[x3d-public] Why CAD Surface Geometry is Inexact | Another Fine Mesh

[Brutzman, Donald (Don) (CIV)]

https://blog.pointwise.com/2017/11/29/why-cad-surface-geometry-is-inexact/

Why CAD Surface Geometry is Inexact | Another Fine Mesh

November 29, 2017	by John Chawner

SSI-badgeThe fact that geometry models from a CAD system are inexact may surprise some people. But the explanation provided here by guest authors Benjamin Urick and Benjamin Marussig may be one of the most concise explanations of that fact I’ve seen. They illustrate the reason I say geometry modeling is to mesh generation as turbulence modeling is to CFD. It’s fair to say that the majority of that challenge arises from the intersection curves used to trim surfaces. And here’s why –

Guest Authors:
Dr. Benjamin Urick, nVariate, Inc. (benurick [at] nvariate.com)
Dr. Benjamin Marussig, TU Graz (marussig [at] tugraz.at)

Modern engineering design-analysts rely on Computer-Aided Design (CAD) applications to create geometric models of parts and assemblies. Such models provide necessary input for a variety of design and engineering activities, including computational engineering analysis (Computer-Aided Engineering or CAE), manufacturing operations (Computer-Aided Manufacturing (CAM), additive manufacturing, etc.), metrology, graphics, etc.
[...]

all the best, Don
-- 
Don Brutzman  Naval Postgraduate School, Code USW/Br       brutzman at nps.edu
Watkins 270,  MOVES Institute, Monterey CA 93943-5000 USA   +1.831.656.2149
X3D graphics, virtual worlds, navy robotics http://faculty.nps.edu/brutzman