Blending of Surfaces:

Examples and Motivation

Blending surfaces, by providing a smooth connection among various primary or functional surfaces, are extremely common in CAD. Examples include blending surfaces among :

• Fuselage & wings of airplanes
• Propeller or turbine blade and hub
• Bulbous bow and ship hull
• Primary faces of solid models.

Blending (or filleting) surfaces are also by products of manufacturing procedure such as NC milling along with a ball or disk cutter.

As a consequence of continuity conditions, blending surfaces are of higher order, or involve a more complicated formulation than the underlying surfaces to be joined.