Mesh problem

Hello,

I designed a chair using Rhino and grasshoper. I need to do a static analysis of it. I got the output as STEP so that it can be opened in Solidworks and now I can do simulation. However, the program freezes a lot and as you can see in the picture, there are too many meshes. We had reduced the mesh number to 1 with the help of the forum, but the analysis is not done that way. There are currently 16185 solid bodies, I think this is the mesh number, is it possible to reduce it to a number between 1000-2000?

Thanks.

voronoi sc_last.3dm (263.5 KB)
cleaned_voronoi_with_mass_lasttry.gh (24.4 KB)


my impression of the screenshots:
your expecting to much magic to happen from messy geometry.
your aim should be to have a single closed subd, polysurface or mesh.

approach 1: did you try to build your geometry with mulitpipe ?
approach 2A: with some coffeebreak shrinkwrap might generate a single watertight mesh.
approach 2B: use the initial center-curves to generate a pointcloud, divide them by distance, use the option inflate points/vertices and offset in shrinkwrap.
approach 3: implicit surfaces might do the the trick

my guess: 2B might do it.

kind regards - tom

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yes that s a promising apporach…seams to work here.

and please before others dig in:
start grasshopper with disabled solver.
the current definition needs at least 2 plugins and generates a ugly amount of small / short curves, and uses pipe and mesh intersection … will compute depending on your hardware … but not fast at all.

or wait till @Ömer_Ekici provides a minimal version to repeat his issue.

Yes, I tried to create it with multipipe, I even share the file that I reduced to 1 mesh. I need longer and straight lines structurally.

1 Mesh folder:

voronoi sc_last.3dm (263.5 KB)
cleaned_voronoi_with_mass_lasttry_LD.gh (323.0 KB)

why not follow the shrinkwrap apporach ?
the final data you need is a mesh or a polysurface ?
even after shrinkwrap you can follow the garbage to gold workflow by Quadremesh toSubd toNurbs.

?

I just learned Grasshoper and made this 1 mesh version with help from the forum. Right now I need to do a successful static analysis on my current chair. For this I need to get rid of 16185 surfaces and simplify them automatically without damaging the geometry. I can’t do it because I don’t know.

but what is the object type you need for the analysis ?
a mesh (for example a .stl file)
or a solid / closed Polysurface ? (.stp file or similar)

i outlined the workflow above - so maybe first try the conversion with rhino commands.
if you have a prober workflow you still can implement it in grasshopper.

shrinkwrap - see here

kind regards -tom

Please give it a try with Dendro,
https://www.food4rhino.com/en/app/dendro


cleaned_voronoi_with_mass_lasttry.gh (314.9 KB)

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cleaned_voronoi_with_mass_lasttry_LD Edited Vo.gh (319.2 KB)

Topologizer

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