[scilab-Users] Volume calculation from closed meshed surface

[Samuel GOUGEON]

  ----- Message d'origine -----
De : Carrico, Paul
Date : 08/06/2011 14:23:
> Dear Samuel,
> - The type of facets are either triangles or quads (or both for a mesh using 
> mixed elements),
> - the type of interpolation can be either linear or quadratic where some nodes 
> traduces the curvature .... (for mechanical FEA)
> - coordinate system => cartesian one
> - kind of shape : has a torus to be treated different than a simple sphere ?
> I have some information's on closed surfaces using triangles ... of course a 
> solution is to "split" all the elements into 3 nodes triangles ... but is it 
> the simpliest way ? the most robust one ?
Since you want to work on volumes, you need tetrahedrons instead of triangles,
or hexahedrons instead of quads. AFAIK, there is no universal strategy.
It depends of the topology of the volume (concave/convex, simply or doubly
connexe..). It is not a simple problem.

SG

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