Lattice Structure from Physical Model

[matthewpgordon]

I have a plastic lattice model (see image) that I need to recreate in Rhino. I’m not sure how to start. The physical model is malleable and flexible. I was able to create the overall structure in Rhino but it’s FLAT (see image). I need the create a rhino model with the same overall curvilinear shape as the physical model.

My first thought was to create a grid of curves and then move control points to later sweep. Unfortunately, moving control points changes the length of the curve. If anyone has advice, please help.

I’m not familiar with Grasshopper but I’m willing to try.

[martinsiegrist]

This can be done with Grasshopper and Kangaroo.

Here’s a post of @DanielPiker with a simple example of one bent strip.

Plywood Strips twisting and bending simulation

Hi Sotiris, Sorry @agakorz14 I missed this discussion the first time around. For an initially flat strip like this where the thickness is very small in relation to the width, the deformed shape should closely approximate a developable strip. There is unlikely to be significant in-plane bending or stretching. If we are just considering the shape it bends/twists into for a certain combination of end positions/orientations, and it is not significantly affected by self weight, then this shape doe…

Your object looks like a scissor structure. Again a simplified example:

Scissor Structure

Yes, when the problem is simple enough that a simple geometric solution is possible I think it’s usually better to use that, but if this is a test for something more complex where such geometric approaches aren’t obvious then you can simulate it like this: scissor_kangaroo.gh (12.9 KB) The key is the ‘rod’ goal - each arm of the scissor is a polyline with 2 segments, and this goal keeps the 2 segments in a straight line.

You can find many more examples using the search function…