scholarly journals Unified methodology for characterisation of global fatigue damage evolution in adhesively bonded joints

2020 ◽  
Vol 14 (53) ◽  
pp. 26-37
Author(s):  
Jaiswal Pankaj ◽  
Rahul Iyer Kumar ◽  
Wim De Waele
Keyword(s):  
Fatigue Damage ◽  
Damage Evolution ◽  
Bonded Joints ◽  
Adhesively Bonded ◽  
Adhesively Bonded Joints

Fatigue Life Estimation of Adhesively Bonded Scarf Joints Based on a Continuum Damage Mechanics Model

2005 ◽  
Vol 13 (4) ◽  
pp. 359-370 ◽  
Author(s):  
Makoto Imanaka ◽  
Makoto Taniguchi ◽  
Tatuyuki Hamano ◽  
Masaki Kimoto
Keyword(s):  
Fatigue Strength ◽  
Damage Evolution ◽  
Damage Mechanics ◽  
Estimation Method ◽  
Adhesive Layer ◽  
Epoxy Adhesive ◽  
Bonded Joints ◽  
Adhesively Bonded ◽  
Adhesively Bonded Joints ◽  
Scarf Joints

An estimation method of fatigue strength of adhesively bonded joints with various stress triaxialities in the adhesive layer has been proposed based on a damage evolution model for high cycle fatigue. To realize various triaxial stress states, fatigue test was conducted for adhesively bonded butt and scarf joints with various scarf angles bonded by a rubber-modified epoxy adhesive. An equation for estimating the damage evolution in the adhesive layer of the butt and scarf joints was derived from the damage model, where undefined parameters in the equation were determined by comparing the experimentally obtained damage evolution curves of the butt joints with the estimated damage evolution curves. Furthermore, an equation for the estimation of fatigue strength was derived under the assumption that fatigue failure occurs when the damage variable reaches to a critical value. When compared the experimental S-N data of scarf joints with the estimated ones, the estimated fatigue strengths agree well with the experimental data with various scarf angles. This finding suggests that the CDM model is applicable for estimating fatigue strength of adhesively bonded joints with different stress triaxialities.

scholarly journals Predicting fatigue damage in adhesively bonded joints using a cohesive zone model

2010 ◽  
Vol 32 (7) ◽  
pp. 1146-1158 ◽  
Author(s):  
H. Khoramishad ◽  
A.D. Crocombe ◽  
K.B. Katnam ◽  
I.A. Ashcroft
Keyword(s):  
Fatigue Damage ◽  
Cohesive Zone ◽  
Cohesive Zone Model ◽  
Zone Model ◽  
Bonded Joints ◽  
Adhesively Bonded ◽  
Adhesively Bonded Joints

scholarly journals Fatigue Damage of Composite/Composite Adhesively Bonded Joints

1993 ◽  
Vol 2 (4) ◽  
pp. 096369359300200
Author(s):  
A. Roy ◽  
J.L. Gacougnolle ◽  
J. Petit ◽  
D. Gamby
Keyword(s):  
Fatigue Damage ◽  
Main Crack ◽  
Mixed Mode ◽  
Bonded Joints ◽  
Concentration Zone ◽  
Adhesively Bonded ◽  
Adhesively Bonded Joints ◽  
Polyester Composite ◽  
Ultimate Failure ◽  
Propagation Stage

In this experimental study, the fatigue damage of glass-polyester composite/composite adhesively bonded joints is investigated. The study shows that the damage consists of a main crack appearing in a stress concentration zone in the adherends which then grows in the laminate first layer in a mixed mode propagation stage to the final stage leading to the ultimate failure.

Nonlinear Viscoelastic Finite Element Analysis of Adhesive Joints

1988 ◽  
Vol 16 (3) ◽  
pp. 146-170 ◽  
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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