[GiDlist] GID question

GiDList Archive 2013 - 2005
1

Hi,



How to get values in *.bas file from this kind of field:

QUESTION: field_name:(…,optional_value_i,…)

VALUE: #N# number_of_values … value_number … ?



Can you send me example ?



I created this control in material module as:



QUESTION: Discrete_points(Espilon,Sigma)

VALUE: #N# 2 0.0 000



I tried get value from 1th column like below:



*MatProp(Discrete_points) - this work, but it return number of matrix
elements (not all matrix)



*MatProp(Discrete_points(0)) or *MatProp(Discrete_points(Espilon)) not
work.



Regards

Michał Petaś

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2

You can write the values by rows for example with this code (with the index after a comma):

*for(i=1;i=N;i=i+2)
*Matprop(Discrete_points,*i) *Matprop(Discrete_points,*operation(i+1))
*end for

We added more information and an example to the ‘customization manual’ for next beta versions.

Enrique Escolano
----- Original Message -----
From: Michal Petas
To: gidlist at listas.cimne.upc.edu
Sent: Tuesday, November 13, 2012 4:52 PM
Subject: [GiDlist] GID question


Hi,



How to get values in *.bas file from this kind of field:

QUESTION: field_name:(…,optional_value_i,…)

VALUE: #N# number_of_values … value_number … ?



Can you send me example ?



I created this control in material module as:



QUESTION: Discrete_points(Espilon,Sigma)

VALUE: #N# 2 0.0 000



I tried get value from 1th column like below:



*MatProp(Discrete_points) - this work, but it return number of matrix elements (not all matrix)



*MatProp(Discrete_points(0)) or *MatProp(Discrete_points(Espilon)) not work.



Regards

Michał Petaś


\


\

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http://listas.cimne.upc.edu/cgi-bin/mailman/listinfo/gidlist
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3

Thank you very much.



Michał Petaś



From: gidlist-bounces at listas.cimne.upc.edu
[mailto:gidlist-bounces at listas.cimne.upc.edu] On Behalf Of Enrique Escolano
Sent: Tuesday, November 13, 2012 8:16 PM
To: gidlist at listas.cimne.upc.edu
Subject: Re: [GiDlist] GID question



You can write the values by rows for example with this code (with the index
after a comma):



*for(i=1;i=N;i=i+2)
*Matprop(Discrete_points,*i) *Matprop(Discrete_points,*operation(i+1))

*end for



We added more information and an example to the ‘customization manual’ for
next beta versions.



Enrique Escolano

----- Original Message -----

From: Michal Petas mailto:mpetas at ippt.gov.pl

To: gidlist at listas.cimne.upc.edu

Sent: Tuesday, November 13, 2012 4:52 PM

Subject: [GiDlist] GID question



Hi,



How to get values in *.bas file from this kind of field:

QUESTION: field_name:(…,optional_value_i,…)

VALUE: #N# number_of_values … value_number … ?



Can you send me example ?



I created this control in material module as:



QUESTION: Discrete_points(Espilon,Sigma)

VALUE: #N# 2 0.0 000



I tried get value from 1th column like below:



*MatProp(Discrete_points) - this work, but it return number of matrix
elements (not all matrix)



*MatProp(Discrete_points(0)) or *MatProp(Discrete_points(Espilon)) not
work.



Regards

Michał Petaś

\


\

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4

Dear Gid-users,

I am new to GID, so I apologies if this question is not an appropriate one.

I am interested to use GID as a post-processor to plot figures and videos.
So far I am using a Tecplot ASCII file that I import using
“Files-import-TECPLOT ASCII file”, after having hit the toggle between
pre and post-process.
A small example of the kind of file I use is attached.

Context:
I use to plot figures and videos with Matlab.
Because this process was very much time consuming (especially for videos
and large number of particles) I am keen to switch to GID.
Now I fear that the problem may come from the format of the file I am using
(ASCII) rather than the software.

Question:
Is there any format (VTK + binary?) that I can use to print my data that
will ensure me the best post-process performanace in GID?

Thank you for your time in answering my question.

Cheers,

Rachel.
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5

Hi Rachel,

What is the problem using TECPLOT ASCII files with GiD? Probably will be much faster than using Matlab not?
It is possible to import also VTK result files,as you pointed (Files-Import-Vtk…) (In postprocess of GiD, not in preprocess Files-Import-Vtk voxels!!)
but I am not sure if it will be faster than using TECPLOT ASCII format.

You can also directly write our ‘GiD postprocess’ format, using our ‘gidpost library’, linked in your C/C++ or FORTRAN program (http://www.gidhome.com/gid-plus/tools/gidpost)
these files will be smaller written in compressed binary format, and faster to be read (and GiD results cache could be activated to read huge result files without store the whole file in memory)

Note: set this settings, if possible, for the best graphical GiD performance:
Utilities-Preferences… - Graphical
“Fast visualization mode”
Unset “Selection lines by software”
and set drawing method to “Vertex buffer objects”
Set also “use textures for contour fills”

Enrique Escolano

----- Original Message -----
From: rachel gelet
To: gidlist at listas.cimne.upc.edu
Sent: Monday, November 26, 2012 6:58 AM
Subject: [GiDlist] format question to plot data (post-process)


Dear Gid-users,

I am new to GID, so I apologies if this question is not an appropriate one.

I am interested to use GID as a post-processor to plot figures and videos.
So far I am using a Tecplot ASCII file that I import using “Files-import-TECPLOT ASCII file”, after having hit the toggle between pre and post-process.
A small example of the kind of file I use is attached.

Context:
I use to plot figures and videos with Matlab.
Because this process was very much time consuming (especially for videos and large number of particles) I am keen to switch to GID.
Now I fear that the problem may come from the format of the file I am using (ASCII) rather than the software.

Question:
Is there any format (VTK + binary?) that I can use to print my data that will ensure me the best post-process performanace in GID?

Thank you for your time in answering my question.

Cheers,

Rachel.



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http://listas.cimne.upc.edu/cgi-bin/mailman/listinfo/gidlist
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6

Hi all,

the software I’m working with uses 6 noded triangular elements with an odd
number of integration points (i.e. either 4 or 6). GiD seems not to be able
to take this into account; is there a way to teach GiD to consider that
number of gauss points with their position?

Regards,

N.
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7

6-nodes quadratic triangles are useful in GiD, and for this element our default number of gauss point is also 6 (then we can extrapolate results from gauss points to nodes using the element shape funcions, solving a 6x6 linear equation system)

For other number of gauss points, e.g. 4 we can’t extrapolate results to nodes, and some features become unavailable, and we represent the results as spheres located on the described gauss points location.


See GiD help on GiD Customization-POSTPROCESS DATA FILES-Postprocess results format: ProjectName.post.res-Gauss Points
to know how are defined our ‘internal’ gauss points. If your solver uses a different location, you must describe it in the definition of gauss points of your results file.

Although your solver uses other gauss points, for results visualization pourposes you can write the results file using our internal definition, or also using a different number of gauss points, or better avoiding gauss points results and writting the resuls as nodal ones (averaging the nodal result to have a continuous field)


Enrique Escolano


----- Original Message -----
From: Nunzio Losacco
To: gidlist at listas.cimne.upc.edu
Sent: Monday, December 03, 2012 3:07 PM
Subject: [GiDlist] non-standard number of gauss points


Hi all,

the software I’m working with uses 6 noded triangular elements with an odd number of integration points (i.e. either 4 or 6). GiD seems not to be able to take this into account; is there a way to teach GiD to consider that number of gauss points with their position?

Regards,

N.


\


\

GiDlist mailing list
GiDlist at listas.cimne.upc.edu
http://listas.cimne.upc.edu/cgi-bin/mailman/listinfo/gidlist
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8

Hi Enrique,

thanks for your reply.
I’m not sure I understood well. If I have results at, say, 7 or 4 gauss
points, will I be able, following directions of the Customization manual,
to visualize results as continuous fields over elements (or over the whole
domain using the “smooth” results option)?

Thanks again,

N.
Il giorno 03/dic/2012 15:34, “Enrique Escolano” escolano at cimne.upc.edu ha
scritto:

**
6-nodes quadratic triangles are useful in GiD, and for this element our
default number of gauss point is also 6 (then we can extrapolate
results from gauss points to nodes using the element shape funcions,
solving a 6x6 linear equation system)
For other number of gauss points, e.g. 4 we can’t extrapolate results to
nodes, and some features become unavailable, and we represent the results
as spheres located on the described gauss points location.

See GiD help on GiD Customization-POSTPROCESS DATA FILES-Postprocess
results format: ProjectName.post.res-Gauss Points
to know how are defined our ‘internal’ gauss points. If your solver uses a
different location, you must describe it in the definition of gauss points
of your results file.
Although your solver uses other gauss points, for results visualization
pourposes you can write the results file using our internal definition, or
also using a different number of gauss points, or better avoiding gauss
points results and writting the resuls as nodal ones (averaging the nodal
result to have a continuous field)

Enrique Escolano

----- Original Message -----
From: Nunzio Losacco nunzio.losacco at gmail.com
To: gidlist at listas.cimne.upc.edu
Sent: Monday, December 03, 2012 3:07 PM
Subject: [GiDlist] non-standard number of gauss points
Hi all,
the software I’m working with uses 6 noded triangular elements with an odd
number of integration points (i.e. either 4 or 6). GiD seems not to be able
to take this into account; is there a way to teach GiD to consider that
number of gauss points with their position?
Regards,
N.
------------------------------

GiDlist mailing list
GiDlist at listas.cimne.upc.edu
_http://listas.cimne.upc.edu/cgi-bin/mailman/listinfo/gidlist_

GiDlist mailing list
GiDlist at listas.cimne.upc.edu
_http://listas.cimne.upc.edu/cgi-bin/mailman/listinfo/gidlist_

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9

No, with 7 or 4 gauss points on a guadratic (6 nodes) triangle, you will see the result as ‘coloured spheres’ on your gauss point locations,
and some options, like smooth contour fill won’t be available, because there is not implemented the extrapolation from results on your gauss points to the element nodes.
We usually use the ‘shape functions’ of the element to do this extrapolation to nodes: this require the same amount of nodes that gauss points (to have the same number of equations that unknowns).
Also the trivial case of 1 gauss point is implemented, then the constant result is extrapolated to nodes without need to solve any linear system equations.
We have not implemented a more general extrapolation mode, for a generic amount of gauss points in arbitrary locations.

But as I’ve explained, you can do you own extrapolation from your calculated gauss points, to our ‘internal’ gauss points (6 gauss points for the quatratic triangle), or better write as a ‘nodal result’ instead of a elemental gauss-point result, averaging as you want the results on nodes belonging to several triangles.

Enrique
----- Original Message -----
From: Nunzio Losacco
To: gidlist at listas.cimne.upc.edu
Sent: Thursday, December 06, 2012 1:01 PM
Subject: Re: [GiDlist] non-standard number of gauss points


Hi Enrique,

thanks for your reply.
I’m not sure I understood well. If I have results at, say, 7 or 4 gauss points, will I be able, following directions of the Customization manual, to visualize results as continuous fields over elements (or over the whole domain using the “smooth” results option)?

Thanks again,

N.

Il giorno 03/dic/2012 15:34, “Enrique Escolano” escolano at cimne.upc.edu ha scritto:

6-nodes quadratic triangles are useful in GiD, and for this element our default number of gauss point is also 6 (then we can extrapolate results from gauss points to nodes using the element shape funcions, solving a 6x6 linear equation system)

For other number of gauss points, e.g. 4 we can’t extrapolate results to nodes, and some features become unavailable, and we represent the results as spheres located on the described gauss points location.


See GiD help on GiD Customization-POSTPROCESS DATA FILES-Postprocess results format: ProjectName.post.res-Gauss Points
to know how are defined our ‘internal’ gauss points. If your solver uses a different location, you must describe it in the definition of gauss points of your results file.

Although your solver uses other gauss points, for results visualization pourposes you can write the results file using our internal definition, or also using a different number of gauss points, or better avoiding gauss points results and writting the resuls as nodal ones (averaging the nodal result to have a continuous field)


Enrique Escolano


----- Original Message -----
From: Nunzio Losacco
To: gidlist at listas.cimne.upc.edu
Sent: Monday, December 03, 2012 3:07 PM
Subject: [GiDlist] non-standard number of gauss points


Hi all,

the software I’m working with uses 6 noded triangular elements with an odd number of integration points (i.e. either 4 or 6). GiD seems not to be able to take this into account; is there a way to teach GiD to consider that number of gauss points with their position?

Regards,

N.


\


\

GiDlist mailing list
GiDlist at listas.cimne.upc.edu
http://listas.cimne.upc.edu/cgi-bin/mailman/listinfo/gidlist


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GiDlist mailing list
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10

Bonjour,

Je suis en déplacement, retour le lundi 3 décembre. Vos emails seront lus dans la mesure du possible.

En cas d’urgence, adressez votre message ici : info at mp-ingenieurs.ch

Eric Tonicello

=======================

Hi !

I’m out of office and I’ll be back on Monday December 3rd.

Emails will possibly be read during this period.

In case of urgent matter, please send your message here : info at mp-ingenieurs.ch

Eric Tonicello

11

Hello everybody,

I use GID 10 to simulate soil-structure interaction for pile foundations. I would like to know if is possible to add a contact element in order to consider the soil-pile interface behavior (e.x with shear parameters).

Thank you
Emad

12

Dear Emad,

What is the analysis code that you will use to calculate this soil-structure
case?
How are ‘contact elements’ for this code?
e.g.
a) some solvers requiere to define a master and a slave surface mesh, but
the elements of both surfaces are not ‘one-to-one’ related
b) other programs require a one-to-one relationship between the nodes of the
master and slave parts, and a link between them to know how are related.

If your program is of type a) the usual way is to define in the problemtype
a GiD condition to handle this information, and mark parts as master and
slave, and the simulation data (like shear parameters)

If your program is of type b) you need to force this special one-to-one
mesh, then you can use the ‘special pseudo-geometric entity: contact’ (menu:
Geomtry-Create-Contact)
(contact volume for 3D cases). Two master-slave ‘equal surfaces’ must be
selected, and a kind of semi-structured mesh will be created, having
one-to-one nodes.
The shear parameters could be assigned to this ‘special contact volume’ with
an additional condition aplied over these volumes.

Enrique Escolano

----- Original Message -----
From: “Emad JAHANGIR” emad.jahangir at ensg.inpl-nancy.fr
To: gidlist at listas.cimne.upc.edu
Sent: Thursday, December 13, 2012 10:23 AM
Subject: [GiDlist] contact element


Hello everybody,
I use GID 10 to simulate soil-structure interaction for pile foundations.
I would like to know if is possible to add a contact element in order to
consider the soil-pile interface behavior (e.x with shear parameters).
Thank you
Emad

GiDlist mailing list
GiDlist at listas.cimne.upc.edu
_http://listas.cimne.upc.edu/cgi-bin/mailman/listinfo/gidlist_

13

Thanks Dear Enrique,

The analysis code that I use is Code_Bright and I don’t know which kind of relationship exists between the nodes of the master and slave parts. Do you have more information about the contact analysis in this code?
Best regards


----- Mail original -----
Dear Emad,
What is the analysis code that you will use to calculate this
soil-structure
case?
How are ‘contact elements’ for this code?
e.g.
a) some solvers requiere to define a master and a slave surface mesh,
but
the elements of both surfaces are not ‘one-to-one’ related
b) other programs require a one-to-one relationship between the nodes
of the
master and slave parts, and a link between them to know how are
related.
If your program is of type a) the usual way is to define in the
problemtype
a GiD condition to handle this information, and mark parts as master
and
slave, and the simulation data (like shear parameters)
If your program is of type b) you need to force this special
one-to-one
mesh, then you can use the ‘special pseudo-geometric entity: contact’
(menu:
Geomtry-Create-Contact)
(contact volume for 3D cases). Two master-slave ‘equal surfaces’ must
be
selected, and a kind of semi-structured mesh will be created, having
one-to-one nodes.
The shear parameters could be assigned to this 'special contact
volume’ with
an additional condition aplied over these volumes.
Enrique Escolano
----- Original Message -----
From: “Emad JAHANGIR” emad.jahangir at ensg.inpl-nancy.fr
To: gidlist at listas.cimne.upc.edu
Sent: Thursday, December 13, 2012 10:23 AM
Subject: [GiDlist] contact element

Hello everybody,
I use GID 10 to simulate soil-structure interaction for pile
foundations.
I would like to know if is possible to add a contact element in
order to
consider the soil-pile interface behavior (e.x with shear
parameters).
Thank you
Emad

GiDlist mailing list
GiDlist at listas.cimne.upc.edu
_http://listas.cimne.upc.edu/cgi-bin/mailman/listinfo/gidlist_

GiDlist mailing list
GiDlist at listas.cimne.upc.edu
_http://listas.cimne.upc.edu/cgi-bin/mailman/listinfo/gidlist_

14

I am not a Code_Bright user,
ask its developers to know if this program support contacts
http://www.etcg.upc.edu/recerca/webs/code_bright/v3?set_language=ca
and how must be defined in the interface from the user point of view.

Regards

Enrique

----- Original Message -----
From: “Emad JAHANGIR” emad.jahangir at ensg.inpl-nancy.fr
To: gidlist at listas.cimne.upc.edu
Sent: Thursday, December 13, 2012 4:43 PM
Subject: Re: [GiDlist] contact element



Thanks Dear Enrique,
The analysis code that I use is Code_Bright and I don’t know which kind of
relationship exists between the nodes of the master and slave parts. Do
you have more information about the contact analysis in this code?
Best regards

----- Mail original -----
Dear Emad,
What is the analysis code that you will use to calculate this
soil-structure
case?
How are ‘contact elements’ for this code?
e.g.
a) some solvers requiere to define a master and a slave surface mesh,
but
the elements of both surfaces are not ‘one-to-one’ related
b) other programs require a one-to-one relationship between the nodes
of the
master and slave parts, and a link between them to know how are
related.
If your program is of type a) the usual way is to define in the
problemtype
a GiD condition to handle this information, and mark parts as master
and
slave, and the simulation data (like shear parameters)
If your program is of type b) you need to force this special
one-to-one
mesh, then you can use the ‘special pseudo-geometric entity: contact’
(menu:
Geomtry-Create-Contact)
(contact volume for 3D cases). Two master-slave ‘equal surfaces’ must
be
selected, and a kind of semi-structured mesh will be created, having
one-to-one nodes.
The shear parameters could be assigned to this 'special contact
volume’ with
an additional condition aplied over these volumes.
Enrique Escolano
----- Original Message -----
From: “Emad JAHANGIR” emad.jahangir at ensg.inpl-nancy.fr
To: gidlist at listas.cimne.upc.edu
Sent: Thursday, December 13, 2012 10:23 AM
Subject: [GiDlist] contact element

Hello everybody,
I use GID 10 to simulate soil-structure interaction for pile
foundations.
I would like to know if is possible to add a contact element in
order to
consider the soil-pile interface behavior (e.x with shear
parameters).
Thank you
Emad

GiDlist mailing list
GiDlist at listas.cimne.upc.edu
_http://listas.cimne.upc.edu/cgi-bin/mailman/listinfo/gidlist_

GiDlist mailing list
GiDlist at listas.cimne.upc.edu
_http://listas.cimne.upc.edu/cgi-bin/mailman/listinfo/gidlist_

GiDlist mailing list
GiDlist at listas.cimne.upc.edu
_http://listas.cimne.upc.edu/cgi-bin/mailman/listinfo/gidlist_

15

hi every body
i cant speak english very good
any of u can help me to design the soil-structure interaction in GID and analize with GID+opeensees
answere me as soon as u can
tnx

16

There is a new GiD-OpenSees interface at http://gidopensees.rclab.civil.auth.gr
All the currently available information is in this web.

17

Check for the major v2.0.0 update on 8 May 2017.