Recent advances of hydrogel network models for studies on mechanical behaviors

作     者：Jincheng Lei Ziqian Li Shuai Xu Zishun Liu Jincheng Lei;Ziqian Li;Shuai Xu;Zishun Liu

作者机构：International Center for Applied MechanicsState Key Laboratory for Strength and Vibration of Mechanical StructuresXi'an Jiaotong UniversityXi'an 710049China 

出 版 物：《Acta Mechanica Sinica》 (力学学报（英文版）)

年 卷 期：2021年第37卷第3期

页      面：367-386,I0001页

核心收录：

学科分类：081702[工学-化学工艺] 08[工学] 0817[工学-化学工程与技术] 

基　　金：The authors are grateful for the support from the National Natural Science Foundation of China(Grants 11820101001,11572236 and 11372236) the Natural Science Foundation of Shaanxi Province(Grant 2020JQ-010) the State Key Laboratory of Nonlinear Mechanics 

主　　题：Hydrogel Polymer network Mechanical behavior Fracture 

摘      要：Current constitutive theories face challenges when predicting the extremely large deformation and fracture of hydrogels,which calls for the demands to reveal the fundamental mechanism of the various mechanical behaviors of hydrogels from bottom *** hydrogel network model provides a better approach to bridge the gap between the micro-structure and the macroscopic mechanical *** work summarizes the theoretical and numerical researches on the hydrogel network models,aiming to provide new insights into the effect of microstructure on the swelling-deswelling process,hyperelasticity,viscoelasticity and fracture of *** network models are divided into full-atom network models,realistic network models and abstract network ***-atom network models have detailed atomic structure but small *** network models with different coarse-graining degree have large model size to explain the swelling-deswelling process,hyperelasticity and *** network models abstract polymer chains into analytical interactions,leading to the great leap of model *** shows advantages to reproduce the crack initiation and propagation in hydrogels by simulating chain *** research directions on the network modeling are *** hope this work can help integrate the merits of network modeling methods and continuum mechanics to capture the various mechanical behaviors of hydrogels.