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I have funding for software development to provide a UMAT interface in the parallel versions of the code from Smith I.M. and Griffiths D.V. "Programming the Finite Element Method", 4th Edition, Wiley, 2004.



I would be interested to hear about any open source UMATs available for download. I'd also like to hear from anyone who might like to use their closed source UMATs in a parallel environment.



The funding has been awarded by the UK National HPC Service HECToR to encourage the greater use of HECToR for Structural Engineering.

My PhD student Peter Falkingham (who graduated 15 December 2010) has published some interesting papers on Dinosaur Trackways. These might be of interest to those teaching Soil Mechanics, to give some examples that might be more stimulating than foundation design or traditional geotechnical engineering.

References below:

Hi,

I'm using ABAQUS for my research o soil-pile interaction. For the initial modeling of soil-pile interface I have used the "Hard" pressure-over closure relationship. According to the definition negative pressure is not possible with that type of normal contact behavior. But when I check the contact pressure still I can see that negative pressure is applied. What could be the reason?

Thanks,

Thanu

hello everyone!

I have a parametric model in ABAQUS. One of the surfaces has many faces and to set a displacement, for example, I need to select all the faces on this surface. One of the ways  to pick them is to use faces.findAt(), but the problem is that there are over 100 faces on this surface and I don't know their coordinates because I used "random" function to create them. Do you know how can I specify the region? I've tried to pick the whole surface instead but I couldn't...

Replay file always gives a mask.

Hello to all,

Iam in desperate need of advanced tutorials of ansys in non linear field. Can anybody if having please mail me to contactkirthan [at] gmail.com (contactkirthan[at]gmail[dot]com).

Thanking you

Kirthan.L.J

Minneapolis, Minnesota, July 25-29, 2011.

Deadline for abstract submission: Januray 31, 2011.

This symposium (11.4) will address the use of new computational techniques (from atomic to continuum scale) to uncover fundamental science in materials interfaces and their role in mechanical properties. Theoretical and computational advances as well as the application of existing methods to new cases where interface information is important (e.g. nanograined materials) are in the scope of this session. Areas of interest include but are not limited to:

Hi,

In an ABAQUS 2D-planar model, is it possible to vary the material properties spatially, say defining modulus (E) as a function of coordinates, E = f(x,y)? One way is to use *DISTRIBUTION feature, but that allows variation based on element-sets and does not allow varying the material properties as function of coordinates. If anyone has solved this or similar problem kindly suggest.

Thank you

Vaibhav

hello everybody

i want to ask when i use isotropic hardening law in umat abaqus. i used uhard subroutine.

my question can be so simple.

how we will enter plasticity values in abaqus. i think in user material after other constant we enter them like this

for exemple:

props(1) young

props(2) poisson ratio

props(3) strain value for the curve maybe 0

props(4) corresponding yield stress value

props(5) other strain value

......

.....

is this right???

thank`s in advance