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CAD Data TranslationUGS/CATIA V5 /UGS

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UGS NX 5.0 CATIA V5

UGS/CATIA V5

Objective: Obtain valid and editable 3D model

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Importance of Repair & Healing

Visualization

Automatic

Repair

Verification

Import

Translation

Sewing

Export

Manual

Repair

3DTransVidia

External CAD dataIGES

STEP

VDA-FS

CATIA V4

CATIA V5

Parasol id

ACIS

AutoFormSTL

VRML

IGES

STEP

VDA-FS

CATIA V4

CATIA V5

CADDS

UGS

Pro/EParasol id

ACIS

AutoForm

STL

VRML

Preserve original model tolerance No model deformations Data format independent

3DTransVidia Repair & Healing schema

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Formats, kernels, model tolerance

Kernel different concepts (surface/solid) exact modeling - tolerant modeling (topological solids) kernel tolerance 10E-8 mm (accuracy for math operations)

Formats Neutral 2 x translation over not strict defined format (IGES, STEP) Native compliance with data formats is not enoughAPI defined transaction considering all constraints

Model tolerance relative (CATIA V4 modeling space dependent 0.1 mm) absolute (SW modeling space independent 0.02 mm)

Donating

CADSystem

Kernel

A API

NATIVE

STEP

IGES Receiving

CADSystem

Kernel

B

IGES

STEP

NATIVE

API

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UGS NX 5.0Direct translation CATIA V5

UGS/CATIA V5

Why Repair & Healing is an integral part of data translation?

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CATIA Mesh generation failed

UGS/CATIA V5

Why Repair & Healing is an integral part of data translation?

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UGS NX 5.0

UGS/CATIA V5

Why Repair & Healing is an integral part of data translation?

CATIA V5

Geometry: Surfaces: min G1 Curves: min G1 Self Intersection: not allowed

Topology: Loops: min G1 Close Cylinders splited into twohalf

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CATIA V5Geometry: Surfaces: min G1 Curves: min G1 Self Intersection: not allowed

Surface Simplification requiredTopology: Loops: min G1

UGS/CATIA V5

Why Repair & Healing is an integral part of data translation?

UGS NX 5.0

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UGS/3DTransVidia

3DTransVidia Repair Options

Geometry: Surfaces: min G1 Curves: min G1 Self Intersection: not allowed Surface Simplification requiredTopology: Loops: min G1

Close Cylinders splited into twohalfAnd more

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Automatic Repair

GeneralInvalid object's formal parametersInvalid object's dependenciesInvalid camera's view parametersTopologyEdgeInvalid vertexInvalid orientationNot G1Loop

Not defined in Model SpaceNot defined in Parametric SpaceNot synchronized representation (in Model Space and Parametric Space)Not G0 in Model SpaceNot G0 in Parametric SpaceNot closed in Model SpaceNot closed in Parametric SpaceInvalid orientationIntersection (or self-intersection)Laying out of surface domain (partially)Inconsistent orientation with curves (in Parametric Space)FaceDegeneratedRibbonInvalid orientation (normal direction)Not G1 (underlying surface)Intersection (or self-intersection)Inner loop is missedOuter loop is wrongly indexedOuter loop is missedNot optimal underlying surface definition

Self-touching loop

GeometryCurveDegeneratedSharedIrregular parameterization2D curve is out of surface domainNURBS curveNot G1(G2)Invalid knot vectorCollapsed control points

Not simplified (polyline)Not simplified (segment)PolylineDuplicated pointsLinear chainsOne segment

Approximation by NURBS curveComposite curveNot G0Invalid sub-curve indexInvalid sub-curve orientation

Duplicated sub-curveOne sub-curveNested composite curveSpline curveInvalid knot vector

SurfaceDegeneratedSharedWavy parameterizationInsufficient domainType conversionNURBS surfaceNot G1(G2)Invalid knot vectorCollapsed control points

Surface of revolutionInvalid parameterizationInvalid generatrix curveSurface of revolution self intersectionNot-optimal seam

More than 70 error types

Restoring topological information

using 3DTransVidia Sewing function

Geometry Topology

Consumable B-Rep Translation

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UGS/3DTransVidia

UGS NX 5.03DTransVidia

3DTransVidia Repair & Healing

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3DTransVidia/CATIA V5

Export to CATIA V5 from 3DTransVidia

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3DTransVidia/CATIA V5

CATIA Mesh successfully generated

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Summary

Bi- directional translation from/to UGS-CATIA V5 with high level oftranslation quality

UGS/3DTransVidia/CATIAV5

UGS NX 5.0 3DTransVidia CATIA V5