MN-bending-analysis

Comment

Comment by hamia Aghaiemeybodi on February 4, 2011 at 1:26am

interesting, i'll try to test it the way you explained, i'm working on folding of material now and i hope i can use kangaroo to simulate the materials behavior some how :), it's just in the basic steps . . . your explanation helped a lot :))), thanks.

hope to see you soon again . . .  

Comment by Mårten Nettelbladt on February 3, 2011 at 3:53pm

What I did was to change the curvature in a linear way and the direction in a more smoth way. The smoothness was achieved by running the values through a Sine Graph Mapper.

Interestingly, in the graph above, bending also changes in a linear way and the change of direction is more sine-like, so that assumption seems to be fairly correct. 

Comment by Mårten Nettelbladt on February 3, 2011 at 3:44pm

I create a long surface in small steps. For each step I define the curvature and the direction of the curvature. Some trigonometry make sure that the surface stays "straight" when unrolled. Also, the more steps, the more correct will the surface be (developable). The three MD-sliders give some "key frames" (to lend a term from animation) and the values in between are calculated to change in an even way.

Comment by hamia Aghaiemeybodi on February 3, 2011 at 3:32pm

yes, you showed the plywood model, the grasshopper definition looks great, how did you simulate the plywood's properties in term of bending there? the same way as you did with saw? . . .

Comment by Mårten Nettelbladt on February 3, 2011 at 2:21pm

Thanks Hamia. This one is a digitized (Microscribe) plywood model (I think perhaps I showed you that model?) So I'm only using GH to analyse the curvature here... This video shows a similar model created in GH.

Comment by hamia Aghaiemeybodi on February 3, 2011 at 2:09pm

hum cool, it lots of progress, looks good . . .

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