Mailman 3 May 2016 - SfePy

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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Robin boundary condition
by Nicolas DELAN 15 Jun '16

15 Jun '16

Hello, I work on an aerothermal problem and i need to impose a robin boundary condition. Do anyone know if this boundary condition is implemented in sfepy ? Thanks,

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windows build problem fix (missing vcvarsall.bat etc.)
by Robert Cimrman 21 May '16

21 May '16

Any windows users around who could try [1] and report back results? r. [1] https://github.com/sfepy/sfepy/pull/325

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Need help to start with sfepy
by Nicolas DELAN 13 May '16

13 May '16

Hi everyone, I am a new user of sfepy, i need it to compute the diffusions equations on a turbine blade. But i am a little lost with the boundary conditions. I have tried to impose some dirichlet boundary conditions on some points of the edges of the airfoil but it keeps crashing with exceptions. For example in my .mesh file i have this at the line where my point is defined 0.1 0.5 25 (x) (y) So I have written this in the region definition regions = { 'Omega' : 'all', 'point25' : ('vertices of group 25', 'edge'), } I have tried before with : refions = { 'Omega' : 'all', 'extrados' : ('vertices in (y>0.1) ', 'facet'), 'intrados' : ('vertices in (y<0)', 'facet'), } and it was giving resuls (it was only for test purpose) I don't understand very well how to define the boundary conditions (and to be honest the hole configuration file despite the documentation) So if somebody could help me, i would be grateful ! cordially, Nicolas DELAN

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ANN: SfePy 2016.2
by Robert Cimrman 12 May '16

12 May '16

I am pleased to announce release 2016.2 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 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 -------------------------- - partial shell10x element implementation - parallel computation of homogenized coefficients - clean up of elastic terms - read support for msh file mesh format of gmsh For full release notes see http://docs.sfepy.org/doc/release_notes.html#id1 (rather long and technical). Best regards, Robert Cimrman on behalf of the SfePy development team --- Contributors to this release in alphabetical order: Robert Cimrman Vladimir Lukes

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Validation of acoustic analysis
by pyontaku14 10 May '16

10 May '16

Hi, I tried ahlv100a, code_aster acoustic example as attached. ahlv100 http://www.code-aster.org/doc/v11/en/man_v/v8/v8.22.100.pdf The pressure distribution is antiphase compared to theory and code_aster. Is the sfepy result correct? Thanks, Takuo Fujita

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How to update Sfepy to the new version
by pyontaku14 06 May '16

06 May '16

Hi, I have the version of 2015.3. I would like to update it to 2016.1. Could you tell me how to update Sfepy to the new version? Do I have to install the new version from scratch? If so, do I have to remove the old version in advance and install the new version? Thanks, Takuo Fujita

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postprocessing
by Nina Halabi 05 May '16

05 May '16

Dear Robert I could overcome my previous problems of not having root privileges, so it all worked up till the command: ./postproc.py cylinder.vtk This echoed the below message: Exception In /home/gmh/.local/lib/python2.7/site-packages/mayavi-4.4.4.dev0-py2.7-linux-x86_64.egg/mayavi/sources/vtk_xml_file_reader.py:86 AttributeError: 'AlgorithmOutput' object has no attribute 'point_data' (in get_all_attributes) Traceback (most recent call last): File "/home/gmh/.local/lib/python2.7/site-packages/traits-4.6.0.dev354-py2.7-linux-x86_64.egg/traits/trait_notifiers.py", line 340, in __call__ self.handler( *args ) File "/home/gmh/sfepy/sfepy/postprocess/dataset_manager.py", line 177, in _dataset_changed self._assign_attribute.input = value File "/home/gmh/.local/lib/python2.7/site-packages/traits-4.6.0.dev354-py2.7-linux-x86_64.egg/traits/trait_handlers.py", line 104, in _read_only name, class_of( object ) ) TraitError: The 'input' trait of an AssignAttribute instance is 'read only'. sfepy: point scalars t at [-0.05 -0.02 0. ] sfepy: range: -2.00e+00 2.00e+00 l2 norm range: 1.06e-02 2.00e+00 No handlers could be found for logger "mayavi.core.common" I'm using Python 2.7.8 if that's relevant to the current issue. Thanks again Cheers

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