Hi,
Try this:
!conda update -n base conda -y
!conda update --all --yes
!conda config --add channels conda-forge
!conda install vtk mayavi -y
!conda install -c conda-forge sfepy -y
!jupyter nbextension install --py mayavi --user
!jupyter nbextension enable mayavi --user --py
!conda install qt pyqt -y !conda install scikit-umfpack -y
import gmsh
gmsh.initialize()
gmsh.option.setNumber("General.Terminal", 1)
gmsh.model.add("Ex_p51_api")
p1 = gmsh.model.geo.addPoint( 0, 0, 1.0)
p2 = gmsh.model.geo.addPoint(75, 0, 1.0)
p3 = gmsh.model.geo.addPoint(0, 75, 1.0)
c1 = gmsh.model.geo.addCircleArc(p2, p1, p3)
l1 = gmsh.model.geo.addLine(p1,p2)
l2 = gmsh.model.geo.addLine(p3,p1)
l3 = gmsh.model.geo.addCurveLoop([c1, l1, l2])
s1 = gmsh.model.geo.addPlaneSurface([l3])
gmsh.model.geo.synchronize()
gmsh.model.mesh.generate(2) #2D
gmsh.option.setNumber("Mesh.SaveAll", 1)
gmsh.write("Ex_p51_original.mesh")
#gmsh.fltk.run() #pour visualiser le résultat
gmsh.finalize()
import os
python_prog = '"/home/francois/anaconda3/bin/python"'
convert_2d_prog = ("/home/francois/anaconda3/lib/python3.8/site-packages/sfepy/"+
"script/convert_mesh.py --2d")
ordre = " ".join([python_prog,convert_2d_prog,"Ex_p51_original.mesh",
"Ex_p51.mesh"])
os.system(ordre)
0
def define():
from sfepy.mechanics.matcoefs import stiffness_from_youngpoisson
from sfepy.mechanics.matcoefs import lame_from_youngpoisson
from sfepy.discrete.fem.utils import refine_mesh
from sfepy import data_dir
# Fix the mesh file name if you run this file outside the SfePy directory.
filename_mesh = "Ex_p51.mesh"
refinement_level = 0
filename_mesh = refine_mesh(filename_mesh, refinement_level)
output_dir = '.' # set this to a valid directory you have write access to
young = 2000.0 # Young's modulus [MPa]
poisson = 0.4 # Poisson's ratio
options = {
'output_dir' : output_dir,
}
regions = {
'Omega' : 'all',
'Left' : ('vertices in (x < 0.001)', 'facet'),
'Bottom' : ('vertices in (y < 0.001)', 'facet'),
'Top' : ('vertex 2', 'vertex'),
}
materials = {
'Asphalt' : ({'D': stiffness_from_youngpoisson(2, young, poisson)},),
'Load' : ({'.val' : [0.0, -1000.0]},),
}
fields = {
'displacement': ('real', 'vector', 'Omega', 1),
}
equations = {
'balance_of_forces' :
"""dw_lin_elastic.2.Omega(Asphalt.D, v, u)
= dw_point_load.0.Top(Load.val, v)""",
}
variables = {
'u' : ('unknown field', 'displacement', 0),
'v' : ('test field', 'displacement', 'u'),
}
#conditions limites
ebcs = {
'XSym' : ('Bottom', {'u.1' : 0.0}),
'YSym' : ('Left', {'u.0' : 0.0}),
}
solvers = {
'ls' : ('ls.scipy_direct', {}),
'newton' : ('nls.newton', {
'i_max' : 1,
'eps_a' : 1e-6,
}),
}
return locals()
import inspect
lines = inspect.getsource(define)
with open("definition.py","w") as f:
f.write(lines)
from sfepy.discrete import Problem
problem = Problem.from_conf_file("definition.py")
#Setup output directory according to options above.
problem.setup_default_output()
problem.solve()
sfepy: left over: ['stiffness_from_youngpoisson', 'lame_from_youngpoisson', 'refine_mesh', 'data_dir', 'refinement_level', 'output_dir', 'young', 'poisson', 'verbose', '_filename']
sfepy: reading mesh (/mnt/c/Users/Francois/Notebooks/Python/Ex_p51.mesh)...
sfepy: number of vertices: 76
sfepy: number of cells:
sfepy: 2_3: 122
sfepy: ...done in 0.01 s
sfepy: creating regions...
sfepy: Omega
sfepy: Left
sfepy: Bottom
sfepy: Top
sfepy: ...done in 0.01 s
sfepy: equation "balance_of_forces":
sfepy: dw_lin_elastic.2.Omega(Asphalt.D, v, u)
= dw_point_load.0.Top(Load.val, v)
sfepy: using solvers:
ts: no ts
nls: newton
ls: ls
sfepy: updating variables...
sfepy: ...done
sfepy: setting up dof connectivities...
sfepy: ...done in 0.00 s
sfepy: matrix shape: (134, 134)
sfepy: assembling matrix graph...
sfepy: ...done in 0.00 s
sfepy: matrix structural nonzeros: 1592 (8.87e-02% fill)
sfepy: updating variables...
sfepy: ...done
sfepy: updating materials...
sfepy: Asphalt
sfepy: Load
sfepy: ...done in 0.00 s
sfepy: nls: iter: 0, residual: 1.000000e+03 (rel: 1.000000e+00)
sfepy: residual: 0.02 [s]
sfepy: matrix: 0.00 [s]
sfepy: solve: 0.01 [s]
sfepy: nls: iter: 1, residual: 6.306955e-12 (rel: 6.306955e-15)
sfepy: solved in 1 steps in 0.05 seconds
State
from sfepy.base.base import output
output('results saved in %s' % problem.get_output_name(suffix = '*'))
sfepy: results saved in ./Ex_p51.*.vtk
from sfepy.postprocess.viewer import Viewer
view = Viewer(problem.get_output_name())
view(vector_mode='warp_norm', rel_scaling=2,is_scalar_bar=True,is_wireframe=True)
Hi, Time for me to explore Sfepy, again! Examples on the website are great, but I would prefer working in more familiar and interactive environments, like Jupiter notebooks. If anyone here has worked in such environments and would share a notebook to start with, it would be greatly appreciated. Thanks! Serge-Étienne Parent _______________________________________________ SfePy mailing list -- sfepy@python.org To unsubscribe send an email to sfepy-leave@python.org https://mail.python.org/mailman3/lists/sfepy.python.org/ Member address: francoisbrest@hotmail.fr