Mechanical behavior of PVA hydrogels over a wide strain rate range and a new two-phase visco-hyperelastic constitutive model

被引：3

作者：

Xu, Peidong ^{[1
]}

Tang, Liqun ^{[1
,2
]}

Wang, Jingyu ^{[1
]}

Ni, Ping ^{[1
]}

Liu, Zejia ^{[1
]}

Jiang, Zhenyu ^{[1
]}

Liu, Yiping ^{[1
]}

Zhou, Licheng ^{[1
]}

Yang, Bao ^{[1
]}

机构：

[1] Sch Civil Engn & Transportat, Guangzhou, Guangdong, Peoples R China

[2] South China Univ Technol, State Key Lab Subtrop Bldg Sci, Guangzhou, Guangdong, Peoples R China

来源：

MECHANICS OF ADVANCED MATERIALS AND STRUCTURES | 2024年

基金：

国家重点研发计划; 中国国家自然科学基金;

关键词：

Strain rate effect; intermediate SHPB system; visco-hyperelastic model; PVA hydrogels; DYNAMIC-BEHAVIOR; BRAIN-TISSUE; INTERMEDIATE; POLYURETHANE; COMPOSITE;

D O I：

10.1080/15376494.2024.2386398

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

PVA hydrogels, as potential substitutes for soft biological tissues, are valuable in biomedical applications. However, studies on mechanical behavior at 100-500/s are scarce, where the inflection point of strain rate effect lies, prompting the utilization of bilinear models with inaccuracies. To improve accuracy, we developed a Hopkinson bar for ultra-soft materials and conducted experimental studies on PVA hydrogels at various strain rates. A new visco-hyperelastic model that incorporates the polymer network and water phases was developed and verified by experimental data. It captures both strain rate effects and water loss, providing insights for hydrogels and soft biomaterials.

引用

页数：14

共 23 条

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