Determination of failure envelope of functionally graded adhesive bonded joints by using mixed mode continuum damage model and response surface method

In this paper, the traditional finite element analysis is combined with the statistical method in order to consider the mixed mode failure characteristics of functionally graded adhesively bonded joint. The mixed mode continuum damage model is applied considering the variation of different material...

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Bibliographic Details
Published in:International journal of adhesion and adhesives 2021-04, Vol.106, p.102815, Article 102815
Main Authors: Kim, Myong-Ho, Hong, Hyon-Sik, Kim, Yong-Chol
Format: Article
Language:English
Subjects:
Adhesive bonding
Adhesive joints
Adhesive strength
Bonded joints
Bonding strength
Crack propagation
Damage assessment
Failure load
Finite element method
Functionally graded adhesive bonded joint
Functionally gradient materials
Mixed mode continuum damage model
Parameters
Regression analysis
Regression models
Response surface method
Response surface methodology
Shear strength
Statistical analysis
Structural failure
Taguchi method
Taguchi methods
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Summary:In this paper, the traditional finite element analysis is combined with the statistical method in order to consider the mixed mode failure characteristics of functionally graded adhesively bonded joint. The mixed mode continuum damage model is applied considering the variation of different material parameters in the functionally graded adhesive layer and validated through some numerical examples of SLJs using ABAQUS UMAT. Taguchi method is adopted to consider the effect of different material parameters on the overall failure load of adhesively bonded joint, leading to the most influence of adhesive shear strength on the structural failure. Moreover, the response surface method (RSM) is combined with the mixed mode continuum damage model in order to determine the failure envelope of functionally graded adhesive joint and study the effect of different geometrical and material parameters numerically. The linear regression model is used to evaluate the effect of different parameters and predict the optimal condition in the design space. The current methodology enables to predict the failure behaviour including the overall failure load and the crack propagation path in the adhesive layer in the functionally graded adhesive joints with sufficient accuracy.
ISSN:0143-7496
1879-0127
DOI:10.1016/j.ijadhadh.2021.102815