New question #269063 on Yade:
https://answers.launchpad.net/yade/+question/269063
Hello, everybody.
I’m new in Yade and I need help to simulate following situation.
A) Given: metallic rectangular plate with sides parallel or
perpendicular to coordinate axes (the plate may consist 2 differ materials)
such as in attached/linked picture.
B) Boundary conditions:
1. On face ABCD applied tensile force F parallel
to OY axis
2. Face KGHO is fixed.
C) Objective is: to compute distribution of strain, stress and
displacement values on the plate.
As I understand in DEM it can be done through computing these values for each
sphere in the plate.
I tried to use:
- UniaxialStrainer but it doesn’t allow to apply force (or stress) just
constant strain.
- TriaxialStressController but it works only for compression not for
tension (or may be I do something wrong)
- Also i set permanent force for spheres on the boundary ABCD (but I
think it’s not correct because it’s necessary to set force like pressure for
every point on the surface and size of spheres may be different, or may be I’m
wrong again)
- In addition, I used constant velocity for boundary spheres but it’s
just for testing and doesn’t deserve any attention.
I compute stress and strain with TesselationWrapper().computeDeformations() and
bodyStressTensors() functions, displacement with displ(), then save values
manually to VTK file. I didn't use VTKExporter() because at a later stage I'll
need another file extension to save the result data.
Now I represent the plate as a set of uniform arrows of spheres with equal
radius connected one by one:
spheres=[]
for i in range(0, 16):
for j in range(0, 16):
for k in range(0, 2):
id =
O.bodies.append(sphere([i+0.5,j+0.5,k+0.5],material='mat_mod',radius=r))
Also I attached a link to executing file “example.py”, where I tried to test 4
variants described above to set boundary conditions (parameter “mode”).
I’ll be glad any help
with regards, Alexander
Pisture of the plate: [img]http://s18.postimg.org/omoiobfcp/pic.jpg[/img]
Executing file: <a href=http://www.filedropper.com/example_5>
--
You received this question notification because you are a member of
yade-users, which is an answer contact for Yade.
_______________________________________________
Mailing list: https://launchpad.net/~yade-users
Post to : [email protected]
Unsubscribe : https://launchpad.net/~yade-users
More help : https://help.launchpad.net/ListHelp
