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
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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
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
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
Hello everyone,
I have a question about sfepy's definition of regions.
I want to define a region Omega_1, wich is a subregion of Omega. So I type :
regions = {
'Omega' : 'all',
'Omega_1' : ('vertices of group 1', 'cell', Omega),}
, where group 1 is a group of vertices.
Question : wich field element P1 will be created over the region Omega_1 ?
More precisely, I have a triangle (A,B,C), with node A in group 1, but the
other ones outside of group 1.
Will the finite element wich is worth 1 at A, and 0 at B and C be in my
field element basis ?
In wich file are the basis functions for the fe fields defined ?
Dimitri
Hi Mark,
yes this error is annoying, and I am not aware of a solution that actually
works for sfepy (failed myself to install sfepy in a W10 virtual box). I assume
you tried the solutions proposed for example in [1, 2, 3]? I do not think that
I have tried everything, so in case there is something you did not try, could
you give it a shot?
r.
[1]
https://support.enthought.com/hc/en-us/articles/204469210-Windows-Unable-...
[2]
https://stackoverflow.com/questions/24380442/getting-error-unable-to-find...
[3] https://github.com/cython/cython/wiki/CythonExtensionsOnWindows
On 04/07/2016 05:36 PM, 'Mark Shart' via sfepy-devel wrote:
> Hi everyone,
>
> I try to install sfepy for window10 following the instruction with
> python(xy).
> I can accomplish everything till I need to compile sfepy. The I get the
> error:Unable to find vcvarsall.bat.
> I installed the MS C++ Compiler for Python 2.7 but its not working. I also
> tried other C++ compiler... but still this error drives me crazy.
> How can I fix this? Please help :\
>
Hi everyone,
I'm trying to install sfepy on windows10 with python(xy) as suggested, but
get the following error when compiling python setup.py build_ext --inplace
--compiler=mingw32
$ python setup.py build_ext --inplace
igakit (optional) is missing; you may get run-time errors
petsc4py (optional) is missing; you may get run-time errors
mpi4py (optional) is missing; you may get run-time errors
pymetis (optional) is missing; you may get run-time errors
pysparse (optional) is missing; you may get run-time errors
running build_ext
running build_src
build_src
building library "sfepy_common" sources
building library "sfepy_terms" sources
building extension "sfepy.discrete.common.extmods._fmfield" sources
building extension "sfepy.discrete.common.extmods.mappings" sources
building extension "sfepy.discrete.common.extmods.assemble" sources
building extension "sfepy.discrete.common.extmods.cmesh" sources
building extension "sfepy.discrete.common.extmods.crefcoors" sources
building extension "sfepy.discrete.common.extmods._geommech" sources
building extension "sfepy.discrete.fem.extmods.bases" sources
building extension "sfepy.discrete.fem.extmods.lobatto_bases" sources
building extension "sfepy.discrete.iga.extmods.igac" sources
building extension "sfepy.linalg.extmods.crcm" sources
building extension "sfepy.terms.extmods.terms" sources
building data_files sources
build_src: building npy-pkg config files
customize Mingw32CCompiler
customize Mingw32CCompiler using build_clib
customize Mingw32CCompiler
customize Mingw32CCompiler using build_ext
extending extension 'sfepy.discrete.common.extmods._fmfield' defined_macros
with [('__SDIR__', '\'"sfepy\\discrete\\common\\extmods"\''),
('SFEPY_PLATFORM', 1)]
extending extension 'sfepy.discrete.common.extmods.mappings' defined_macros
with [('__SDIR__', '\'"sfepy\\discrete\\common\\extmods"\''),
('SFEPY_PLATFORM', 1)]
extending extension 'sfepy.discrete.common.extmods.crefcoors'
defined_macros with [('__SDIR__',
'\'"sfepy\\discrete\\common\\extmods"\''), ('SFEPY_PLATFORM', 1)]
extending extension 'sfepy.discrete.common.extmods._geommech'
defined_macros with [('__SDIR__',
'\'"sfepy\\discrete\\common\\extmods"\''), ('SFEPY_PLATFORM', 1)]
extending extension 'sfepy.discrete.fem.extmods.bases' defined_macros with
[('__SDIR__', '\'"sfepy\\discrete\\common\\extmods"\''), ('SFEPY_PLATFORM',
1)]
extending extension 'sfepy.discrete.fem.extmods.lobatto_bases'
defined_macros with [('__SDIR__',
'\'"sfepy\\discrete\\common\\extmods"\''), ('SFEPY_PLATFORM', 1)]
extending extension 'sfepy.terms.extmods.terms' defined_macros with
[('__SDIR__', '\'"sfepy\\terms\\extmods"\''), ('SFEPY_PLATFORM', 1),
('__SDIR__', '\'"sfepy\\discrete\\common\\extmods"\'')]
building 'sfepy.discrete.common.extmods._fmfield' extension
compiling C sources
C compiler: gcc -O2 -Wall -Wstrict-prototypes
compile options: '-D__SDIR__='"sfepy\discrete\common\extmods"'
-DSFEPY_PLATFORM=1 -D__SDIR__='"sfepy\discrete\common\extmods"'
-DSFEPY_PLATFORM=1 -DNPY_MINGW_USE_CUSTOM_MSVCR -D__MSVCRT_VERSION__=0x0900
-Isfepy\discrete\common\extmods
-IC:\Python27\lib\site-packages\numpy\core\include -IC:\Python27\include
-IC:\Python27\PC -c'
extra options: '-g -O2'
gcc -O2 -Wall -Wstrict-prototypes
-D__SDIR__='"sfepy\discrete\common\extmods"' -DSFEPY_PLATFORM=1
-D__SDIR__='"sfepy\discrete\common\extmods"' -DSFEPY_PLATFORM=1
-DNPY_MINGW_USE_CUSTOM_MSVCR -D__MSVCRT_VERSION__=0x0900
-Isfepy\discrete\common\extmods
-IC:\Python27\lib\site-packages\numpy\core\include -IC:\Python27\include
-IC:\Python27\PC -c sfepy\discrete\common\extmods\_fmfield.c -o
build\temp.win32-2.7\Release\sfepy\discrete\common\extmods\_fmfield.o -g -O2
Found executable C:\MinGW\bin\gcc.exe
g++ -shared
build\temp.win32-2.7\Release\sfepy\discrete\common\extmods\_fmfield.o
-LC:\Python27\libs -LC:\Python27\PCbuild -Lbuild\temp.win32-2.7
-lsfepy_common -lpython27 -lmsvcr90 -o
sfepy\discrete\common\extmods\_fmfield.pyd
Found executable C:\MinGW\bin\g++.exe
C:\Python27\libs/libpython27.a: error adding symbols: File format not
recognized
collect2.exe: error: ld returned 1 exit status
error: Command "g++ -shared
build\temp.win32-2.7\Release\sfepy\discrete\common\extmods\_fmfield.o
-LC:\Python27\libs -LC:\Python27\PCbuild -Lbuild\temp.win32-2.7
-lsfepy_common -lpython27 -lmsvcr90 -o
sfepy\discrete\common\extmods\_fmfield.pyd" failed with exit status 1
Can anyone help me please?
On 04/02/2016 02:50 PM, Kid Guo wrote:
> Thank you for your reply.
> Last time I did not have a good description of my problem,but I made some
> changes on your script and got some useful results for me.
>
> Now I have a new question,I have got all points(such as,x=0.1)
> and corresponding cells,if you run the modified script,you can see it,
> there are 11 cells on the face where x=0.1,
OK, so you want cells containing faces that are in x=0.1 plane, right? I have
modified the script to find those - there are 16 of them - there was a mistake
in your script, as your cells have 4 vertices, not only three.
> I want to get the values(p and u) of the four points of each unit instead
> of all cells.
See the attachment.
r.
> Any ideas?
>
> Thank you advance.
>
> 在 2016年4月1日星期五 UTC+8下午11:07:34，Robert Cimrman写道：
>>
>> On 04/01/2016 05:08 AM, Kid Guo wrote:
>>> I am trying to Obtain the required data from a *.vtk file.
>>> For example,
>>> 1. I want to output the all points where{x=0.1},such as (0.1,0.1,0.1)
>>> 2. I want to obtain the CELLS including points in step1;such as
>>> (12,13,56,23)
>>> 3. I want to obtain the values(p,u) in the *.vtk file
>>
>> The attached script should show you how to do what you want.
>>
>>> <
>> https://lh3.googleusercontent.com/-edlklG7xlrM/Vv3mDxDgzDI/AAAAAAAAACo/Ba...>
>>
>>
>> This seems to correspond to an old version of sfepy - the script is w.r.t.
>> the
>> latest version.
>>
>>> I am using ipython,but I have no idea.
>>
>> Yeah, these low-level features are not extensively documented - one has to
>> know
>> what to look for.
>>
>> r.
>>
>>> Here is the attachment
>>>
>>>
>>> What should I do?
>>>
>>> Thank you advance.
>>
>>
>
I am trying to Obtain the required data from a *.vtk file.
For example,
1. I want to output the all points where{x=0.1},such as (0.1,0.1,0.1)
2. I want to obtain the CELLS including points in step1;such as
(12,13,56,23)
3. I want to obtain the values(p,u) in the *.vtk file
<https://lh3.googleusercontent.com/-edlklG7xlrM/Vv3mDxDgzDI/AAAAAAAAACo/Ba...>
I am using ipython,but I have no idea.
Here is the attachment
What should I do?
Thank you advance.
