For using "fix mesh/surface/stress/servo" I have to implement mesh (file filename.stl).
How can I do that?
I do not input mesh in my simulation.
Is there any other ways?
Thanks a lot in advance,
A project by DCS Computing and CFDEMresearch
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AGl | Wed, 10/09/2013 - 08:44
> I do not input mesh in my
> I do not input mesh in my simulation.
Why then you need mesh/surface/stress/servo?
rasoul | Wed, 10/09/2013 - 22:50
mesh/surface/stress/servo
I implement "fix xwalls1 all wall/gran/hertz/history primitive type 1 xplane ${XL}" in 6 direction for bounding my simulation domain and I use "mesh/surface/stress/servo" for adding stress (psi) to the one surface/edge of a simulation domain (box) which is poured by particles.
Mr. Kloss suggested me to use this command for doing that.
AGl | Thu, 10/10/2013 - 07:19
mesh
As far as I know "mesh/surface/stress/servo' can control mesh only.
ckloss | Thu, 10/10/2013 - 10:39
>>As far as I know "mesh
>>As far as I know "mesh/surface/stress/servo' can control mesh only.
Correct - but mesh walls can do anything that can be done with primitive walls
Christoph
rasoul | Sun, 10/13/2013 - 12:07
"mesh/surface/stress/servo" using primitive walls
How can I implement "mesh/surface/stress/servo" using primitive walls?
I say this because in the "mesh/surface/stress/servo" command, we have to use "File Filename.stl", but I do not have any .stl file in my simulation and I control the simulation domain by primitive walls.
I am looking forward to hearing from you.
PaulWinkler | Mon, 11/04/2013 - 15:47
Hi,
Hi,
if you want to simulate a stress controlled compression, you have to replace your primitive walls by meshes. Build your mesh in gmsh or any other program. Only ASCII .stl files are supported (imho) yet. You can even edit them with an text editor, syntax is easy to learn. Load the mesh and use it as wall, now you can use mesh/surface/stress/servo in the proper way.
If you just want to move your primitive to do a simulation controlled by displacement, use fix move.
Regards
Paul
rasoul | Mon, 11/04/2013 - 20:55
ERROR: Mesh error
Hi,
I implemented mesh walls (stl file), but I faced an error. This is about unit system.
"ERROR: Mesh error: dimensions too small - use different unit system (multi_node_mesh_parallel_I.h536"
If anyone knows its reason, I am looking forward to know that.
Regards,
Rasoul
PaulWinkler | Tue, 11/05/2013 - 16:19
Hi,
Hi,
what unit system are you using? SI? The meshes are in 3D?
Regards
Paul
rasoul | Tue, 11/05/2013 - 23:16
SI
Hi,
Yes, I am using SI and my meshes is 3D.
I am looking forward to hearing you.
Sincerely,
Rasoul
PaulWinkler | Wed, 11/20/2013 - 11:24
Hi,
Hi,
can you post you mesh please? Since you just need two triangles it should be rather short.
Regards,
Paul
wangyin47@gmail.com | Wed, 07/09/2014 - 16:24
further question on the 'mesh/surface/stress/servo'
Hi, there
How could it keep the pressure constant on the meshed wall as the lateral wall area increases during compression in the tri-axial compression test?
And another thing, how to implement it for a cylinder sample?
cheers