1 2005-05-26 CATIAv5 : EUCLID3 Data migration Yann BONCOMPAGNI CERN TS-CSE-CAE

CATIAv5CATIAv5CATIAv5CATIAv5

Euclid3 data migration

2 2005-05-26 CATIAv5 : EUCLID3 Data migration Yann BONCOMPAGNI CERN TS-CSE-CAE

IntroductionIntroductionIntroductionIntroduction

Euclid3 database (May 2005):

• 165000 CAD Objects including:

• 35000 official drawings (with 40000 associated 3D models)

• 6000 3D-Standards

(Presently about 1000 new models are created every month)

After the definitive shutdown of Euclid at CERN:

• LHC designs will still need to be accessed…

• and modified.

3 2005-05-26 CATIAv5 : EUCLID3 Data migration Yann BONCOMPAGNI CERN TS-CSE-CAE

Technical aspectsTechnical aspectsTechnical aspectsTechnical aspects

1. Euclid3 and CATIAv5 are completely different:- Euclid is a faceted solid modeller, CATIA is an exact, parameterized solid

modeller.- Euclid precision varies between models and can be controlled, CATIA

precision is fixed.- A lot of CATIA Solid features are sketch based (no sketch in Euclid).- Euclid data is directly stored in a database. Catia uses files.

2. Particularly at CERN:- Huge Euclid database files- Very large assemblies & Complex drawings- Heterogeneous designs:

- Various design methodologies- fast turn-over of CAD designers on site + external partners- wide scope of corporate knowledge

- Enormous variation in size and accuracy of geometrical models (from a few microns to hundred of meters)

- Euclid entities used for piping/cabling/tubing studies (no exact equivalent in CATIA)

- Many objects without Euclid history (imported from other software)- Corrupted models

4 2005-05-26 CATIAv5 : EUCLID3 Data migration Yann BONCOMPAGNI CERN TS-CSE-CAE

Conversion typesConversion typesConversion typesConversion types

Starting from a full Euclid 3D Solid Assembly…

Exact solid with CSG information

Faceted Model

5 2005-05-26 CATIAv5 : EUCLID3 Data migration Yann BONCOMPAGNI CERN TS-CSE-CAE

Conversion tools / SoftwaresConversion tools / SoftwaresConversion tools / SoftwaresConversion tools / Softwares

• MDTVISION Connectivity Modules:

A Euclid3 to CATIAv5 connector that allows surfaces (Brep), solids (with or without CSG information) and drawing conversion.

• DeltaConcept Workview:

Provides Euclid3 to VRML or DXF conversion possibility.

• CAD Standard exchange formats:

STEP, IGES, DXF/DWG

• Other tools:

3D Evolution, Trans3D, TTF, OpenCascade…

6 2005-05-26 CATIAv5 : EUCLID3 Data migration Yann BONCOMPAGNI CERN TS-CSE-CAE

•About 40% of converted models contain errors

•Not all kind of error can be detected by programs

•Models must be manually checked after conversion (human resources are needed).

•In most cases the best solution is to correct in Euclid and convert again

Euclid3 to CATIAv5 Connectivity Modules conversion results

60%15%

10%8%

7%

Success

Failed

Deactivated features

Geometry does not correspond

Assembly structure problem

3D Conversion results3D Conversion results3D Conversion results3D Conversion results

• All components have been successfully converted: 60%

• Some Parts are missing due to assembly structure organisation conversion errors: 8%

• No output file generated: 7% (conversion process aborted)

Faceted models (for integration studies: not editable)

• Using DeltaConcept WorkView, about 99% of models are converted successfully

Exact models (for mechanical studies: editable)

• Results obtained mainly with the Euclid3 to CatiaV5 Connectivity Modules from MDTVision.

7 2005-05-26 CATIAv5 : EUCLID3 Data migration Yann BONCOMPAGNI CERN TS-CSE-CAE

2D Conversion results2D Conversion results2D Conversion results2D Conversion results

Drawings converted by the connector

• A drawing converted by the connector is not always exactly the same as the original from Euclid.

• Severe problems with the “cache” function.• Problems with the spline representation• Dimensions can change slightly!

• Euclid3 to Catiav5 Connectivity Modules convert only the 2D geometry.

• Original links with the 3D models are lost and the corresponding models are not converted

• Internal development is needed to migrate separately the linked 3D models, and to trace the original links inside SmarTeam.

All archived CDD drawings will be kept in HPGL format: this is the only way to keep a safe copy of the drawing.

8 2005-05-26 CATIAv5 : EUCLID3 Data migration Yann BONCOMPAGNI CERN TS-CSE-CAE

Conversion PolicyConversion PolicyConversion PolicyConversion Policy

The CERN EUCLID3 databases cannot be transferred entirely,Only the following will be migrated:

• 3D-Standards ~8000• Official 3D-drawings (CDD non-obsolete drawings) and corresponding 3D

models > 70000

• Should be < 40000 after filtering by Design office (declare obsolete what is obsolete LEP/DFBS…)

• Check carefully and correct ONLY essential data (to be identified, checked and corrected by the design offices)

• 3D models used by ICL (LHC integration) (*)• Other models or drawings manually selected by the Design Office

(*) No list has been provided to the CSE-CAE section yet

9 2005-05-26 CATIAv5 : EUCLID3 Data migration Yann BONCOMPAGNI CERN TS-CSE-CAE

DevelopmentDevelopment Progress Report Progress ReportDevelopmentDevelopment Progress Report Progress ReportInvestigate conversion facilities:

Trans3D & 3d Evolution, Connector, WorkView

Step, OpenCascade

TTF

++++

+++

-

3D Standards automatic conversion application ++++

Euclid3 hardcopy application (pictures on A4) +++++

CATIA v5 hardcopy application -

Euclid Migration preprocessor: cleaning of euclid data, decoding & removing CERN specific data (cartouche, docmrp…) +

Catia V5 Migration postprocessor: cleaning connector result, reencoding CERN specific data (cartouche, docmrp …) +

Conversion by Euclid assembly structure +

Euclid < -- > Catia Conversion through WebConsult +++

ICL models automatic conversion application -

Complete application to help CAD users to select unofficial Euclid3 models: selection and automatic propagation -

Sorting and selection based on docmrp & scandoc -

Migration Follow up Tool box:

Control/Monitoring/Reporting/Mailing…

TclTk applications based on Oracle databases.

+

CDD Drawings automatic conversion application 2D only ++

Conversion of 3D models attached to CDD drawings +

CDD official drawings sorting and filtering interactive TclTk application -

Euclid application to lock transferred objects -

SmarTeam import entire design structure application:

Approbation mechanisms, recovering of docmrp data, mapping Euclid links…+

SmarTeam associative links with CDD/EDMS application development – mapping CDD links +

10 2005-05-26 CATIAv5 : EUCLID3 Data migration Yann BONCOMPAGNI CERN TS-CSE-CAE

Suggested timetableSuggested timetableSuggested timetableSuggested timetable

• 2005-2006•Migration tools preparation period.•Checking conversion quality (Design Offices)

• 2007:•Migration production start. The relevant Euclid 2D-drawings and 3D-models are selected and migrated. General design use of Euclid is stopped at the end of 2007.

• 2008-2010:•Tools will be kept active for a limited period after the main migration. •The CERN design offices will be responsible for converting manually (WebConsult) any additional data.