Kangaroo

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Kangaroo is a Live Physics engine for interactive simulation, optimization and form-finding directly within Grasshopper.

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Gridshell Form Finding

by Benjamin Hait

Feb 1, 2011

Hi everybody,

 

I'm part of a team investigating kangaroo's application to optimize form finding strategies in gridshell design. We've gotten fairly comfortable with the process of creating catenary meshes through the placement of anchor points. Is there a method of creating anchor boundary conditions through a curve versus a series of points? I've had limited success through iterating anchor point densities, but it's merely imitating a true boundary condition. 

 

Thanks!

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  • up

    Sam Gregson

    Hello,

    Please correct me if I'm wrong becuase I'm having a hard time getting my head around the physics of this but... does the weight of the material not influence the shape of the gridshell? That would be the case for the inverse catenary form would it not, which would then also be the case for the optimum gridshell?

    Also a slight deviation from the original question but nevertheless relevant... Why are the gridshells always compression/hogging shaped? This of course makes sense for materials like concrete (the classic Heinz Isler shells) but for steel (equally as good in tension) why not have hanging structures? I don't mean with cables, I mean actual steel members for example with glass and steel. This would be a refreshing change would it not? Also it would probably eliminate any buckling problems that may exist with arched shells?

    I would really appreciate some thoughts on both topics, feel free to tell me I'm completely wrong on both accounts :)

    Cheers,

    Sam

    1

    Jan 16, 2012

    • up

      M NICK

      Hi Ben,

      I just started to work on the form finding of gridshells using Kangroo. I would be appreciated if you could help me from where should I start. Have you come up with any grasshopper definition for that?

      THanks

      Nick

      Jan 26, 2012

      • up

        Elitsa Dimitrova

        Hello, I am wondering the same thing - how to use a curve as a boundary condition. I would like to construct a shell that operates not only in compression, but also in tension. If you could refer me to a tutorial that deals with the issue, it would be great. Thanks!

        May 4, 2015