[GiDlist] Re: Surface node on volume mesh

GiDList Archive 2013 - 2005
1

Maybe you can create another aditional surface mesh: the boundary of the volume elements.
This command is not included in any menu. Must write this in the lower command line:
escape escape escape meshing createboundary

Then it’s created in the current layer to use a triangle mesh (it’s not created any new node)
If I understod well your question, the nodes used by this boundary triangles, are your desired nodes.
(you can delete the previous tetrahedras, and lonely nodes, and export the remaining mesh)

Regards
Enrique

----- Original Message -----
From: Henry Liu
To: gidlist at gatxan.cimne.upc.es
Sent: Friday, February 18, 2005 3:35 AM
Subject: [GiDlist] Re: Surface node on volume mesh


Hello, GiD teams

I would like to know whether there is a way to output those surface node coordinates of volume mesh of a model in a single output file or comnbined into the exported GiD (volume) mesh file.

Thanks!

Henry



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2

Hello, GID Team,

I have some horizontal sections of a solid structure: i would like to know
if it’s possible, using GID, to “interpolate”, using these “slices”, the
external surface of the structures itself.

Thank you very much, sorry for my poor english!


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3

You can try to use
Geometry-Create-NURBS Surface-By parallel lines.

But only works for a collection of near-parallel open lines.
Maybe you can manually divide or join lines to obtain the desired surfaces.

Regards
Enrique Escolano

----- Original Message -----
From: durthu at tiscali.it
To: gidlist at gatxan.cimne.upc.es
Sent: Tuesday, February 22, 2005 12:54 PM
Subject: [GiDlist] Horizontal sections


Hello, GID Team,
I have some horizontal sections of a solid structure: i would like to
know
if it’s possible, using GID, to “interpolate”, using these “slices”, the
external surface of the structures itself.
Thank you very much, sorry for my poor english!

\

Tiscali Adsl 3 Mega Flat, 3 MESI GRATIS!
Con Tiscali Adsl 3 Mega Flat navighi in Rete alla supervelocita’
a soli 29.95 euro al mese senza limiti di tempo. Attivati entro
il 28 Febbraio 2005, 3 MESI sono GRATIS
_Scopri come http://abbonati.tiscali.it/adsl/sa/2flat_tc/_

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4

Good morning,

I wish assign properties to a mesh.
In particular, there is no problem to assign properties (Id number in
the GID msh file) to surface elements and nodes elements but I do not
have found how to assign properties to the linear elements (a dimension,
a linear resistivity…)
of a mesh.

Is there any solution to this problem ? Is there an problem type example
I could study ?

Thank you,

G.W.R. Geis

5

In general, it is a bad idea to assign conditions directly over mesh
entities. It’s better to assign over the geometric entities, and
then generate a mesh.!!

There is not any particularity to assign conditions to line elements.
Are you sure that you have line elements (2 noded elements, or 3 noded for
quadratic case) ?
Maybe you trying to assign to the edges of a surface mesh.!!

See help about Customization-Conditions file:
An important characteristic of the conditions is that they must define over
what kind of entity are going to be applied, i.e., over points, lines,
surfaces, volumes or layers and over what kind of entity will be
transferred, i.e., over nodes, over face elements or over body elements.

CONDMESHTYPE:
a.. over nodes means that the condition will be transferred to the nodes
contained in the geometrical entity where condition is assigned.
b.. over face elements If this condition is applied to a line that is the
boundary of a surface or to a surface that is the boundary of a volume, this
condition is transferred to the higher elements, marking the affected face.
c.. over body elements If this condition is applied to lines, it will be
transferred to line elements. If it is assigned to surfaces, it will be
transferred to surface elements. If in volumes, to volume elements.
If you have line elements, you probably must define the condition as
CONDMESHTYPE:: over body elements
If you have triangles or quadrilaterals, you probably must define the
condition as CONDMESHTYPE:: over face elements, to select only some faces
of this elements

Update your GiD version to last 7.5.3b beta version (they have some new
feature to directly assign conditions over face elements).

You can download some interesting problemtypes (Nastran, RamSeries,
Tdyn,…) from the GiD menu:
Data-Problemtypes-Internet retrieve…

Regards
Enrique Escolano

----- Original Message -----
From: “IEEA” ieea at club-internet.fr
To: “GIDliste” gidlist at gatxan.cimne.upc.es
Sent: Wednesday, February 23, 2005 10:21 AM
Subject: [GiDlist] Assign properties to linear elements of a mesh


Good morning,
I wish assign properties to a mesh.
In particular, there is no problem to assign properties (Id number in
the GID msh file) to surface elements and nodes elements but I do not
have found how to assign properties to the linear elements (a dimension,
a linear resistivity…)
of a mesh.
Is there any solution to this problem ? Is there an problem type example
I could study ?
Thank you,
G.W.R. Geis

GiDlist mailing list
GiDlist at gid.cimne.upc.es
_http://gid.cimne.upc.es/mailman/listinfo/gidlist_

6

Good morning,

I wish connect 2 meshes by linking 2 nodes (one of the 1st mesh and the
other one belonging to the 2nd mesh).
Is it possible to “create” linear elements into the “Mesh” GID window ?

Thank you,

G.W.R. Geis

7

Hello,

Is there a Tcl command which returns the number (used in the GID mesh
file) associated to a material name ? or the material name associated to
a number used in the GID mesh file ?

Thank you in advance.

G.W.R. Geis

8

Read GiD help about Tcl-Tk extension - Info function
The Tcl command:
GiD_Info materials
returns a list of the current material names, then to get the name of the 1st material, must use for example:

set i 1
lindex [GiD_Info materials] [expr $i-1]

or to get the number of the material “matname”

set matname “steel”
expr [lsearch [GiD_Info materials] matname]+1

Note: when writting the output file using a .bas template, the printed material numbers are renumbered, avoiding unused materials.

Regards
Enrique Escolano

----- Original Message -----
From: “IEEA” ieea at club-internet.fr
To: “GIDliste” gidlist at gatxan.cimne.upc.es
Sent: Thursday, February 24, 2005 2:53 PM
Subject: [GiDlist] Material number & Material name


Hello,
Is there a Tcl command which returns the number (used in the GID mesh
file) associated to a material name ? or the material name associated to
a number used in the GID mesh file ?
Thank you in advance.
G.W.R. Geis

GiDlist mailing list
GiDlist at gid.cimne.upc.es
_http://gid.cimne.upc.es/mailman/listinfo/gidlist_
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