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no change in postprocessing coordinates
Posted 2010年1月29日 GMT-5 06:28 1 Reply
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Hi,
I use Comsol Multiphysics with Matlab. Now I'd like to obtain the postprocessing coordinates, but I have some problems:
I tried:
coord = postcoord(fem,'edim',1,'grid',3,'dl',bnd2);
where bnd2 contains all the 120 boundarys I'd like to have the data from. If I plot the obtained coordinates there are huge distances between the single points and it seems as if the coordinates are just from the half geometry.
Morover, if I want to obtain coordinates from bnd1 (which are also 120 boundarys) - I model anterior and posterior surfaces - than I get the same coordinates as for bnd2.
And last but no least, if I change a parameter e.g.
fem.appl{1}.equ.E={'1.5e6'};
and after apply
fem.xmesh = meshextend(fem);
fem.sol = femstatic(fem);
then the coordinates are still the same. (I changed E from 2.0e11 to 1.5e6. That should cause a big change.)
Please, if you have any hint or tip for me so let me know.
I am new here and would be very grateful for your help.
I use Comsol Multiphysics with Matlab. Now I'd like to obtain the postprocessing coordinates, but I have some problems:
I tried:
coord = postcoord(fem,'edim',1,'grid',3,'dl',bnd2);
where bnd2 contains all the 120 boundarys I'd like to have the data from. If I plot the obtained coordinates there are huge distances between the single points and it seems as if the coordinates are just from the half geometry.
Morover, if I want to obtain coordinates from bnd1 (which are also 120 boundarys) - I model anterior and posterior surfaces - than I get the same coordinates as for bnd2.
And last but no least, if I change a parameter e.g.
fem.appl{1}.equ.E={'1.5e6'};
and after apply
fem.xmesh = meshextend(fem);
fem.sol = femstatic(fem);
then the coordinates are still the same. (I changed E from 2.0e11 to 1.5e6. That should cause a big change.)
Please, if you have any hint or tip for me so let me know.
I am new here and would be very grateful for your help.
1 Reply Last Post 2010年1月31日 GMT-5 12:41
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Posted:
1 decade ago
Hi
I have understood that the "postcoord" gives you the geemtry and mesh coordinates and not the deformed results (except in case of moving mesh - ALE and frames, when you specify them).
Should'nt you use the "postinterp" instead to access the solution and not the initial conditions ?
have a look again at "command.pdf"
Good luck
Ivar
I have understood that the "postcoord" gives you the geemtry and mesh coordinates and not the deformed results (except in case of moving mesh - ALE and frames, when you specify them).
Should'nt you use the "postinterp" instead to access the solution and not the initial conditions ?
have a look again at "command.pdf"
Good luck
Ivar