| 题名 | Rate-dependent fracture of hydrogels due to water migration |
| 作者 | |
| 通讯作者 | Lu，Tongqing |
| 发表日期 | 2022-10-01
|
| DOI | |
| 发表期刊 | |
| ISSN | 0022-5096
|
| EISSN | 1873-4782
|
| 卷号 | 167 |
| 摘要 | When a hydrogel deforms, the water molecules inside the hydrogel move together with the polymer network. At a particular time scale and length scale, the water migration within the hydrogel as well as the water exchange with the environment can greatly affect the deformation of the hydrogel. In this work, we study the rate-dependent fracture of hydrogels due to water migration both experimentally and theoretically. We build an experimental setup that can apply mechanical loads to hydrogel samples immersed in a liquid environment, water or oil. We apply monotonic load to hydrogel samples under different loading rates and find that the fracture stretch of hydrogel is highly dependent on the loading rate when the hydrogel is immersed in water, and is almost independent of the loading rate when the hydrogel is immersed in oil. We also apply step load to hydrogel samples and find that the hydrogel immersed in water is more susceptible to delayed fracture than that immersed in oil. We adopt the large deformation theory incorporating water migration developed by Hong et al. (2008) and use finite element software to calculate the deformation and fracture of hydrogels under the two types of environmental conditions. The numerical calculations show that at the time scale and length scale used in the experiment, the water migration satisfies the small-scale swelling condition of fracture. When the hydrogel is immersed in water, the water molecules can exchange with the environment under different loading rates. When the hydrogel is immersed in oil, the water molecules can hardly move in or out of the hydrogel. The theoretical predictions explain the experimental results. |
| 关键词 | |
| 相关链接 | [Scopus记录] |
| 收录类别 | |
| 语种 | 英语
|
| 学校署名 | 其他
|
| 资助项目 | National Natural Science Foundation of China[11922210, 11732012];National Natural Science Foundation of China[11972015];
|
| WOS研究方向 | Materials Science
; Mechanics
; Physics
|
| WOS类目 | Materials Science, Multidisciplinary
; Mechanics
; Physics, Condensed Matter
|
| WOS记录号 | WOS:000853876300002
|
| 出版者 | |
| EI入藏号 | 20223012410826
|
| EI主题词 | Deformation
; Fracture
; Loading
; Molecules
|
| EI分类号 | Materials Handling Methods:691.2
; Colloid Chemistry:801.3
; Chemical Products Generally:804
; Atomic and Molecular Physics:931.3
; Materials Science:951
|
| ESI学科分类 | ENGINEERING
|
| Scopus记录号 | 2-s2.0-85134640766
|
| 来源库 | Scopus
|
| 引用统计 |
被引频次[WOS]：11
|
| 成果类型 | 期刊论文 |
| 条目标识符 | //www.snoollab.com/handle/2SGJ60CL/359522 |
| 专题 | 工学院_力学与航空航天工程系 |
| 作者单位 | 1.State Key Lab for Strength and Vibration of Mechanical Structures. Department of Engineering Mechanics,Xi'an Jiaotong University,Xi'an,710049,China 2.Department of Mechanics and Aerospace Engineering,Southern University of Science and Technology,Shenzhen,518055,China |
| 推荐引用方式 GB/T 7714 |
Yang，Yan,Guo，Haoyu,Du，Zhenjiang,et al. Rate-dependent fracture of hydrogels due to water migration[J]. JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS,2022,167.
|
| APA |
Yang，Yan,Guo，Haoyu,Du，Zhenjiang,Hong，Wei,Lu，Tongqing,&Wang，Tiejun.(2022).Rate-dependent fracture of hydrogels due to water migration.JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS,167.
|
| MLA |
Yang，Yan,et al."Rate-dependent fracture of hydrogels due to water migration".JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS 167(2022).
|
| 条目包含的文件 | 条目无相关文件。 | |||||
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