[ GiDlist ] nodal coordinates

[maik at talkevax.ucsd.edu]

Hi,

I'm dealing with surfaces of sliders in computer harddrives. I' using GiD
for meshgenerating. The surfaces are three dimensional. when I use the
Write Mesh command, my nodes have Three coordinates, if I use the command

*loop nodes
*NodesNum *NodesCoord
*end

in the ".bas" file for the same model Gid writes only the x & y coordinate.
How can I solve this problem.

The differences in the level of two adjacent surfaces are pretty small.
(0.001 mm)
Is there an option that has two be set?
I don't have problems if the surfaces levels are bigger.

Maik Duwensee



Maik Duwensee

____________________________________________

University of California San Diego
Center for Magnetic Recording Research, 0401
9500 Gilman Drive
La Jolla, CA 92093-0401


mail: maik at talkelab.ucsd.edu
Phone: (858)-534-2882

http://www-talkelab.ucsd.edu/

____________________________________________

[Miguel A. de Riera Pasenau]

maik at talkevax.ucsd.edu wrote:

Hi,

I'm dealing with surfaces of sliders in computer harddrives. I' using GiD
for meshgenerating. The surfaces are three dimensional. when I use the
Write Mesh command, my nodes have Three coordinates, if I use the command

*loop nodes
*NodesNum *NodesCoord
*end

in the ".bas" file for the same model Gid writes only the x & y coordinate.
How can I solve this problem.

The differences in the level of two adjacent surfaces are pretty small.
(0.001 mm)
Is there an option that has two be set?
I don't have problems if the surfaces levels are bigger.

Maik Duwensee

Maik Duwensee


The problem is that GiD uses an epsilon on the Z axis to determine if
the problem is a 2D one or a 3D one (if all the geometry is defined
inside this epsilon, the problem is a 2D one).

But you can get the three coordinates of the nodes with something like this:

*loop nodes
*NodesNum *NodesCoord(1) *NodesCoord(2) *NodesCoord(3)
*end nodes


--------------------------------------------------------------------------------
Miguel A. de Riera Pasenau miguel at cimne.upc.es http://gid.cimne.upc.es

[maik at talkevax.ucsd.edu]

thanks for the prompt reply,
unfortunately it doesn't seem to work. I get three coordinates, but the
third one is always zero. I checked with the write mesh option and there
the z values are different from zero.
what else can I do?

regARDS Maik




At 11:18 AM 5/2/00 +0200, you wrote:
maik at talkevax.ucsd.edu wrote:

Hi,

I'm dealing with surfaces of sliders in computer harddrives. I' using GiD
for meshgenerating. The surfaces are three dimensional. when I use the
Write Mesh command, my nodes have Three coordinates, if I use the command

*loop nodes
*NodesNum *NodesCoord
*end

in the ".bas" file for the same model Gid writes only the x & y coordinate.
How can I solve this problem.

The differences in the level of two adjacent surfaces are pretty small.
(0.001 mm)
Is there an option that has two be set?
I don't have problems if the surfaces levels are bigger.

Maik Duwensee

Maik Duwensee


The problem is that GiD uses an epsilon on the Z axis to determine if
the problem is a 2D one or a 3D one (if all the geometry is defined
inside this epsilon, the problem is a 2D one).

But you can get the three coordinates of the nodes with something like this:

*loop nodes
*NodesNum *NodesCoord(1) *NodesCoord(2) *NodesCoord(3)
*end nodes


---------------------------------------------------------------------------
-----
Miguel A. de Riera Pasenau miguel at cimne.upc.es
http://gid.cimne.upc.es


Maik Duwensee

____________________________________________

University of California San Diego
Center for Magnetic Recording Research, 0401
9500 Gilman Drive
La Jolla, CA 92093-0401


mail: maik at talkelab.ucsd.edu
Phone: (858)-534-2882

http://www-talkelab.ucsd.edu/

____________________________________________