Application of cohesive zone model to the fracture process of freshwater polycrystalline ice under flexural loading

5th All-Russian Conference with International Participation POLAR MECHANICS

地球科学;力学

Gribanov, I.^1 ; Taylor, R.^1 ; Sarracino, R.^1

Memorial University of Newfoundland, St.John's

NL, Canada^1

关键词: 4-point bending tests;    Cohesive zone model;    Finite element simulations;    Flexural loading;    Fracture process;    Function of time;    Polycrystalline ice;    Polycrystalline solid;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/193/1/012013/pdf
DOI  :  10.1088/1755-1315/193/1/012013

学科分类：力学，机械学

来源: IOP

【 摘 要 】

Cohesive zone modeling is a promising technique for modeling fracture processes in polycrystalline solids. The Park-Paulino-Roesler (PPR) formulation for cohesive zones is a flexible method that allows one to reproduce behaviours of a wide range of materials. In this work, an implicit finite element simulation is performed to capture the fracture of freshwater, polycrystalline ice beams in 4-point bending tests. The distribution of the damaged cohesive zones and the indentation force are recorded as a function of time. Several simulations are performed to establish the relationship between the grain size and the flexural strength of the beams.