Large deformation and crack propagation analyses of hydrogel by peridynamics

Chen，Yujie; Yang，Yang; Liu，Yijun

2023-05-19

10.1016/j.engfracmech.2023.109261

Engineering Fracture Mechanics   Impact Factor & Quartile

0013-7944

1873-7315

In this paper, the large tensile deformation and Mode-I crack propagation of hydrogel are effectively simulated by the bond-associated (BA) non-ordinary state-based (NOSB) peridynamics (PD). Based on the nonlocal theory and meshless characteristic, the fracture involving large deformation of hydrogel is solved with simple implementations. In the analysis, the Gent model is first introduced into NOSB PD as the constitutive model to describe the stress-stretch response of hydrogel under a large tensile stretch. The bond-associated scheme is applied to overcome zero-energy modes and numerical oscillation in conventional NOSB PD. Effective stretch criterion is applied to capture the crack propagation. With the explicit dynamic solver, the tensile deformation of a hydrogel sheet with a hole and the crack propagation process of a hydrogel sheet with a pre-notch under pure shear are analyzed. The predicted stress-stretch responses are in good agreement with the experimental observations, which demonstrates the effectiveness and efficiency of the developed PD approach for predicting large deformation and crack propagation of hydrogel.

Crack propagation Gent model Hydrogel Large deformation Peridynamics

SCI

English

First ; Corresponding

National Natural Science Foundation of China[12272160] ; Natural Science Foundation of Guangdong Province[2020A1515010685] ; Department of Education of Guangdong Province[2020ZDZX2008]

Mechanics

Mechanics

WOS:000988055000001

PERGAMON-ELSEVIER SCIENCE LTD

ENGINEERING

2-s2.0-85153198022

Scopus

Department of Mechanics and Aerospace Engineering,Southern University of Science and Technology,Shenzhen,China

Chen，Yujie,Yang，Yang,Liu，Yijun. Large deformation and crack propagation analyses of hydrogel by peridynamics[J]. Engineering Fracture Mechanics,2023,284.

Chen，Yujie,Yang，Yang,&Liu，Yijun.(2023).Large deformation and crack propagation analyses of hydrogel by peridynamics.Engineering Fracture Mechanics,284.

Chen，Yujie,et al."Large deformation and crack propagation analyses of hydrogel by peridynamics".Engineering Fracture Mechanics 284(2023).