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Debonding simulation - XFEM fracture criterion - delamination

Submitted by davidrbmelo on
research
crack
delamination
composite
VCCT
XFEM fracture criterion
DCB test
direction
Hello

I am using Abaqus/CAE 6.10 to simulate a Debonding test (cohesive behavior for composite delamination). 
I ran a Abaqus debonding simulation example (from Abaqus online documentation - Abaqus Benchmark Manual - 2.7.1 Delamination analysis of laminated composites).

The Abaqus/Explicit three-dimensional model with surface-based traction-separation behavior used a surface contact interaction property with:
- default Cohesive behavior

Experiments in anti-plane deformation of thin films

Submitted by Thanasis Zisis on
research
thin film
anti-plane
out of plane deformation

Dear all,

I was curious whether there are any
experimental information and / or results regarding the out of plane (anti-plane)
deformation of (very) thin films. For example an elastic thin film subjected to anti-plane loading on its surface. Any other suggestions regarding possible applications of anti-plane loading conditions in thin films would be appreciated. 

 

Thanks a lot,

Thanasis

Happy new year 2014 - open access repository

Submitted by Stephane Bordas on
research
publications 2013; 2014; repository

Dear blog-readers,



As you may know, our research group has, with my leaving the UK, moved in part to Luxembourg, where I am now based. I am of course keeping close ties with Cardiff, where Pierre Kerfriden is now taking care of the group.



It has been a fun and productive year, and I thank you all for contributing to this through numerous discussions emanating from this blog. I wish you all the best for 2014, and hope that it will bring you joy in the work you do.



Best regards from Lausanne where we are enjoying a few days off.

Reading off data from output database file when UMAT is applied

Submitted by icin on
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Hi ~!
i tried to analyze stress-strain distribution when material is subject to self shrinkage due to drying.
first, i performed water diffusion analysis. second, i performed static analysis with predefined fields data 
from .odb file of the previous analysis results. and it was successful. 

but when i try to use subroutine 'UMAT', .odb file of the previous analysis becomes not availalbe to be read off.
the only thing changed to use 'UMAT' in input file is described below.

Harnessing Localized Ridges for High-Aspect-Ratio Hierarchical Patterns with Dynamic Tunability and Multifunctionality

Submitted by ChangyongCao on
research

Crack propagation in gusset plate subjected to dynamic stress time history

Submitted by mahendra18 on
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Fracture Mechanics Forum
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research

Hello everyone,

I want to analyse the inspection interval for the crack propagation in a gusset plate of a truss joint subjected to dynamic loading. I have the dynamic stress time history acting on the plate. Since I am new to abaqus I dont have much idea how to model the crack in the plate.Please kindly help me with this.

 

Thanks and regards,

Mahendra.

Can it produce negative damping when a rigid disc vibrating on a porous medium?

Submitted by Rui He on
research
porous medium
disc vibration
negative damping

 I tried to solve the problem
that a rigid disc under harmonic moments resting on a porous half-space, the
porous medium is modeled using Biot's theory, when I consider the disc as
totally impervious, I found from the numerical results that negative damping
appears when the permeability of the porous medium is very low at a small
exciting frequency. I have no idea whether this is possible, can someone give
me some suggestions? Thanks very much.  

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