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Freeform Surface Modelling
  • Freeform surface modelling is the art of engineering Freeform Surfaces with a CAD or CAID system.
  • Freeform surface, or freeform surfacing, is used in CAD and other computer graphics software to describe the skin of a 3D geometric element.
  • Freeform surfaces do not have rigid radial dimensions, unlike regular surfaces. They are used to describe forms such as turbine blades, car bodies and boat hulls.
  • Initially developed for the automotive and aerospace industries, freeform surfacing is now widely used in all engineering design disciplines from consumer goods products to ships.
  • Most systems today use nonuniform rational B-spline (NURBS) mathematics to describe the surface forms; however, there are other methods such as Gorden surfaces or Coon surfaces.
  • Free Surface Modelling
    • G0 ? position (touching)
    • G1 ? tangent (angle)
    • G2 ? curvature (radius)
    • G3 ? acceleration (rate of change of curvature)
    • To achieve a high quality NURBS or Bezier surface, degrees of 5 or greater are generally used
  • Free Surface with Computer Aided Design Software CAD suing CATIA V5
    Course description Duration 4 Days The course is made up of the following modules:
    
    
  • Assembly Rules Topics include:
    • Working with environments and zones
    • Positioning Parts
    • Creating Parts in context
    • Multi-Instance Parts
    • Flexible / Moveable Standard Parts, Flexible Assemblies
    • Mirrored Parts and Assemblies
  • DMU for Designers Topics include:
    • Visualisation
    • Inspection and Clash analysis
    • Annotation and Reporting
  • Machined Parts Topics include:
    • Framework Design Methodology
    • Rib Design Methodology
    • Layout Sketches
    • Initial Part Definition
    • Trimming with Limiting Surfaces
    • 2.5 and 5 axis pockets
    • Stiffeners
    • Fillets
  • Drafting and Picture Drawing Methods Topics include:
    • View Generation
    • View Modification
    • Creating Views in CGR mode
    • Creating Views in Raster mode (Picture drawings)
    • Using Scenes
    • Overload Properties
    • Image Capture and Insertion
    • Annotation
  • Guidelines for Methods Topics include:
    • Part/Assembly design
    • File management
    • Layers and Colours
    • Standard parts
    • Data Quality

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