Meshing Nurbs problem


#1

This is a simple arch extruded
any option I use to make a mesh has no effect.
Max size set to 1.0 , aspect to 1 ect
the mesh is always the same
What am I doing wrong ?

gerry


#2

Rebuild the surface.


#3

Hi Gerry,

are you not managing to get the mesh surface at all or are you not satisfied with the mesh surface result?


#4

The mesh result is visible in the image
long mesh elements that go from side to side
I want a mesh with face edges constrained to a maximum length for fem analysis purposes

gerry


#5

Rebuilding the surface gives almost the same result.
The problem is not finding a solution I know how to get the mesh I need ( change degree on the mesh to 3 for example )
I am just pointing out that I am asking for a mesh with fixed attributes on a simple surface
and Rhino is generating a mesh without considering those parameters.
It seems a Bug or no ?

gerry


#6

I have noted trouble with extrusion objects like this (I may have even reported it once here). Rhino has a tendency to mesh these objects with long skinny rectangles, and setting a maximum edge length or pretty much anything else does not work to force subdivide the mesh. I’m afraid the only workaround I found was to convert the extrusion object to a surface/polysurface before meshing. @dalelear Maybe this needs to be looked at…

–Mitch


(Willem Derks) #7

Hi Gerry

Have a look at this topic, it deals with the same issue:

-Willem