[GiDlist] Re: Convert to IGES format

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Henry

[GiDlist] Re: Convert to IGES format

Post by Henry »

Hi, GiD teams

I have a surface triangle mesh generated by myself. I want to be able to use GiD to convert it to IGES format. The import of the model into GiD is fine, but when the model is exported as an iges file, the file is almost empty in that there is no geometry information or others. The attachment is a testing example. Any suggestion on this?

Thank you

Henry




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escolano
Posts: 1961
Joined: Sun Sep 05, 1982 10:51 pm

[GiDlist] Re: Convert to IGES format

Post by escolano »

The mesh triangles are not written in the IGES file, mainly this is a geometric format.
Can convert each triangle to a geometric surface:
1- Export your triangles with the auxiliary template DXFSAP2000
menu: Files-Export-Using template (only mesh)-DXFSAP2000
2- Import again in GiD this dxf file. You will have a surface by triangle
menu: Files-Import-DXF
3- Export finally this surfaces as IGES

Regards
Enrique
----- Original Message -----
From: Henry
To: gidlist at gatxan.cimne.upc.edu
Sent: Thursday, June 23, 2005 6:20 PM
Subject: [GiDlist] Re: Convert to IGES format


Hi, GiD teams

I have a surface triangle mesh generated by myself. I want to be able to use GiD to convert it to IGES format. The import of the model into GiD is fine, but when the model is exported as an iges file, the file is almost empty in that there is no geometry information or others. The attachment is a testing example. Any suggestion on this?

Thank you

Henry
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Henry

[GiDlist] Re: Convert to IGES format

Post by Henry »

Hi, GiD teams

Following the steps you suggested as below, I am able to convert a surface triangle mesh (generated by another lcoal programme) to .iges file format. The problem is that the corresponding .iges file contains only point coordinates and line definitions without surface element definitions. So this file can't be used for 3-D mesh generation. Any suggestion on this problem?

The attachment is the test model and its corresponding .iges file.

thanks

Henry


Enrique Escolano escolano at cimne.upc.edu wrote: The mesh triangles are not written in the IGES file, mainly this is a geometric format.
Can convert each triangle to a geometric surface:
1- Export your triangles with the auxiliary template DXFSAP2000
menu: Files-Export-Using template (only mesh)-DXFSAP2000
2- Import again in GiD this dxf file. You will have a surface by triangle
menu: Files-Import-DXF
3- Export finally this surfaces as IGES

Regards
Enrique
----- Original Message -----
From: Henry
To: gidlist at gatxan.cimne.upc.edu
Sent: Thursday, June 23, 2005 6:20 PM
Subject: [GiDlist] Re: Convert to IGES format


Hi, GiD teams

I have a surface triangle mesh generated by myself. I want to be able to use GiD to convert it to IGES format. The import of the model into GiD is fine, but when the model is exported as an iges file, the file is almost empty in that there is no geometry information or others. The attachment is a testing example. Any suggestion on this?

Thank you

Henry




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http://mail.yahoo.com
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User avatar
escolano
Posts: 1961
Joined: Sun Sep 05, 1982 10:51 pm

[GiDlist] Re: Convert to IGES format

Post by escolano »

The surfaces of your test.gid model were not written in the IGES file because they are 'surfmesh' entities.
A 'surfmesh' is a GiD pseudo-surface (with a mesh to define the internal shape). This entity cannot be translated to any IGES entity, then only the curves and points are written.

Don't import the triangle mesh with Import-Surface mesh (it create 'surfmesh' entities)
You can use my related trick:
0- Read your GiD ASCII mesh with
menu: Files-Import-GiD mesh
1- Export your triangles with the auxiliary template DXFSAP2000
menu: Files-Export-Using template (only mesh)-DXFSAP2000
2- Import again in GiD this dxf file. You will have a surface by triangle
menu: Files-Import-DXF
3- Export finally this surfaces as IGES
menu: Files-Export-IGES

Enrique
----- Original Message -----
From: Henry
To: gidlist at gatxan.cimne.upc.edu
Sent: Wednesday, July 06, 2005 7:35 PM
Subject: [GiDlist] Re: Convert to IGES format


Hi, GiD teams

Following the steps you suggested as below, I am able to convert a surface triangle mesh (generated by another lcoal programme) to .iges file format. The problem is that the corresponding .iges file contains only point coordinates and line definitions without surface element definitions. So this file can't be used for 3-D mesh generation. Any suggestion on this problem?

The attachment is the test model and its corresponding .iges file.

thanks

Henry


Enrique Escolano escolano at cimne.upc.edu wrote:
The mesh triangles are not written in the IGES file, mainly this is a geometric format.
Can convert each triangle to a geometric surface:
1- Export your triangles with the auxiliary template DXFSAP2000
menu: Files-Export-Using template (only mesh)-DXFSAP2000
2- Import again in GiD this dxf file. You will have a surface by triangle
menu: Files-Import-DXF
3- Export finally this surfaces as IGES

Regards
Enrique
----- Original Message -----
From: Henry
To: gidlist at gatxan.cimne.upc.edu
Sent: Thursday, June 23, 2005 6:20 PM
Subject: [GiDlist] Re: Convert to IGES format


Hi, GiD teams

I have a surface triangle mesh generated by myself. I want to be able to use GiD to convert it to IGES format. The import of the model into GiD is fine, but when the model is exported as an iges file, the file is almost empty in that there is no geometry information or others. The attachment is a testing example. Any suggestion on this?

Thank you

Henry
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------------------------------------------------------------------------------


Translator GID - IGES S0000001
1H,,1H;,3HGID,42Hp:/probeShare/Biomed/AUDILAB/qili/test.igs,,,32,,,,,,1,G0000001
,,1,0,,0,0,,5HCIMNE,9,,; G0000002
110 1 1 D0000001
110 1 STLINE 1D0000002
110 2 1 D0000003
110 1 STLINE 2D0000004
110 3 1 D0000005
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110 1 STLINE 4D0000008
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110 1 STLINE 10D0000020
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110 1 STLINE 29D0000058
110 30 1 D0000059
110 1 STLINE 30D0000060
110,-0.707107,0.707107,0,0.707107,0.707107,0; 1P0000001
110,0.707107,0.707107,0,-0.707107,-0.707107,0; 3P0000002
110,-0.707107,-0.707107,0,-0.707107,0.707107,0; 5P0000003
110,0.707107,0.707107,0,0.707107,-0.707107,0; 7P0000004
110,0.707107,-0.707107,0,-0.707107,-0.707107,0; 9P0000005
110,0.707107,0.707107,0,0,0.707107,0.5; 11P0000006
110,0,0.707107,0.5,0.707107,0.707107,1; 13P0000007
110,0.707107,0.707107,1,0.707107,0.707107,0; 15P0000008
110,0,0.707107,0.5,-0.707107,0.707107,0; 17P0000009
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110,0,-0.707107,0.5,0.707107,-0.707107,0; 43P0000022
110,0.707107,-0.707107,0,0.707107,-0.707107,1; 45P0000023
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110,0.707107,0,0.5,0.707107,-0.707107,1; 51P0000026
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S0000001G0000002D0000060P0000030 T0000001
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