Detailed investigation of the analysis conditions in the evaluation of bonded joints by cohesive zone models

6th International Conference on Fracture Fatigue and Wear

Rocha, R.J.B.^1 ; Campilho, R.D.S.G.^1,2

Departamento de Engenharia Mecânica, Instituto Superior de Engenharia Do Porto, Instituto Politécnico Do Porto, Rua Dr. António Bernardino de Almeida 431, Porto

4200-072, Portugal^1

INEGI, Pólo FEUP, Rua Dr. Roberto Frias s/n, Porto

4200-465, Portugal^2

关键词: Adhesive layers;    Analysis conditions;    Cohesive zone model;    Damage initiation and growths;    Material conditions;    Single lap joints;    Strength prediction;    Tensile loading;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/843/1/012002/pdf
DOI  :  10.1088/1742-6596/843/1/012002

来源: IOP

【 摘 要 】

Cohesive Zone Models (CZM) are widely used for the strength prediction of adhesive joints. This work studies the influence of different conditions used in CZM simulations to model a thin adhesive layer in single-lap joints (SLJ) under a tensile loading, for an estimation of their influence on the strength prediction under diverse geometrical and material conditions. Adhesives ranging from brittle to highly ductile and overlap lengths (LO) between 12.5 and 50 mm were considered. Several damage initiation and growth criteria were tested. The analysis carried out in this work allowed to conclude that CZM is a powerful technique for strength prediction of bonded joints, provided that the modelling conditions are properly defined.