Determination of Critical Energy Release Rates of Adhesively Bonded Joints for Surface Treated Fiber Reinforced Thermoplastics

Adhesive joints are largely employed nowadays as a fast and effective joining process. The respective techniques for strength prediction have also improved over the years. Cohesive Zone Models (CZM’s) coupled to Finite Element Method (FEM) analyses surpass the limitations of stress and fracture criteria and allow modelling damage. CZM’s require the energy release rates in tension (Gn) and shear (Gs) and respective fracture energies in tension (Gnc) and shear (Gsc). Additionally, the cohesive strengths (tn0 for tension and ts0 for shear) must also be defined. In this work, the influence of the CZM parameters of a triangular CZM used to model a thin adhesive layer is studied, to estimate their effect on the predictions. Some conclusions were drawn for the accuracy of the simulation results by variations of each one of these parameters.

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Determination of key parameters of Al–Li alloy adhesively bonded joints using cohesive zone model

Journal of Central South University ◽

10.1007/s11771-018-3894-5 ◽

2018 ◽

Vol 25 (9) ◽

pp. 2049-2057 ◽

Cited By ~ 1

Author(s):

Shun Yuan ◽

Yi-bo Li ◽

Ming-hui Huang ◽

Jian Li

Keyword(s):

Cohesive Zone ◽

Cohesive Zone Model ◽

Zone Model ◽

Bonded Joints ◽

Adhesively Bonded ◽

Adhesively Bonded Joints

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Analysis of Failure in Adhesively Bonded Joints Using Traction Separation Theory

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.612.117 ◽

2014 ◽

Vol 612 ◽

pp. 117-122

Author(s):

Gautam Ranjan ◽

R K Pandey ◽

Asim Gopal Barman

Keyword(s):

Crack Growth ◽

Double Cantilever Beam ◽

Bonded Joints ◽

Structural Components ◽

Adhesively Bonded ◽

Adhesively Bonded Joints ◽

Sudden Loss ◽

Separation Theory ◽

Element Failure

In recent years, there has been a tremendous increase in the use of adhesively bonded joints for the structural components as they offer various advantages such as low structural weight, low fabrication cost, and improved damage tolerance. One of the major concerns in their use is the crack produced at the interface of adhesive and adherend surface causing the failure of the joint. A study on the determination of crack growth can contribute momentously to avoid the joint failure. In this study the crack growth caused in adhesive due to displacement controlled loading has been analyzed by ABAQUS/Explicit software. Crack growth was modeled in the double cantilever beam (DCB) using traction separation law by element-based cohesive behavior. The analysis showed that: (1) The adhesive joint behaves linearly before the first cohesive element failure and after that the failure continues to increase even on decreasing the load untill it fails completely, (2) The noise during the failure of adhesive is caused due to the stress wave which is produced as a result of sudden loss in traction between the adhesive and the adherend.

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Nonlinear Viscoelastic Finite Element Analysis of Adhesive Joints

Tire Science and Technology ◽

10.2346/1.2148803 ◽

1988 ◽

Vol 16 (3) ◽

pp. 146-170 ◽

Cited By ~ 4

Author(s):

S. Roy ◽

J. N. Reddy

Keyword(s):

Finite Element Analysis ◽

Finite Element ◽

Viscoelastic Behavior ◽

Bonded Joints ◽

Adhesively Bonded ◽

Element Analysis ◽

Adhesively Bonded Joints ◽

Nonlinear Viscoelastic ◽

Structural Failures ◽

Updated Lagrangian

Abstract A good understanding of the process of adhesion from the mechanics viewpoint and the predictive capability for structural failures associated with adhesively bonded joints require a realistic modeling (both constitutive and kinematic) of the constituent materials. The present investigation deals with the development of an Updated Lagrangian formulation and the associated finite element analysis of adhesively bonded joints. The formulation accounts for the geometric nonlinearity of the adherends and the nonlinear viscoelastic behavior of the adhesive. Sample numerical problems are presented to show the stress and strain distributions in bonded joints.

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