Cohesive Zone Model（ CZM） for Numerical Analysis: A Review

In recent years, the importance of numerical analysis of adhesively bonded parts is increasing with increasing demand for adhesive joints. Cohesive zone model（ CZM） is one of the promising methods to evaluate the crack propagation and strength prediction of the adhesive joints. Using the cohesive element in the finite element method（ FEM）, the fracture process of the adhesive layer can be numerically analyzed. However, a clear understanding of CZM parameters and the input of the appropriate values are essential to creating correct numerical models. In this paper, a traction-separation law was explained based on its physical mechanism. Then, the meaning of the CZM parameters and determination processes of them were explained. Additionally, recent researches of adhesively bonded joints using CZM analysis were reviewed.