# Bending strips wood table

Hi everyone , for the proyect i create an hyperboloid surface using kangaroo , proyect a crv line to get the diagonal strip ! , tesselate on triangles for further unroll and cnc fabrication , will attache real prototype pictures eventualy … rivets will join between strips

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this is reeeeally cool!

thanks for sharing!

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Beautiful! Looking forward to seeing the prototype photos!

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Nice table! I would worry about its stability unless you increase the diameter of the base and/or use a heavy block of material (steel or lead?) at the bottom. Or just attach a disk to the bottom that is the same diameter as the glass top?

Reminds me of experimenting with hull shapes decades ago using thin wood strips I found at a model store, approximately 36 X 5 inches. I was bending and twisting the strip in my hands when I noticed that its stiffness increased dramatically at some combination of bend and twist.

I tried to model it in CAD but had no confidence that I was replicating the natural properties of the wood strip to achieve the observed stiffness, which also happened with a large piece of thin plywood. Something like this:

twist _2024_Jul11a.gh (14.6 KB)

Is anyone aware of this phenomenon and know how to model it?

Hi Joseph , u r talking about active bending , attache link [Active bending in plywood floor structures with in-plane curvature (csic.es)] , document (hal.science)(Active bending in plywood floor structures with in-plane curvature)

The problem lies in transforming the surface from 0 or 1 curvature to double curvature, which will create rigidities at the moment of deforming it, one way is to divide it into strips to discretizece de problem to trasform 0 curvature to just 1 curvature and triangularization so that the axes of unrool are the edges, in my case i check the bending capacity of the thickness in the wood i use

I’ll check out the link, thanks. The idea was to avoid strip planking and take advantage of the very notable increase in stiffness that happens when a bent panel is “tortured” in a certain way.

Except near the bow, the topside panels on the boat in your video are flatter than my experiment, though I recall interesting possibilities that resulted when one end has more bend than the other. Just now I tried modifying my GH model to show this but poor results make me think that on a real panel, the center points of the arc sections are not in a straight line like this… ?