Validation of Numerical Approach for the Analysis of Adhesively-bonded Scarf Joints
The numerical method that is most frequently used for adhesive bonds is the Cohesive Zone Model (CZM). In order to predict joint strength under mixed-mode loading, this work validates CZM laws in traction and shear that were calculated by using the direct technique. This chapter looked at scarf joints with different scarf angles () and adhesives with different ductilities. Based on pure-mode cohesive laws, simplified triangular, trapezoidal, and exponential laws were created and assessed for each glue. Their validity was determined by comparing the numerical predictions to the results of the experiments. By using the direct method, it was possible to produce extremely accurate predictions for the maximum load (Pm), which showed that cohesive law shape was best for each adhesive/geometry combination. This analysis has led to the conclusion that no significant Pm mistakes are incurred by the selection of a less appropriate law.
D. F. O. Silva,
Departamento de Engenharia Mecânica, Instituto Superior de Engenharia do Porto, Instituto Politécnico do Porto, R. Dr. António Bernardino de Almeida, 431, 4200-072 Porto, Portugal.
R. D. S. G. Campilho,
Departamento de Engenharia Mecânica, Instituto Superior de Engenharia do Porto, Instituto Politécnico do Porto, R. Dr. António Bernardino de Almeida, 431, 4200-072 Porto, Portugal and INEGI – Pólo FEUP, Rua Dr. Roberto Frias, 400, 4200-465 Porto, Portugal.
Please see the link here: https://stm.bookpi.org/TIER-V7/article/view/7925
Keywords: Adhesive joint, structural adhesive, finite elements, cohesive zone model, scarf joint