Mailman 3 May 2014 - SfePy

Re: Torque
by Robert Cimrman 09 Mar '18

09 Mar '18

In examples/large_deformation/hyperelastic.py a rotation by displacements is applied. By using a similar function the vectors defining the force couples could be defined for dw_surface_ltr (IMHO). Does it make sense? r. ----- Reply message ----- From: "Andre Smit" <freev...(a)gmail.com> To: <sfepy...(a)googlegroups.com> Subject: Torque Date: Sat, Dec 18, 2010 05:10 What is the best way to apply a torque load to a model? -- Andre -- You received this message because you are subscribed to the Google Groups "sfepy-devel" group. To post to this group, send email to sfepy...(a)googlegroups.com. To unsubscribe from this group, send email to sfepy-devel...(a)googlegroups.com. For more options, visit this group at http://groups.google.com/group/sfepy-devel?hl=en.

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1D line elements in SfePy
by Nimish 22 Jan '16

22 Jan '16

I am currrently looking for FEM packages to help me solve a system of beams and columns, basically a collection of 1D bernoulli/timoshenko line elements. I started reading SfePy docs and i am getting the idea that doing the above is not really possible here, am i right? Are only 2D area elements permitted in SfePy? Or is there any direct support for solving 1D line elements too.. Cheers Nimish

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Python 3 compatibility
by Robert Cimrman 11 Aug '14

11 Aug '14

FYI: As SciPy 0.12.0 is out and one of the release highlights is "Support for Python 2 and Python 3 from the same code base (no more 2to3)", we can think seriously about updating SfePy in this respect as well, cf. [1]. r. [1] https://github.com/sfepy/sfepy/issues/164

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Mac installation instructions
by Robert Cimrman 07 Jul '14

07 Jul '14

Hi, any Mac users here able to help with [1]? r. [1] https://github.com/sfepy/sfepy/issues/264

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Verbosity
by Daniel Wheeler 29 May '14

29 May '14

Hi, I'm trying to use Sfepy in a Doctest example. It would be nice to turn off Sfepy output to reduce the noise in the Docs. The code I'm using is here, https://github.com/wd15/pymks/blob/993e4b43beed9db4ed0402b846b66d7723d8e361… I've managed to turn off most of the output using goptions['verbose'] = False and gen_block_mesh((Lx, Ly), shape, center, verbose=False) Unfortunately, the following still remains sfepy: matrix shape: (199, 199) sfepy: assembling matrix graph... sfepy: ...done in 0.00 s sfepy: matrix structural nonzeros: 5631 (1.42e-01% fill) I can't figure out how to turn off the above four lines. Any ideas? Thanks -- Daniel Wheeler

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Unable to download referenced documentation
by Gennadiy Rishkin 29 May '14

29 May '14

Hello, I've just been browsing through the Sfepy website and investigating its use. I wandered onto the fish heart section and tried to download the pdf thesis at the bottom of the page but it keeps timing out (so does the link). Is there an alternative link for its download or alternative way to obtain this? Regards Gennadiy

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Domain -> FEDomain
by Daniel Wheeler 28 May '14

28 May '14

Hi, I noticed that the name "Domain" has changed to "FEDomain". https://github.com/sfepy/sfepy/commit/3af511599110b22e327944b009b37acd3c35c… While this is probably a change for the better, I would recommend being very cautious about such changes. For example, it breaks code that I'm hoping to package and release at some stage. This seems to be an API change and Sfepy probably needs a policy for this. Maybe some discussion on the mailing list for example. In traditional release models with X.Y.Z release numbers, this would probably require changing the X value. I realize that Sfepy has rolling releases which is fine, but similar caution should probably be employed. Cheers, Daniel -- Daniel Wheeler

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Can SfePy be used to solve systems of non-linear ODEs using finite elements?
by drober...＠gmail.com 23 May '14

23 May '14

Perhaps it is a bit overkill but I am interested in using finite elements methods to solve systems of non-linear ODEs with complicated boundary conditions. Can SfePy be used to accomplish this? Cheers, David

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ANN: SfePy 2014.2
by Robert Cimrman 23 May '14

23 May '14

I am pleased to announce release 2014.2 of SfePy. Description ----------- SfePy (simple finite elements in Python) is a software for solving systems of coupled partial differential equations by the finite element method. The code is based on NumPy and SciPy packages. It is distributed under the new BSD license. This release brings a preliminary support for isogeometric analysis - a recently developed computational approach that allows using the NURBS-based domain description from CAD design tools also for approximation purposes similar to the finite element method. Home page: http://sfepy.org Mailing list: http://groups.google.com/group/sfepy-devel Git (source) repository, issue tracker, wiki: http://github.com/sfepy Highlights of this release -------------------------- - preliminary support for isogeometric analysis - improved post-processing and visualization script for time-dependent problems with adaptive time steps - three new terms For full release notes see http://docs.sfepy.org/doc/release_notes.html#id1 (rather long and technical). Best regards, Robert Cimrman and Contributors (*) (*) Contributors to this release (alphabetical order): Vladimír Lukeš

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Problem with the mesh while trying to solve the Navier Stokes equations with sfepy
by G 23 May '14

23 May '14

Hey, I try to simulate laminar flow in microfluidics (for now I just use a simple cube), in order to do this I tried to modify the definition file for the Navier_stokes example and creat my own mesh with GMSH. I saved the mesh file as m3d.mesh, removed the triangles and the edges and used the command /script/convert_mesh.py meshes/3d/m3d.mesh meshes/3d/micro3d.mesh -r2 in order to produce a "useable" mesh. Nevertheless when running simple.py with my definition file I receive the following error message: Sfepy: creating regions... sfepy: Omega parsing failed : nodes in x>1.99999) .... etc. ...pyparsing.ParseException: Expected ''all'' ( at char 0),( line:1, col: 1) I am not really a computer scientist but I guess that the problems comes from the mesh or the way I define my outlet region. If someone as any idea how I could fix my script I would be really happy and thanksful. Best regards Guillaume

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