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cohesive zone model

Georges Limbert's picture

Research Fellow position in Computational Mechanics, Department of Mechanical Engineering, University of Southampton, UK.

Job Purpose: To make a leading research contribution to an industry-sponsored project on state-of-the-art finite element techniques to simulate needle penetration into skin working with the PI, A/Prof. Georges Limbert. You will join the national Centre for Advanced Tribology at Southampton (nCATS). In addition, you will work closely with the sponsor and contribute to the planning, writing and submission of reports and research publications.


Full Time Fixed Term for 18 months

Salary:   £31,406 to £38,587 per annum

Emilio Martínez Pañeda's picture

Non-local plasticity effects on notch fracture mechanics (code included)

I hope some of you find this work interesting, the code with the control algorithm (Segurado and Llorca, 2004) to avoid convergence problems in cohesive zone model analyses of crack propagation can be downloaded from (documentation and Abaqus input files are provided).

Non-local plasticity effects on notch fracture mechanics

Emilio Martínez-Pañeda, Susana del Busto, Covadonga Betegón 

Theoretical and Applied Fracture Mechanics (2017)

cohesive zone element

Are there any papers/documents on one dimensional bar problem with a cohesive zone element formulation? It should be a zero length non-linear spring in this case right? I am more interested in setting up the problem from the virtual work principles rather than a discussion of the results.


Emilio Martínez Pañeda's picture

A cohesive zone framework for environmentally assisted fatigue (code included)

I hope some of you find this work interesting, the code with the cohesive zone model for fatigue can be downloaded as a user element (UEL) subroutine for Abaqus from

A cohesive zone framework for environmentally assisted fatigue

Susana del Busto, Covadonga Betegón, Emilio Martínez Pañeda

Engineering Fracture Mechanics (2017)

ndaphalapurkar's picture

Postdoc position – Modeling dynamic fracture and fragmentation

A Postdoctoral fellowship is available at The Johns Hopkins University, Baltimore, U.S.A. in the area of fracture and fragmentation under dynamic loading conditions. The potential candidate should have a Ph.D. in an engineering discipline, a strong background in fracture mechanics and extensive computational modeling experience working with the finite element methods or some other numerical method with application to solid mechanics.

What are the regular iteration steps of cohesive model based FEM for crack problems


         I'm now start to learn cohesive zone model based FEM for crack problems. According the a regular coehsize model (bilinear for example), the relative displacement and the cohesive stress are both unknwon, so iteration is required. My question is that what are the regular iteration steps?



Fixation and Mechanical Properties of Implanted Cartilage Replacements - An overview of three recently published papers

Partial- and
full-thickness cartilage lesions of the knee caused by trauma, disease or joint
instability are a common disorder affecting people of all ages. Implanted
cartilage replacements (ICR) have the potential to overcome the limitations of
conventional treatment methods and are a promising approach to restore
functionality of the joint. In spite of some success in engineering
cartilaginous tissue, inferior biomechanical and biochemical properties of ICR
compared to native articular cartilage (AC) and inadequate quality of fixation

Problem Modeling JKR contact using Abaqus

Hello Everyone,

I have been working on solving contact problems relating to fibrillar adhesives over the past 3 yrs of my PhD work. In the past, I used Comsol FEM to model contact interactions by implementing the Dugdale-Barenblatt traction separation law at the contact interface. 

Cohesive (zero thickness): NODE NUMBERING MIDE NOT BE CORRECT (Abaqus)

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Hi all,


 I'm trying to model a 2D cohesive layer with a zero-thickness in Abaqus (6.11.2)
The shape of the layer is a quarter circle.


When modelling this i first create a cohesive layer with a certain thickness.
I then convert the part of this cohesive layer to a orphan mesh, then edit the mesh, such that a zero thickness layer is created.


However when i want to submit the job i get the following error message:


Tuncay Yalcinkaya's picture

Full scholarships available at European Commission funded workshop on fracture and damage mechanics in Antalya / Turkey

European Commission' s JRC (Joint Research Centre) is organizing the 2nd workshop on physics based modeling of material properties and experimental observations in collaboration with TOBB University of Economics and Technology. The workshop will be held in Antalya/Turkey on 15-17 May 2013, and the special focus will be fracture and damage mechanics.

Problems with 3D contact/contact status

hi all,

I have some problems with contact elements in ANSYS.

My model is a cube of matrx containing two fibres with periodic boundary conditions. The interface between Matrix and Fibre is modeled with contact elements and cohesive zone law. 

In 2-D everything works out just fine when bringing up displacement in x-direction. Here is a movie I made of the Contact Status over the loadsteps:

rdalmeya's picture

Dugdale -Barenblatt cohesive zone model outside the contact zone

Dear sir
        I am Ravi dalmeya doing Phd from Indian Institute of Technology,Kanpur (India). I am doing work on adhesive elastic wavy  thin film. I have completed 2-D Hertzian contact between cylinder and elastic half space using Abaqus. Now i want to apply Dugdale-Barenblatt cohesive zone model outside the contact zone and i do not know  how to apply  Dugdale-Barenblatt cohesive zone model outside the contact zone.Can you give me some suggestion?

Thanking you

Need recommendation of PhD courses

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Hi I am a PhD. Student at Aalborg University at Department for Mechanical and Manufacturing Engineering in Denmark. In short my PhD project treats modeling delamination damage in laminated fibrous composite structures under quasi-static and cyclic loading. I am having a hard time finding good relevant PhD-courses so now I am turning to you to ask you if you can recommend any good courses falling under the following criteria:

Simulating crack growth in Ansys implementing Cohesive Zone Model (CZM)

Hello, everyone!

Could you, please, help me with the following issue?

I’m trying to simulate a crack growth in an anisotropic media using cohesive zone model (CZM), and the results I get do not agree with my expectations, based on a common sense and simple estimations.

As I don’t yet feel myself on a safe ground with APDL, I make use of Ansys Mechanical, implementing command objects where needed.

Praveen's picture

Literature on CZM and it's implementation through FEM

Can anyone suggest some basic literature on Cohesive Zone Modeling and it's implementation through FEM? Most of the literature, I find, is on traction-separation behaviour and some simulation using a FEM package. I 'm interested to learn it's mathematical formulation and implementation through FEM. Can anyone help me?


Cohesive elements parameters

Dear All,

I modelled a beam with a hole and used cohesive elements on the possible crack plane.

When I run the model in 2D, it works very well and I can get the results pretty good.

Why running the same model in 3D (making 3D model and running it) has caused me a headach for a long time and I can not

get the results?

Any idea highly appreciated,



Problems with cohesive zone. Does it make sence to use them here?

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Hey I've got a beam and between two different materials i'm thinking to
put a cohesive zone with "weaker" material properties. Does it make
sense to use cohesive zone models?


My model is looking like this now. But I don't know what's wrong. It
seems taht the whole force/displacement is lost in the cohesive zone. 

If somebody can help that would be very nice

 here the pic:

Laurent Champaney's picture

cohesive zone modeling of interface fracture : comparisons


(for completing R. Huang's post : node/7396).

A  few years ago, some colleages (from Italy, UK and Brazil) and I proposed some comparisons of the behavior of cohesize zone models. This was presented during ECCM 2004. The paper is attached.

Cohesive material zone model and ABAQUS subroutines


I'd like to ask if anybody knows if it is possible to use an ABAQUS usersubroutine that could vary some parameters (τmax, kn or ks etc) of the cohesive zone model of ABAQUS with the vertical pressure applied on the interface. The new ability of ABAQUS to support cohesive behaviour in contact surfaces seems very interesting and useful, however how could somebody simulate the interface under a compression - shear regime that may follow a Mohr-Coulomb type behaviour?


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