GiD forum

Hello,

I would like to know how a 3D surface can be represented using GID
For exemple the surface of a river.

Thank you

Abdou

You can create NURBS surfaces with several methods:
menu: Geometry-Create-Nurbs surface

- By contour, create the surface interpolating the selected boundary lines
- By a family "near-parallel" lines
- By Points/By line points, selecting a cloud of points (the surface will be
untrimmed, and not interpolate this points, only approximate them)

Other useful method is create from the copy window, by extruding some source
lines (by translation, rotation, sweep,...)

Other non-useful methods is:

Thank you so much Enrique but sorry,

my question was not explicit enough. I am simulating some kind of inundation
or dambreak. The preprocessing (mesh) is ok with GID , but at the
postprocessing step, I can only visualise the z-movement of the surface of
water using colors, View results- Contour Fill for exemple. Whereas I
want
a 3D animation.

If these explanation is not enough, please look at

http://www-rocq.inria.fr/bang/SWE/sur.damf.gif

to see what I really need to get.

Best regards

Abdou Sene

You can create NURBS surfaces with several methods:
menu: Geometry-Create-Nurbs surface

- By contour, create the surface interpolating the selected boundary lines
- By a family "near-parallel" lines
- By Points/By line points, selecting a cloud of points (the surface will
be
untrimmed, and not interpolate this points, only approximate them)

Other useful method is create from the copy window, by extruding some
source
lines (by translation, rotation, sweep,...)

Other non-useful methods is:
From a cloud of points, can create a triangulation in Z=0 projection (this
option is only is availble from the right buttons)
escape escape escape meshing connectpoints createsurfaces
or
escape escape escape meshing connectpoints createelements
If you create triangle elements, you can after split them to approximate a
smooted shape (require the last 7.5.8b beta version)
menu: Meshing-Edit mesh-Split Elems-Triangle-Triangle
You can use directly this mesh, or can create a "surfmesh", a
pseudo-surface
with the mesh shape that can be remeshed.
To create a surfmesh from a triangle selection use:
escape escape escape geometry create surfmesh selectmesh

Off course you can create the surfaces with an external CAD and import
them
(using IGES or other interchange format)

Regards
Enrique Escolano

----- Original Message -----
From: asene at sunumail.sn
To: gidlist at gatxan.cimne.upc.es
Sent: Thursday, May 19, 2005 4:19 PM
Subject: [GiDlist] 3D surface representation






Hello,

I would like to know how a 3D surface can be represented using GID
For exemple the surface of a river.

Thank you

Abdou
_______________________________________________
GiDlist mailing list
GiDlist at gid.cimne.upc.es
http://gid.cimne.upc.es/mailman/listinfo/gidlist


_______________________________________________
GiDlist mailing list
GiDlist at gid.cimne.upc.es
http://gid.cimne.upc.es/mailman/listinfo/gidlist

Your solver must write a vector results with the nodes displacements in each
time step, and you can use this result to show the deformed mesh.

Open the View results window (menu: Window-View results)
And in the "main mesh", select "Deformed", and select the vector result to
use for the deformation. This vector can be a relative increment to add to
the original mesh, or the final position vector (must check "position
vector")
Also can set the "factor scale"

Can see an animation of all steps from the Animate window (menu:
Windows-Animate), this film can be saved as mpg, avi or animated gif

Regards

Enrique

----- Original Message -----
From: asene at sunumail.sn
To: gidlist at gatxan.cimne.upc.edu
Sent: Friday, May 20, 2005 1:04 PM
Subject: Re: [GiDlist] 3D surface representation


Thank you so much Enrique but sorry,

my question was not explicit enough. I am simulating some kind of
inundation
or dambreak. The preprocessing (mesh) is ok with GID , but at the
postprocessing step, I can only visualise the z-movement of the surface of
water using colors, View results- Contour Fill for exemple. Whereas I
want
a 3D animation.

If these explanation is not enough, please look at

http://www-rocq.inria.fr/bang/SWE/sur.damf.gif

to see what I really need to get.

Best regards

Abdou Sene

You can create NURBS surfaces with several methods:
menu: Geometry-Create-Nurbs surface

- By contour, create the surface interpolating the selected boundary
lines
- By a family "near-parallel" lines
- By Points/By line points, selecting a cloud of points (the surface
will
be
untrimmed, and not interpolate this points, only approximate them)

Other useful method is create from the copy window, by extruding some
source
lines (by translation, rotation, sweep,...)

Other non-useful methods is:
From a cloud of points, can create a triangulation in Z=0 projection
(this
option is only is availble from the right buttons)
escape escape escape meshing connectpoints createsurfaces
or
escape escape escape meshing connectpoints createelements
If you create triangle elements, you can after split them to approximate
a
smooted shape (require the last 7.5.8b beta version)
menu: Meshing-Edit mesh-Split Elems-Triangle-Triangle
You can use directly this mesh, or can create a "surfmesh", a
pseudo-surface
with the mesh shape that can be remeshed.
To create a surfmesh from a triangle selection use:
escape escape escape geometry create surfmesh selectmesh

Off course you can create the surfaces with an external CAD and import
them
(using IGES or other interchange format)

Regards
Enrique Escolano

----- Original Message -----
From: asene at sunumail.sn
To: gidlist at gatxan.cimne.upc.es
Sent: Thursday, May 19, 2005 4:19 PM
Subject: [GiDlist] 3D surface representation






Hello,

I would like to know how a 3D surface can be represented using GID
For exemple the surface of a river.

Thank you

Abdou
_______________________________________________
GiDlist mailing list
GiDlist at gid.cimne.upc.es
http://gid.cimne.upc.es/mailman/listinfo/gidlist


_______________________________________________
GiDlist mailing list
GiDlist at gid.cimne.upc.es
http://gid.cimne.upc.es/mailman/listinfo/gidlist



_______________________________________________
GiDlist mailing list
GiDlist at gid.cimne.upc.es
http://gid.cimne.upc.es/mailman/listinfo/gidlist

Thank you, it works well

Abdou



Your solver must write a vector results with the nodes displacements in
each
time step, and you can use this result to show the deformed mesh.

Open the View results window (menu: Window-View results)
And in the "main mesh", select "Deformed", and select the vector result to
use for the deformation. This vector can be a relative increment to add to
the original mesh, or the final position vector (must check "position
vector")
Also can set the "factor scale"

Can see an animation of all steps from the Animate window (menu:
Windows-Animate), this film can be saved as mpg, avi or animated gif

Regards

Enrique

----- Original Message -----
From: asene at sunumail.sn
To: gidlist at gatxan.cimne.upc.edu
Sent: Friday, May 20, 2005 1:04 PM
Subject: Re: [GiDlist] 3D surface representation


Thank you so much Enrique but sorry,

my question was not explicit enough. I am simulating some kind of
inundation
or dambreak. The preprocessing (mesh) is ok with GID , but at the
postprocessing step, I can only visualise the z-movement of the surface
of
water using colors, View results- Contour Fill for exemple. Whereas I
want
a 3D animation.

If these explanation is not enough, please look at

http://www-rocq.inria.fr/bang/SWE/sur.damf.gif

to see what I really need to get.

Best regards

Abdou Sene

You can create NURBS surfaces with several methods:
menu: Geometry-Create-Nurbs surface

- By contour, create the surface interpolating the selected boundary
lines
- By a family "near-parallel" lines
- By Points/By line points, selecting a cloud of points (the surface
will
be
untrimmed, and not interpolate this points, only approximate them)

Other useful method is create from the copy window, by extruding some
source
lines (by translation, rotation, sweep,...)

Other non-useful methods is:
From a cloud of points, can create a triangulation in Z=0 projection
(this
option is only is availble from the right buttons)
escape escape escape meshing connectpoints createsurfaces
or
escape escape escape meshing connectpoints createelements
If you create triangle elements, you can after split them to
approximate
a
smooted shape (require the last 7.5.8b beta version)
menu: Meshing-Edit mesh-Split Elems-Triangle-Triangle
You can use directly this mesh, or can create a "surfmesh", a
pseudo-surface
with the mesh shape that can be remeshed.
To create a surfmesh from a triangle selection use:
escape escape escape geometry create surfmesh selectmesh

Off course you can create the surfaces with an external CAD and import
them
(using IGES or other interchange format)

Regards
Enrique Escolano

----- Original Message -----
From: asene at sunumail.sn
To: gidlist at gatxan.cimne.upc.es
Sent: Thursday, May 19, 2005 4:19 PM
Subject: [GiDlist] 3D surface representation






Hello,

I would like to know how a 3D surface can be represented using GID
For exemple the surface of a river.

Thank you

Abdou
_______________________________________________
GiDlist mailing list
GiDlist at gid.cimne.upc.es
http://gid.cimne.upc.es/mailman/listinfo/gidlist


_______________________________________________
GiDlist mailing list
GiDlist at gid.cimne.upc.es
http://gid.cimne.upc.es/mailman/listinfo/gidlist



_______________________________________________
GiDlist mailing list
GiDlist at gid.cimne.upc.es
http://gid.cimne.upc.es/mailman/listinfo/gidlist


_______________________________________________
GiDlist mailing list
GiDlist at gid.cimne.upc.es
http://gid.cimne.upc.es/mailman/listinfo/gidlist