Features of the volume change and a new constitutive equation of hydrogels under uniaxial compression | |
Zhang,YR1,4; Xu KJ1; Bai YL(白以龙)1,3; Tang LQ1,2; Jiang ZY1; Liu YP1; Liu ZJ1; Zhou LC1; Zhou XF4 | |
刊名 | JOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS |
2018-09-01 | |
卷号 | 85页码:181-187 |
关键词 | Constitutive Equation Volume Change Hydrogel |
ISSN号 | 1751-6161 |
DOI | 10.1016/j.jmbbm.2018.06.004 |
英文摘要 | For high-water content hydrogels in compression, the water inside of hydrogels contributes to the response of hydrogels to external loads directly, but part of the water is expelled from hydrogels in the meantime to change the volume of the hydrogel and reduce the contribution. In order to consider the contribution of the water in the constitution equation, PVA (polyvinyl alcohol) hydrogels with high-water content were used as examples, and compressive experiments were carried out to measure both the stress-strain relation and the change of the volume in the meantime. By considering the effect of the difference of the contribution of water in different directions of the hydrogel, we deduced a new constitutive equation, which can pretty well depict the stress-strain of hydrogels with different water contents. The results showed that the contribution of water to the total stress increases with the compression strain and even exceed that of the polymer, although the expelled water reduces the contribution at the early loading stage, which well explains the difference of elastic moduli of hydrogels in compression and tension. |
分类号 | 二类/q1 |
WOS关键词 | Polyvinyl-alcohol-hydrogel ; Mechanical Characterization ; Articular-cartilage ; Gels ; Model ; Deformation ; Replacement ; Behaviors ; Solvent |
WOS研究方向 | Engineering ; Materials Science |
语种 | 英语 |
WOS记录号 | WOS:000440119800021 |
资助机构 | National Natural Science Foundation of China (NSFC)(11472109 ; Natural Science Foundation of Guangdong Province(2015A030311046 ; 11772134) ; 2015B010131009) |
内容类型 | 期刊论文 |
源URL | [http://dspace.imech.ac.cn/handle/311007/77650] |
专题 | 力学研究所_非线性力学国家重点实验室 |
通讯作者 | Tang LQ |
作者单位 | 1.South China Univ Technol, Sch Civil Engn & Transportat, 381 Wushan Rd, Guangzhou, Guangdong, Peoples R China 2.South China Univ Technol, State Key Lab Subtrop Bldg Sci, 381 Wushan Rd, Guangzhou, Guangdong, Peoples R China 3.Chinese Acad Sci, Inst Mech, LNM, Beijing, Peoples R China 4.Guangdong Inst Intelligent Mfg, Guangzhou, Guangdong, Peoples R China |
推荐引用方式 GB/T 7714 | Zhang,YR,Xu KJ,Bai YL,et al. Features of the volume change and a new constitutive equation of hydrogels under uniaxial compression[J]. JOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS,2018,85:181-187. |
APA | Zhang,YR.,Xu KJ.,Bai YL.,Tang LQ.,Jiang ZY.,...&Zhou XF.(2018).Features of the volume change and a new constitutive equation of hydrogels under uniaxial compression.JOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS,85,181-187. |
MLA | Zhang,YR,et al."Features of the volume change and a new constitutive equation of hydrogels under uniaxial compression".JOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS 85(2018):181-187. |
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