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Follower pressure on internal boundary + export line displacement in m-file
Posted 25 mars 2010, 17:44 UTC−4 2 Replies
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Hi,
I want to simulate the displacement of two elastic electrodes with an elastic material as dielectric. Doing this with the electrostatic module with moving mesh doesn't give a converged solution for higher electric fields.
So I want to model the electrostatic pressure as a follower pressure. Since the electrodes are embedded within the material, the pressure has to act on an internal boundary but the follower pressure seems to work only on external boundaries.
Does anybody know a way to solve this problem?
My second problem is, that I want to analyze the displacement of a line with matlab, so I need to export the displacement of a boundary. This is no problem with the GUI, but how can I get this done within the m-file? (i.e. z-displacement of boundary x)
Any advice is highly appreciated!
Best regards,
Jens
I want to simulate the displacement of two elastic electrodes with an elastic material as dielectric. Doing this with the electrostatic module with moving mesh doesn't give a converged solution for higher electric fields.
So I want to model the electrostatic pressure as a follower pressure. Since the electrodes are embedded within the material, the pressure has to act on an internal boundary but the follower pressure seems to work only on external boundaries.
Does anybody know a way to solve this problem?
My second problem is, that I want to analyze the displacement of a line with matlab, so I need to export the displacement of a boundary. This is no problem with the GUI, but how can I get this done within the m-file? (i.e. z-displacement of boundary x)
Any advice is highly appreciated!
Best regards,
Jens
2 Replies Last Post 26 mars 2010, 07:58 UTC−4
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Posted:
1 decade ago
for your second problem
1 do it with the gui
2 save the corresponding file as an m.file
3 open the m.file in a text editor and locate the corresponding lines you will have the syntax.
jf
1 do it with the gui
2 save the corresponding file as an m.file
3 open the m.file in a text editor and locate the corresponding lines you will have the syntax.
jf
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Posted:
1 decade ago
Thank you for your reply, but in this case saving the file as *.m doesn't work. I only get the following:
postcrossplot(fem,1,[5], ...
'lindata','w', ...
'cont','internal', ...
'title','z-displacement [m]', ...
'axislabel',{'Arc-length','z-displacement [m]'}, ...
'refine','auto');
When I execute the m-file, nothing happens.
It is possible to work around this by using the postinterp command and a for loop to evaluate a line point by point. Getting the displacement for a boundary directly would however be much more elegant. Especially when the boundary isn't a line but a bezier curve.
Best regards,
Jens Brunne
postcrossplot(fem,1,[5], ...
'lindata','w', ...
'cont','internal', ...
'title','z-displacement [m]', ...
'axislabel',{'Arc-length','z-displacement [m]'}, ...
'refine','auto');
When I execute the m-file, nothing happens.
It is possible to work around this by using the postinterp command and a for loop to evaluate a line point by point. Getting the displacement for a boundary directly would however be much more elegant. Especially when the boundary isn't a line but a bezier curve.
Best regards,
Jens Brunne