SfePy June 2015

sfepy@python.org

9 participants
12 discussions

Material Parameters of Individual Nodes
by derj...＠web.de 11 Apr '22

11 Apr '22

Hello! It's a great tool you built there! I'd like to use it for some kind of topology optimisation. Is there an "idiomatic" way to set the material parameters of individual nodes? Thank you very much! JonnyB

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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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new interactive example with time stepping
by Robert Cimrman 13 Mar '17

13 Mar '17

Hi, I have just updated the time stepping solvers in sfepy for interactive use, as demonstrated in the new example [1]. For basic use, ignore the probing code - the time stepper can be used as simply as: tss = SimpleTimeSteppingSolver({'t0' : 0.0, 't1' : 100.0, 'n_step' : 11}, problem=problem) tss.init_time() for step, time, state in tss(): pass r. [1] http://sfepy.org/doc-devel/examples/diffusion/time_poisson_interactive.html

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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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error run_tests.py in lubuntu15.04
by pyontaku14 22 Jul '15

22 Jul '15

Dear experts, I installed sfepy in lubuntu15.04. I tried ./run_tests.py --debug and encounterd the error as attached file. Could you tell me what to do for this error? Best regards, Takuo Fujita

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orthogonal mesh
by Giuseppe Romano 29 Jun '15

29 Jun '15

Dear All, does SteFy handle non-orthogonal meshes? I mean, does it include the non-orthogonal correction and skewness correction? Thanks in advance, Giuseppe

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Finding tetrahedra according the known vertices in the .mesh file
by Kid Guo 29 Jun '15

29 Jun '15

Dear Experts, Now I have a question,I am trying to find the tetrahedra according the vertices in the face in a .mesh file. For examples,in the file,I know the vertices on right boundry, and I want to find the tetrahedra, it consists 4 vertices. How can I solve it? r. kid

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error run_tests.py
by pyontaku14 25 Jun '15

25 Jun '15

Dear Experts, My nickname is pyontaku14. I tried run_tests.py with Python2.7.8 on Windows8.1. The result of "python run_tests.py --filter-less" is the attached 150621_sfepy_test_filter.txt. The result of "python run_tests.py --debug" is the attached 150621_sfepy_test_debug.txt. "AttributeError: SetSource" is in 50621_sfepy_test_debug.txt. I could not understand what this error is. I guess all required modules are installed. Could you please tell me what to do? Any help is welcome. Best regards,

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Problem with testing sfepy with numpy 1.9.2 ...
by Robert Pezer 25 Jun '15

25 Jun '15

After normal inplace build process (ubuntu 12.04 64bit, Anaconda+python 2.7.9) I run testing and got one failure in module test_mesh_smoothing.py Here is the output of the command: % test_mesh_smoothing.py <<< directory: tests, test files: 1 <<< tests/test_mesh_smoothing.py sfepy: left over: ['verbose', '__builtins__', '_filename', '__file__', 'get_volume', '__package__', '__doc__', '__name__', 'TestCommon', 'op'] >>> test instance prepared (1 test(s)) sfepy: reading mesh [line2, tri3, quad4, tetra4, hexa8] (/home/rpezer/Software/sfepy/meshes/3d/cylinder.vtk)... sfepy: ...done in 0.02 s >>> <type 'exceptions.AttributeError'> Traceback (most recent call last): File "run_tests.py", line 206, in <module> main() File "run_tests.py", line 197, in main run_tests(stats, dirname, [filename]) File "run_tests.py", line 131, in run_tests n_fail, n_total, test_time = run_test(conf_name, options) File "run_tests.py", line 99, in run_test ok, n_fail, n_total = test.run(options.debug) File "/home/rpezer/Software/sfepy/sfepy/base/testing.py", line 58, in run ret = test_method() File "/home/rpezer/Software/sfepy/tests/test_mesh_smoothing.py", line 45, in test_mesh_smoothing vol0 = get_volume(conn, mesh.coors) File "/home/rpezer/Software/sfepy/tests/test_mesh_smoothing.py", line 26, in get_volume vols = mul * dets_fast(mtx.copy()) File "/home/rpezer/Software/sfepy/sfepy/linalg/utils.py", line 80, in dets_fast lapack_routine = lapack_lite.dgetrf AttributeError: 'module' object has no attribute 'dgetrf' I checked the file sfepy/linalg/utils.py and found out that numpy 1.9.2 [MKL] lapack_lite really has no dgetrf (older version do have) attribute. It seems to me easy to fix but maybe I am too naive. Any suggestions?

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Problems viewing results
by Dennis Perchak 10 Jun '15

10 Jun '15

Hi, I have the Enthought Canopy Python distribution and am new to using SfePy. I was trying to work through the examples and had a problem with viewing the results. The package manager in Canopy already has SfePy Version 2014.4 Build 6. Whenever I try to use the Viewer to look at results, I get: ERROR:mayavi.core.common:Exception Traceback (most recent call last): File "/Users/dennis/Library/Enthought/Canopy_64bit/User/lib/python2.7/site-packages/mayavi/core/source.py", line 216, in _handle_children obj.start() File "/Users/dennis/Library/Enthought/Canopy_64bit/User/lib/python2.7/site-packages/mayavi/core/filter.py", line 108, in start self.update_pipeline() File "/Users/dennis/Library/Enthought/Canopy_64bit/User/lib/python2.7/site-packages/mayavi/filters/set_active_attribute.py", line 133, in update_pipeline self._update() File "/Users/dennis/Library/Enthought/Canopy_64bit/User/lib/python2.7/site-packages/mayavi/filters/set_active_attribute.py", line 149, in _update input.update() AttributeError: 'AlgorithmOutput' object has no attribute 'update' I have no idea what the problem is. It happens on my Mac (running Yosemite) and also my Windows 7 machine. I would greatly appreciate any help with this. Thanks. Dennis

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SfePy June 2015