[GiDlist] GaussPoints &format **.msh

[Calogero Fontana]

Dear GiD Team,
the file mesa.msh is, more or less, the same of the file example.post.msh,which is in the manual.
So,i realize that format **.msh is equal to format **.post.msh
But when i create an object, i obtain this file.msh:
3 4 4 0 0 = what do these fields describe?
1 0 0 0 0 0 1 0 =
4.949747 4.949747 10.000000
2 0 0 0 0 0 1 0
3.413231 4.949747 10.000000
3 0 0 0 0 0 1 0
..... ..... .... ..... ..... ...
..... .... .... ..... ..... ....
1824 0 0 0 0 1 2 0 =
48 65 77 56 32 45 54 39
1825 0 0 0 0 1 2 0
1036 1072 1173 1141 998 1047 1157 1123

I think that maybe this is the old format, but i cannot try the meaning of every field in the manual. In this last case, can i obtain,from the old format, the new format?


2)In postprocessing the GaussPoints are introducted:
- what do they conceptual represent?
- what are their utitity?
- what is the conceptual difference between internal and given?

Thanks in advance!
Calogero.
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[Miguel A. de Riera Pasenau]

Hi,
this 'file.msh' is inside the file.gid project directory, no?
if so, this file contains information about the mesh in the preprocess part.
inside this file, together with information related to the mesh: conectivities,
element types, etc., there is also information about the interrelation to its
geometrical entites, dependencies, and more. The format of this internal file
has nothing in common to the one of the Postprocess.

The gauss points represent integration points inside an element which helps
to solve the equation of the analysis.
The posistion of these integration points are determined by its
'natural coordinates', kind of coordinates relatives to a canonical element.
In gid there are some predefined 'natural coordinates' for gauss points
( look at http://www.gidhome.com/support/GaussPoints.gif )
which are called 'internal' because they are internal to GiD.
If some developer/engineer uses a gauss points definition which does not
match to these 'internal' ones, can enter its own natural coordinates,
so they 'give' the natural coordinates to GiD.
For more information look at http://www.gidhome.com/support/gid_16.subst#SEC241

Hope it helps

miguel

Calogero Fontana wrote:

Dear GiD Team,
the file mesa.msh is, more or less, the same of the file example.post.msh,which is in the manual.
So,i realize that format **.msh is equal to format **.post.msh
But when i create an object, i obtain this file.msh:
3 4 4 0 0 = what do these fields describe?
1 0 0 0 0 0 1 0 =
4.949747 4.949747 10.000000
2 0 0 0 0 0 1 0
3.413231 4.949747 10.000000
3 0 0 0 0 0 1 0
..... ..... .... ..... ..... ...
..... .... .... ..... ..... ....
1824 0 0 0 0 1 2 0 =
48 65 77 56 32 45 54 39
1825 0 0 0 0 1 2 0
1036 1072 1173 1141 998 1047 1157 1123

I think that maybe this is the old format, but i cannot try the meaning of every field in the manual. In this last case, can i
obtain,from the old format, the new format?


2)In postprocessing the GaussPoints are introducted:
- what do they conceptual represent?
- what are their utitity?
- what is the conceptual difference between internal and given?

Thanks in advance!
Calogero.

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

[VSayako Willy]

Hi Miguel
I attached the file again so that you can check.
In file .res the ComponentNames are displayed only
the
"Displacement" but not the "INFLineDispl" and
"INFLineStress". Actually the values OnGaussPoints of
my results are on the end node for Beam element.
1________________2

I don't know whether I defined correctly or not for
the GaussPoint case.

Regards

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[Miguel A. de Riera Pasenau]

Hi,

thanks, now i can read the project.
in the result file the 'INFLineDispl' vector result
belongs to the 'Infline' analysis.

Under the 'View Results-Default analysis/step' you'll
see the two analysis you have created:
'Infline' and 'Moving load'
by default, GiD selects the last analysis/step.
So if you want to do a c.fill of 'INFLineDispl',
first of all you have to select the 'Infline', step 1,
as 'Default analysis/step'. Or use the Windows-View results window.

Looking at the results file, you have defined
GaussPoints "Beams" for linear elements for the mesh
with name "TwoNodElem" ( http://www.gidhome.com/support/gid_16.subst#SEC241 )
but this mesh does not exist: as the mesh comes from the
preprocess, it takes the name of the layer ( or material depending on
the value of Utilities-Variables-PropertyToPost in the right menu),
and this name, in this project, is 'Layer0'.

So you can:
define the gauss points for all the beam elements (without giving a 'mesh_name')

GaussPoints "Beams" ElemType Linear

or use the name of the layer, or material, ( more problematic as the user can
change the names of layers, or the assignement of materials).

GaussPoints "Beams" ElemType Linear "Layer0"

i should print more warning messages to help the users in this topic . . .
hope it helps,

miguel

VSayako Willy wrote:

Hi Miguel
I attached the file again so that you can check.
In file .res the ComponentNames are displayed only
the
"Displacement" but not the "INFLineDispl" and
"INFLineStress". Actually the values OnGaussPoints of
my results are on the end node for Beam element.
1________________2

I don't know whether I defined correctly or not for
the GaussPoint case.

Regards

__________________________________
Do you Yahoo!?
Yahoo! SiteBuilder - Free, easy-to-use web site design software
http://sitebuilder.yahoo.com

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

[VSayako Willy]

Many thanks Miguel
Ah..now I got all the points and understand when
and how to use the "Mesh_name". I think I should
create the new Menu for my own output menus..


Best Regards

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