Software GPure

is a software used to simplify 3D Models generated with Catia.

This software is developped by Delta CAD a company based in Paris.

This company proposes different applications designed to facilitate the work with 3D softwares like Catia.(more informations here: http://www.deltacad.fr )

14/04/2011 1GALLEAZZI F.

GPure is used by different companies :

We are in relation with the GANIL and IN2P3 who are using GPure too.

The GANIL is using GPure since last summer . It is very interesting to discusswith them because they have the same type of 3D models as we have here at CERN.

14/04/2011 2GALLEAZZI F.

1 st Example of simplification with GPure: SLAC Collimator

14/04/2011 3GALLEAZZI F.

Catia Model (CADProduct)Size of Assembly : 17,7 MB

CGR Model via CatiaSize of Model : 3,7 MB

CGR Model via GPureSize of Model : 1,2 MB

2nd Example of simplification with GPure: RFQ Cavity

14/04/2011 4GALLEAZZI F.

Catia Model (CADProduct)Size of Assembly : 369 MB

CGR Model via CatiaSize of Model : 16,9 MB

CGR Model via GPureSize of Model : 4,8 MB

Currently process of simplification : RFQ Cavity

14/04/2011 5GALLEAZZI F.

Catia Detailed Model (CADProduct)Size of Assembly : 369 MB

Catia Simplified Model (CADProduct)Size of Model ≈ 5 MBWork Time ≈ 8h

GPure has been tested with other types of models :

Models of Experiments (Atlas) Models of services

The size of CGR models generated with GPure are always lower than the CGR models generated from Catia. The difference can be important for Integration of large assemblies (like Atlas Experiment or LINAC 4…).

With Gpure, we have the possibility to define different scripts adapted to the various models produced at CERN.

Once the script is written the model convertion time is short (3mn for the SLAC Collimator and 10 mn for the RFQ Cavity).

14/04/2011 6GALLEAZZI F.

The results of these tests seemed OK , even if the scripts for these types of

models do not exist yet…

Models generated by GPure are CGR models, and they havesome disadvantages :

Positioning:

A skeleton mustbe added to theCGR model.

The same skeleton will be used for thepositioning of Detailed model andSimplified modelin a large assembly.

14/04/2011 7GALLEAZZI F.

Skeleton Elements

Models generated by GPure are CGR models, and they havesome disadvantages :

Measurements :

The faces and axises are lost.

Radius or diameters are lost in a case of cylindrical models.

Nevertheless it is always possible to measure betweem 2 points with the option : Picking Point.

14/04/2011 8GALLEAZZI F.

Models generated by GPure are CGR models, and they havesome disadvantages :

Drawings : (1)

To see the CGR models in a drawing, the field CGR must be selected in the Options.

To start a new drawing with only CGRmodels , the field CGR must be selected inthe Properties.

14/04/2011 9GALLEAZZI F.

Models generated by GPure are CGR models, and they havesome disadvantages :

Drawings : (2)

The main problem : Dimensions and

Axises are not linked to the

3D…

14/04/2011 10GALLEAZZI F.

Original drawing

Drawing after modification

So when there is a modification the Dimensions and

Axises are not updated.

Models generated by GPure are CGR models, and they havesome disadvantages :

But the Automatic Updating problem of Drawings can be solved : 2 solutions

1/ The skeleton An Assembly skeleton could be

added to the 3D Assembly model.

This skeleton is used to put the different models in position.

2 views imported in 2D :- 1 with the CGR model- 1 with the skeletonThe 2 views must be superposed.The dimensions must be linked to the skeleton.14/04/2011 11GALLEAZZI F.

Models generated by GPure are CGR models, and they havesome disadvantages :

But the Automatic Updating problem of Drawings can be solved : 2 solutions

2/ Dimensions in 3DThe dimensions could be

realizedin 3D using the skeletons of

differentequipments.

2 views imported in 2D :- 1 with the CGR model- 1 with the 3D dimensionsThe 2 views must be superposed.

14/04/2011 12GALLEAZZI F.

Models generated by GPure are CGR models, but it is possible to :

Make Sections (mixed model : CAD Product + CGR)

14/04/2011 13GALLEAZZI F.

DRAWING

3D MODEL

Models generated by GPure are CGR models, but it is possible to :

Make Clash Detection (mixed model : CAD Product + CGR)

14/04/2011 14GALLEAZZI F.

Conclusions :

The simplified models made with GPure will help the Integration teams in constructing Large Assemblies of Machines or Experiments.Layout drawings can be produced from these Large Assemblies.

With these models it is possible to check dimensions and to detect conflicts between differents equipments.

Once the assemblies are constructed, detail models can replace the simplified ones in areas where equipments are close to each other.With this manipulation, we can check with a better precision.

14/04/2011 15GALLEAZZI F.

Next steps:

The order of 1 floating licence of GPure is placed.

5 people (from CAD Support and Integration team) will be trained.

Some CERN specific scripts will be ordered from DeltaCAD.

The methodology for using GPure in the CERN environment is being defined at the moment.

The first simplifications made with GPure in production at CERN, will start soon.

14/04/2011 16GALLEAZZI F.

Thank you for your attention

14/04/2011 17GALLEAZZI F.