GiD forum

Hello everybody,

I just downloaded the tochnog problemtype a couple of minutes ago.
after creating a surface i found that, when assigning materials, the
material name was 'GROUP1', 'GROUP2', . . . Mmm, curious . . .
The only property of these materials were the 'group type' entries.
Very stange, mmmmmmm
For conditions, the situation was almost the same.
Looking into the definition of conditions 'tochnog.cnd' and 'tochnod.mat'
does not clarify the situation.

After looking into Tochnog's website, in the same 'download' section were
i downloaded tochnog, i found an entry:

"· If you want to print the Tochnog-GID manual or view it with a postscript viewer, download a postscript Tochnog-GID manual
file . The A4 format for Unix Tochnog-GID postscript manual file is tngid.ps.gz. The letter format for Unix Tochnog-GID
postscript manual file is tngidletter.ps.gz (suited for US postscript printing). The A4 format for Microsoft Windows
Tochnog-GID postscript manual file is tngidps.zip. The letter format for Microsoft Windows Tochnog-GID postscript
manual file is tngidletterps.zip (suited for US postscript printing). Uncompress the postscript manual file just like the
source
distribution file."

After downloading the poscript version, i see under the section 'Generate mesh from within GiD':

"
· Choose in GID 'data' then 'Project type'. Choose 'tochnog'.
· Generate geometris in GiD.
· Assign conditions. This will later be used to generate 'bounda_unknown' and 'bound_time' records for Tochnog.
· Assign materials. This will later be used to generate 'group_type' records and records for Tochnog.
· . . ."

So, after reading that, from the third and fourth point my conclusion is that Tochnog uses this
'strange' properties encoding in materials and conditions to point to some internal, in Tochnog,
predefined Bound_Condition_groups and Material_groups with its right properties defined
( which were not told to GiD).
But i'm not a Tochnog user, so i don't know what 'group_type's, 'element_group's, etc., are.
If i were one, i would read carefully the Tochnog's manual.

More of a bit of reading, at the end of this section, i found:

" . . ., and the gid calculate wil not start a real calculation. You should finish the file with an editor
and then run tochnog in the usual way."

So, from this i guess that the problem type tochnog is not a 'ready-to-calculate' problem type, and that it needs a little
bit of work to accomplish this. GiD is used to prepare the geometry and mesh for tochnog.


I belive more information can be found inside Tochnog manual and its mailing list.
I'll be happy to see the tochnog problem type finished.

best regards

miguel


Attila wrote:

I've doing that for weeks, surfing on the Tochnog and GiD web sites and
reading manuals, and it seems that no one in GiD nor Tochnog is able to
answer my questions...

--------------------

Hi Attila, it is resposability of the problem type builder to provide how
useful will that problem type be, GiD provide a wide "window" to interface
with the analysis but is the problem type who have to open it.

I've being trying tochnog problem type, and regarding materials it seems
that
it only provide materials groups and the properties you are looking for are
implicit .

I guess you should surf inside http://tochnog.sourceforge.net/ what "grupe
type" imply
and/or contact the problem type builder if you don't find the expected
feature

best regards
Jorge Suit

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

Le Mercredi 27 Juin 2001 16:48, vous avez écrit :

" . . ., and the gid calculate wil not start a real calculation. You should
finish the file with an editor and then run tochnog in the usual way."

So, from this i guess that the problem type tochnog is not a
'ready-to-calculate' problem type, and that it needs a little bit of work
to accomplish this. GiD is used to prepare the geometry and mesh for
tochnog.

Exactly!!!
The problem type tochnog IS NOT a ready-to-calculate problem type. But
tochnog users have to know that in conbination with GiD, preparing a data
file for tochnog will be very much faster.
For the matter of materials, you create a group with the type "materi" and
you assign it on all elements with the same material. Later, with a text
editor, you add the material properties related to this group.
In fact, the boring work is to assign material to elements and tochnog
problem type does this and only this.

I agree that you can't use this problem type like a "black box".In my
opinion, it's a good way to understand exactly what you do.

I want to add that you can assign conditions very easily with the tochnog
problem type by knowing how does tochnog data files works. You specify up to
4 time values. If you don't want to use all values, keep the -1 values for
timeX and it will be skipped during the calculation file generation.

That's all, folks! Adeu y fins despres