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delamination

Simulation of composite delamination caused by impact

Submitted by zhang922 on
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Computational Mechanics Forum
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impact
delamination
contact

Hi All,

While using LS-DYNA to simulate the impact damage of composites, I have a question about modeling.

I plan to create the model by solid element. Each ply has one element in the thickness direction. The contact between plies is *contact_automatic_surface_to_surface_tiebreak. My question is how to create separate ply models while using this contact. It is clear that common nodes are not allowed. So there might be two possibilities.

Finite Element Analysis of the Indentation-Induced Delamination of Bi-Layer Structures

Submitted by hasanzhong on
interface
indentation
finite element analysis
delamination
film

Delivered by Ingenta to:

University of Southern California

IP : 132.174.255.3

Sun, 29 Jul 2012 00:05:58

Contact deformation can cause local damage of mechanical structures and lead to structural failure

of mechanical devices. In this work, we use the finite element method to analyze the indentation-

induced delamination of a film-substrate structure and the critical tensile stress as the criterion to

determine local delamination on the interface between the film and the substrate. The simulation

Solver settings in Abaqus/S for delamination analysis with cohesive elements

Submitted by BrianBak on
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Computational Mechanics Forum
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research
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delamination
Abaqus/Standard
Cohesive elements
RIKS solver
Newton solver
Arc-length solver
solver settings

Hi 

 

I have different 3D models of laminates where I analyse the delamination propagation using zero thickness cohesive elements in Abaqus/Standard. My experience with the RIKS solver and Newton solvers are that they are extremely sensitive to even small changes in the step size settings as well as other solver settings. 

How to model delamination in laminated composites?

Submitted by praveenyr on
delamination

Hi,

  I'm Praveen doing my Master of Technology Project. I wanted to know how to model delaminated composites in ANSYS. Whether to use Teflon layer as delamination between the plies or creating air gap between the plies? And also wanted to know how to use cohesive zone elements or interface elements to create delamination. Can anyone help me? I ve attached images for references. 

A free program to generate interface elements in an existing FE mesh

Submitted by phunguyen on
software
fracture
delamination
zero thickness interface element

Hello all,



Last year when I started implementing interface elements to model material failure, I realized that the formulation is easy except how to generate a mesh with interface elements. I did a googling to search for such a free program. Amazingly, I did not find any although there are many researchers working on the fracture mechanics field.



So, I wrote a small object-oriented C++ program which reads a FE mesh, duplicates nodes and insert interface elements where asked. The program is able to



6th International Conference on Fracture of Polymers, Composites and Adhesives - Deadline extented

Submitted by Laure Ballu on
conference
delamination
Composites
adhesives
ductile energy dissipation
Fracture of Polymers
structural adhesives
Les Diablerets

The deadline for submitting abstracts has now been extended to 15 November. To submit, go to http://www.tc4pca.elsevier.com/abstractsubmission.asp

1st MUSIC Summer School on "Multiscale and Multiphysics Modelling of Interfaces"

Submitted by Hirschberger on
adhesion
molecular dynamics
delamination
friction
multiscale
damage
contact mechanics
summer school
interfaces
martensite
crystals
Multiphysics
phase boundaries
cohesion
laminates
thermomechanics
atomistic-continuum coupling
algorithms

The Graduate School MUSIC (Multiscale Methods for Interface Coupling) invites to its first Summer School on Multiscale and Multiphysics Modelling of Interfaces at Leibniz Universitaet Hannover, Germany, from 15 to 17 September 2010.

Cohesive behaviour for Interaction in Abaqus Explicit at the interface of materials

Submitted by Venkat Bharath on
research
interface
delamination
Composites
cohesive
sandwich
abaqus explicit

Hi,

I am working on effects of Blast Loading in sandwich composites using Abaqus. I want to incorporate Cohesive behaviour at the interface of the two materials in the sandwich composite structure i am analysing.

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