Mailman 3 February 2015 - 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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Elasticity with periodic boundary condition
by Ronghai Wu 03 Jun '15

03 Jun '15

Dear Robert Cimrman, I am trying to implement elastic inclusion problem. It is a 2D mesh with an inclusion(and therefore eigenstrain) at mesh centre. I developed my codes(as attached) based on following two previous issues. https://groups.google.com/forum/#!searchin/sfepy-devel/Ronghai/sfepy-devel/… https://groups.google.com/forum/#!searchin/sfepy-devel/elastic$20periodic$2… But I have troubles with the boundary conditions. I would like to try two kinds of boundary conditions: (1) Top and bottom boundaries: uniaxial loading(or surface traction). Left and Right boundaries: periodic. I used "dw_tl_surface_traction" but some errors come out. (2) Periodic at all boundaries. I think there must be a easy way for this, but failed to find out in SfePy documentation and mailing list. Could you please give me some help. Thanks. Regards Ronghai

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ANN: SfePy 2015.1
by Robert Cimrman 26 Feb '15

26 Feb '15

I am pleased to announce release 2015.1 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 or by the isogeometric analysis (preliminary support). It is distributed under the new BSD license. 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 -------------------------- - support for multiple fields in isogeometric analysis - redesigned handling of solver parameters - new modal analysis example 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): Lubos Kejzlar, Vladimir Lukes

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repo rewrite
by Robert Cimrman 26 Feb '15

26 Feb '15

Hi all, I screwed up some commits in the near past so now I have used the git weapon of mass destruction a.k.a. GFB. The history is changed, so, please, do not pull to your repositories! Use a fresh clone, or fetch, instead. Sorry for the inconvenience. r.

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Grabbing the mass matrix
by Sukhbinder Singh 04 Feb '15

04 Feb '15

Hi this might be a silly question, but am not able to find a way to get the mass matrix from the problem in sfepy. I can get the stiffness matrix K but how to get the Mass matrix M. Any help is appreciated. Thanks

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Macport safety run_tests.py bug
by davidamb...＠gmail.com 03 Feb '15

03 Feb '15

Using sfepy with python 2.7, MacPorts installation on Yosemite. Tried to run python run_tests.py but most tests failed. ran in debug mode and found that there was a problem finding certain dependent files: IOError: [Errno 2] No such file or directory: '/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/meshes/elements/2_3_2.mesh' Had a look at the directory structure and I think the correct directory it should have is: '/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/ sfepy/meshes/elements/2_3_2.mesh' When I modified one test case (test_cmesh.py) accordingly this seemed to solve the issue. Hope this is helpful. Dave

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