DMU Navigator (CATIA)
Digital Mock-Up — lightweight visualization, sectioning, clash detection, and measurement of very large assemblies.
🔗 Related Concepts
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Definition
DMU Navigator (and DMU Space Analysis, DMU Kinematics, DMU Fitting) consumes CATIA assemblies in lightweight visualization mode using CGR (CATIA Graphics Representation) files. Clash detection, distance measurement, sectioning, walkthrough, and exploded views run faster than in the full design mode.
Why it matters
Aircraft and car-body assemblies with 100k+ parts cannot be reviewed in full design mode. DMU is the review and coordination layer.
Common pitfalls
- Reviewing in DMU when design edits are intended — DMU is read-only on the design model.
- Clash detection with too-loose tolerances — false negatives on real conflicts.
- Visualizing without checking that CGR data is current — review against stale geometry.
CATIA Ecosystem Context
This concept is a core structural element of the CATIA drafting and engineering environment developed by Dassault Systèmes. Dassault Systèmes' high-end PLM-grade CAD — the production tool of aerospace, automotive, and class-A surface modelling.
Relevant CATIA FAQs
❓ What's the difference between CATIA and SOLIDWORKS, both Dassault products?
Different markets. SOLIDWORKS is mid-market mechanical CAD (industrial machinery, consumer products). CATIA is high-end (aerospace, automotive, very large assemblies, class-A surfacing). CATIA's learning curve, price, and capability are substantially higher.
❓ Is CATIA available for individual hobbyists?
No. CATIA is sold through VARs to enterprises and educational institutions. Hobbyists looking for similar capability use Rhino (surfacing), Plasticity (modern direct modelling), Onshape (cloud), or older perpetual versions of SOLIDWORKS via student licenses.
❓ What is the difference between V5 and V6?
V5 is the file-based desktop platform (still widely used). V6 was the predecessor to 3DEXPERIENCE — server-stored on ENOVIA V6. CATIA on 3DEXPERIENCE is the current 'V6'-equivalent track. Many organisations run both V5 and 3DX in parallel.
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🎓 Recommended Practice Lessons
Step-by-step practical exercises and certification-aligned paths chosen by our editors to master this concept:
CATIA V5 Complete Professional Course (Udemy)
🌳 Semantic Crossroads & Navigation Pathways
Trunk-Branch-Leaf ModelExplore cross-referenced learning lanes. Connect this specific method back to macro CAD coordinate foundations, parent software environments, and sibling parameters in our shared taxonomy map.
Global Foundations
Core glossary, interactive graph, and domain-wide concept index.
Ecosystem Integration
Parent design environments and platforms implementing this method natively.
Active Context & Neighbors
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