Accurate simulation of delamination growth under mixed-mode loading using cohesive elements: Definition of interlaminar strengths and elastic stiffness

2010 ◽  
Vol 92 (8) ◽  
pp. 1857-1864 ◽  
Author(s):  
A. Turon ◽  
P.P. Camanho ◽  
J. Costa ◽  
J. Renart
Keyword(s):  
Mixed Mode ◽  
Elastic Stiffness ◽  
Mixed Mode Loading ◽  
Cohesive Elements ◽  
Delamination Growth ◽  
Definition Of

Simulation of delamination growth in multidirectional laminates under mode I and mixed mode I/II loadings using cohesive elements

2014 ◽  
Vol 116 ◽  
pp. 509-522 ◽  
Author(s):  
Libin Zhao ◽  
Yu Gong ◽  
Jianyu Zhang ◽  
Yuli Chen ◽  
Binjun Fei
Keyword(s):  
Mixed Mode ◽  
Mode I ◽  
Cohesive Elements ◽  
Delamination Growth

scholarly journals Strength Prediction of Adhesively-Bonded Scarf Repairs in Composite Structures under Bending

2010 ◽  
Vol 636-637 ◽  
pp. 233-238 ◽  
Author(s):  
Raul D.S.G. Campilho ◽  
Marcelo F.S.F. de Moura ◽  
A.M.G. Pinto ◽  
Dimitra A. Ramantani ◽  
J.J.L. Morais ◽  
...  
Keyword(s):  
Composite Structures ◽  
Mixed Mode ◽  
Failure Modes ◽  
Numerical Study ◽  
Adhesive Layer ◽  
Elastic Stiffness ◽  
Cohesive Elements ◽  
Adhesively Bonded ◽  
Element Analysis ◽  
Cohesive Laws

This work reports on the experimental and numerical study of the bending behaviour of two-dimensional adhesively-bonded scarf repairs of carbon-epoxy laminates, bonded with the ductile adhesive Araldite 2015®. Scarf angles varying from 2 to 45º were tested. The experimental work performed was used to validate a numerical Finite Element analysis using ABAQUS® and a methodology developed by the authors to predict the strength of bonded assemblies. This methodology consists on replacing the adhesive layer by cohesive elements, including mixed-mode criteria to deal with the mixed-mode behaviour usually observed in structures. Trapezoidal laws in pure modes I and II were used to account for the ductility of the adhesive used. The cohesive laws in pure modes I and II were determined with Double Cantilever Beam and End-Notched Flexure tests, respectively, using an inverse method. Since in the experiments interlaminar and transverse intralaminar failures of the carbon-epoxy components also occurred in some regions, cohesive laws to simulate these failure modes were also obtained experimentally with a similar procedure. A good correlation with the experiments was found on the elastic stiffness, maximum load and failure mode of the repairs, showing that this methodology simulates accurately the mechanical behaviour of bonded assemblies.

scholarly journals Selected Aspects of Cohesive Zone Modeling in Fracture Mechanics

Metals ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 302
Author(s):  
Wiktor Wciślik ◽  
Tadeusz Pała
Keyword(s):  
Cohesive Zone ◽  
Mixed Mode ◽  
Review Paper ◽  
Failure Process ◽  
Cohesive Zone Modeling ◽  
Mixed Mode Loading ◽  
Cohesive Models ◽  
Cohesive Modeling ◽  
Zone Modeling ◽  
Intensive Development

This review paper discusses the basic problems related to the use of cohesive models to simulate the initiation and development of failure in various types of engineering issues. The most commonly used cohesive zone models (CZMs) are described. Recent achievements in the field of cohesive modeling are characterized, with particular emphasis on the problem of mixed mode loading, the influence of the strain rate, the stress state triaxiality, and fatigue. A separate chapter of the work is devoted to the identification of cohesive parameters. Examples of the use of CZMs for the analysis of the fracture and failure process in various applications, both on the macro and microscopic scale, are given. The directions of CZMs development were indicated as well as the issues that are currently under particularly intensive development.

scholarly journals Dynamic Crack Curving under Mixed-Mode Loading.

1994 ◽  
Vol 60 (571) ◽  
pp. 720-727
Author(s):  
Akira Simamoto ◽  
Makoto Kosai ◽  
Albert Kobayashi S.
Keyword(s):  
Mixed Mode ◽  
Dynamic Crack ◽  
Mixed Mode Loading ◽  
Crack Curving

Failure initiation at a blunt V-notch tip under mixed mode loading

2008 ◽  
Vol 149 (2) ◽  
pp. 143-173 ◽  
Author(s):  
Elad Priel ◽  
Zohar Yosibash ◽  
Dominique Leguillon
Keyword(s):  
Mixed Mode ◽  
Mixed Mode Loading ◽  
Failure Initiation ◽  
Notch Tip
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