[Numpy-discussion] ANN: SfePy 2013.3

Robert Cimrman cimrman3 at ntc.zcu.cz
Wed Sep 18 15:21:01 EDT 2013

Dear Josè,

On 09/18/2013 07:10 PM, Josè Luis Mietta wrote:
> Dear Robert.
> Im intresting in modeling mechanical deformation of magnetorheological
> elastomers (material formed by inorganic chains inserting in a polymeric
> matrix -see figure 2 in the attached file-). The inorganic chais are like
> pearl necklace (are formed by saligned pheres ).
> Can I use this tool (SfePy) for modeling the mechanical deformation (i.e.:
> shape deformation by appling a force in longitudinal and transversal
> direction respect to the inorganic chains)?

I guess so :) You are interested in modeling a single chain, not the whole 
microstructure, right? (BTW. if you are interested in modeling the whole "box" 
with many chains, check [1]).

> How can I do that?

These are general steps, not particular to sfepy:

First you need to create a FE mesh out of the CT data. There are probably many 
packages that can do that. I am familiar (and know it works) with [2], which 
has been created by Vladimir Lukes, another sfepy developer.

Then you need to define the problem - specify boundary conditions, choose FE 
approximation, apply loads and finally solve and visualize.

> Im a newby user of python and I dont know anything about simple finite
> elements analysis. What documentation (books or other) do yo recommend for
> my introduction in this topic?

Check the wiki page [3] and possibly the references given there.

If you have other questions, we can discuss off-list, or on the sfepy mailing 
list [4].

Best regards,

[1] http://parfe.sourceforge.net/
[2] http://sfepy.org/dicom2fem/
[3] http://en.wikipedia.org/wiki/Finite_element_method
[4] https://groups.google.com/forum/#!forum/sfepy-devel

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