exponential function (KWW function) or the power law form is probably the most adopted paradigm to describe the non Debye relaxation. They are essentially the continuous spectrums given in analytical forms. However, whether a real amorphous material conforms to such dis tribution law remains to be discussed. Here we test the assumption in typical metallic glasses (MGs) as representatives of the general amorphous solids. The mechanical spectrum of a Cu46Zr47Al7 MG in wide frequency domain is probed by the dynamic mechanical analysis tech nique. It is found that both the KWW function and the modified fractional (MF) model based on power law can well describe the experimental data. As a step forward, we combine the quasi point defect theory with the MF model to theoretically reveal the feature of temperature dependent structural evolution in MG. Finally, the distribution of relaxation time correspond ing to the experimental data is discretized to argue the theoretically predicted microstructural heterogeneity in the MGs. |
| 分类号 | 一类 |
| WOS研究方向 | Engineering, Mechanical ; Materials Science, Multidisciplinary ; Mechanics |
| 语种 | 英语 |
| WOS记录号 | WOS:000956723300001 |
| 资助机构 | National Natural Science Foundation of China (NSFC) [51971178, 52271153] ; Fundamental Research Funds for the Central Universities [D5000220034] ; Natural Science Basic Research Plan for Distinguished Young Scholars in Shaanxi Province [2021JC 12] ; NSFC [12072344] ; Youth Innovation Promotion Association of Chinese Academy of Sciences |
| 其他责任者 | Qiao, J (corresponding author), Northwestern Polytech Univ, Sch Mech Civil Engn & Architecture, Xian 710072, Peoples R China. |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/91837]  |
| 专题 | 力学研究所_非线性力学国家重点实验室 |
| 作者单位 | 1.Yang, Y.] City Univ Hong Kong, Coll Engn, Dept Mech Engn, Kowloon, Tat Chee Ave, Hong Kong, Peoples R China 2.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China 3.[Zhu, F.; Xing, G. H.; Lyu, G. J.; Zhang, L. T.; Qiao, J. C.] Northwestern Polytech Univ, Sch Mech Civil Engn & Architecture, Xian 710072, Peoples R China 4.Pelletier, J. M.] Univ Lyon, MATEIS, UMR CNRS5510, INSA Lyon, Bat B Pascal, F 69621 Lyon, France 5.Yang, Y.] City Univ Hong Kong, Coll Engn, Dept Mat Sci & Engn, Kowloon, Tat Chee Ave, Hong Kong, Peoples R China 6.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhu, F.,Xing, G.H.,Lyu, G.J.,et al. Physics motivated fractional viscoelasticity model for dynamic relaxation in amorphous solids[J]. INTERNATIONAL JOURNAL OF PLASTICITY,2023,164:103588. |
| APA | Zhu, F..,Xing, G.H..,Lyu, G.J..,Zhang, L.T..,王云江.,...&Qiao, J.C..(2023).Physics motivated fractional viscoelasticity model for dynamic relaxation in amorphous solids.INTERNATIONAL JOURNAL OF PLASTICITY,164,103588. |
| MLA | Zhu, F.,et al."Physics motivated fractional viscoelasticity model for dynamic relaxation in amorphous solids".INTERNATIONAL JOURNAL OF PLASTICITY 164(2023):103588. |
入库方式： OAI收割
来源：力学研究所
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