how to create chain net like this?

hello

I would like to simulate a surface like this.

Any ideas appreciated :)

Replies to This Discussion

Permalink Reply by Daniel Piker on March 16, 2011 at 7:21pm

Here's a quick go at it. A spring mesh with a stiffer edge cable.

I started with a surface trimmed split with a curve like this:

then meshed it and anchored the outer edge and the two inside ends. then started the simulation and pulled those ends up and down to get the shape.

The trickiest part is getting a decent mesh from the surface that is reasonably even and not too dense.

Permalink Reply by Wiktor Kidziak on March 16, 2011 at 7:43pm

hm interesting :) do you think any of the Wb components could organize the mesh into nice quads?

Permalink Reply by Wiktor Kidziak on March 16, 2011 at 8:25pm

Do you know why do I get an error like this?

Permalink Reply by Daniel Piker on March 17, 2011 at 4:37am

Have you checked to see which of the force components you are getting the nulls from ?
Also - I suspect that mesh will behave a bit oddly because it is so uneven and has some very skinny triangles.

You could even use another kangaroo definition to generate an even starting mesh by constraining mutually repelling particles to the surface, letting them relax, then taking a Delaunay mesh of them.

Permalink Reply by Wiktor Kidziak on March 17, 2011 at 9:44am

hm Daniel I seem to have problems generating the starting mesh... I don't quite get the technique you described above. I tried subdividing it with weaverbird but I always end up with small spiky triangles that don't work very well...

Permalink Reply by Daniel Piker on March 17, 2011 at 10:11am

When you mesh the surface in rhino, if you play around with the detailed options you can avoid the thin triangles.

Alternatively, there is probably a way to start with a very simple regular mesh and pull it into the right shape.

Permalink Reply by Daniel Piker on March 17, 2011 at 10:46am

much simpler

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