Lecture 5 Flashcards
AM is very ……… heavy ?
………. is needed throughout the AM process
software
software
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fill in the gaps…
3D data generation aspects:
– Software types to take full advantage of the …….. ……….
– Often requires several different …………… to generate …………. …………..
design freedom
programmes
desired results
what are the 7 different types of 3D modelling
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Parametric Modellers
Probably the most …………. form of 3D CAD
What 3 things does it do?
Use equations & relationships to generate ………..-based
parametric CAD data using ..-…… geometry
What examples of this Software are there?
common
– Solid & Surface Modelling, Assemblies & Engineering drawings
B-Rep
– SolidWorks
– Inventor
– Creo (Pro-E)
– Catia
– NX (Unigraphics)
– SpaceClaim
What are 4 common features of Parametric modeling?
Sketch planes
The feature tree
Provides a chronological description of the
modelling process
Allows infinite modification to the design
What are 5 advantages of Parametric 3d modeling
– Parametric – no undo, undo panic
– Solid modelling – simple and intuitive
– Most have a shallow learning curve
– Compatibility with other platforms
– Single platform for modelling, analysis, rendering & animation
What are 3 disadvantages of Parametric 3d modeling
– Surface modelling is limited (presently)
– Struggle with very organic forms(Possible, requires expert knowledge)
– Data & resource heavy
Surface Modellers
Class A surfacing – G3 ……..
– NURBS surface modelling
– Non-Uniform Rational B………
2 examples of this software are
continuity
Spline
– Rhinoceros (Rhino 3D)
– Autodesk Alias
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Surface Modellers
• Design to support ………….. & Industrial/………… design sectors
– Powerful ………….. platform
– Fills the gap created by parametric modellers
– Industry standard for …. ……… design (Alias)
– Class A (G3 surfacing)
What is a common feature (in 3 parts)
Automotive, Product
surfacing
car body
– Advanced surface manipulation
• Curvature & tangency
• Continuity blending
• UV controls (Isoparms)
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Surfaces modellers
What are 3 advantages of this software type ?
Flowing organic geometry
Advanced surface modelling operations & control
True 3D modelling - not sketch plane-based
Surface modellers
What are the 4 main disadvantages of this type ?
– Non-parametric, lots of deleting &‘undo’
– No feature tree
• Uses layers
– Struggles with ‘simple’ operations –
fillets
– Complex GUI & difficult to master
Polygon Modellers
• Modelling objects by representing or
………….. their surfaces using individual
…………
– Generally ……… but triangles are also possible
What are 4 examples of this type of software
approximating
polygons
quadrilateral
– Autodesk 3DS Max
– Autodesk Maya
– Modo
– Blender
– Z-brush (sculpting)
Polygon modellers
Design to support the ………… & ……………….. sectors
– Incredibly powerful DCC platforms
• D……… C…………C………
– Detailed character modelling
– Photo-realistic rendering
– Cinematic quality animation
What are common features for this type of modeling software
animation, gaming
Digital Content Creation
– Modifiers
• Operators
Polygon Modellers
what is the main advantges of this type of 3D modelling
3D modelling capabilities
• The ability to create almost anything
• Organic, cellular – limitless
Polygon Modellers
What are 4 disadvantages of this 3D modeling method
– Not ‘CAD’ data – compatibility/translation issues
– Not ‘CAD’ modelling – polygon modelling is a different mind-set
– No parametric – sizing is generally ‘guestimation’ (improving)
– Extremely complex GUI & incredibly difficult to master