Grasshopper

algorithmic modeling for Rhino

hi there,

im searching for information on freeform surfaces made out of elemtents with circular profile, maybe someone can give me some hints ?

thank you very much !

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Hi pyrit,

What do you mean by information? The actual information on how space frames/trusses are constructed, created in real world? Or how can they be constructed in Grasshopper?

If it's first thing you need, you might check some structural engineering Handbook (I recommend the one by Wai-Fah Chen. It has some pretty nice part on space frames). Or check the google for some online material.



If it's the second thing you are looking for then you could check the single layered space frames video tutorial in here. Or double layered in here. Just pipe all the curves, once you done with the tutorial.

hi djordje,

im thinking about thick shells made out of homogeneous elementes with circular section, for example reet.

http://pbr2010.files.wordpress.com/2011/08/mudhif-3.jpeg?w=450&...

so its not about a space frame but more like concrete shells. one question would be how to analyze stresses on freeforms in grasshopper , the other one would be therefore how to figure out how to layout the element to get the desired geometry.

http://www.grasshopper3d.com/photo/albums/carbon-fiber-bench

this project is somehow familiar to the idea but in my case i am looking on a denser layout of the elements, also thicker.

thanks !

I am not sure what "reet" is. It looks like some kind of construction where arcs were made out of straw, and then a linear beams were put in between the arcs.

The project you posted looks very interesting, I was not aware of it. Thank you for the link. Although I am not sure the calculation process has been done in Rhino-grasshopper. I do not think there is a Grasshopper plugin that enables carbon fibre composite materials analysis.

What you could do though, is to use the single value for material properties (some composite material) and apply those setting to your karamba material settings (like Young's modulus). In that case, check the Karamba's shell example files.

hi there,

sorry its spelled reed...

http://en.wikipedia.org/wiki/Reed_%28plant%29

is it possible to analyze a homegenous shell (eg concrete) with karamba to check out where tension/pressure appears ? (similar to scan and solve)

thy !

Yes, of course. Check the upper Karamba shell example files. Replace the material with the specific concrete type you want.

ill try out , thanks for your help !

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