Using a cohesive zone modeling to predict the compressive and tensile behavior on the failure load of single lap bonded joint

Badr Benamar,Mohamed Mokhtari,Kouider Madani,Habib Benzaama

doi:10.3221/igf-esis.50.11

Badr Benamar, Mohamed Mokhtari + Show 2 more

Open Access

https://doi.org/10.3221/igf-esis.50.11

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Abstract

The detachment plates 2024T3 by an Araldite adhesive is studied in this work by using the finite element method to predict the damage in traction and compression behavior under the effect of geometrical parameters such as the lap length and the geometric shape of the plates called tapered. The numerical calculation is done by the ABAQUS calculation code. The adhesive has been modeled by an element of the cohesive zone CZM which takes part of the analysis in the first place on the influence of these parameters in mixed mode such as the critical energy and the maximum stress in opening and sliding. It is well shown that the behavior and parameters evaluated condition the resistance of our bonded structure to damage. The effect of these various parameters evaluated on the resistance is presented as results by failure load curves where each value represents an analyzed model.

Highlights

Adhesive bonding is frequently used to manufacture complex-shaped structures and in the several fields of engineering; easy manufacturing and possibility to joint different materials [1]
We find the geometric shape of the single lap joint is the most studied in the behavior of assemblies
The objective of this study is to evaluate by numerical simulation the effect of cohesive stiffness, cohesive strength and fracture energy of the adhesive in order to see their effect on the value of the failure load of the assembly type Aluminum / Aluminum under a compressive and tensile behavior

Summary

INTRODUCTION

Adhesive bonding is frequently used to manufacture complex-shaped structures and in the several fields of engineering; easy manufacturing and possibility to joint different materials [1]. Luca Sorrentino et al [10] have studied the single-lap joint where they demonstrated the effect of surface treatments on the strength of assemblies. Other technique implementation in ABAQUS® used without meshing again like the extended finite element modeling (XFEM) [20] It has used by Campilho et al [21] for strength prediction of single and double-lap joints. The objective of this study is to evaluate by numerical simulation the effect of cohesive stiffness, cohesive strength and fracture energy of the adhesive in order to see their effect on the value of the failure load of the assembly type Aluminum / Aluminum under a compressive and tensile behavior. We put into consideration the effect of the percentile variation of mode I and mode II on the value of the failure load of the assembly, analyzing the numerical results show that the failure load increases as the adhesive have high strength especially in mode II

COHESIVE INTERFACES AND INPUT PARAMETER

GII GIIC

COHESIVE PROPERTIES EFFECTS

Effect of tapered geometry on the failure load

SENSITIVITY ANALYSES

CONCLUSION