Kangaroo

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THIS FORUM IS NO LONGER ACTIVE. PLEASE POST ANY NEW QUESTIONS OR DISCUSSION ON:

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The discussions here are preserved for reference, but new questions posted here are likely to go unanswered.

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

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Membrane Tensegrity

by RadekS

Jul 26, 2012

Hi,

I`m working on tensegrity structures where as tensile members I`m using membranes (mesh). After few successful tests I have problem with quite simple one, but can`t find a reason why members which should stay in place (anchor points) are shoot up "to the sky" ?

Any ideas?

  • up

    Daniel Piker

    Interesting model!

    The problem is caused by the fact that the structure starts out below the ground plane, and you have 'Floor' switched on in settings

    So when simulation starts, those points below Z=0 are getting suddenly projected back up to ground height, causing it to become unstable.

    I would suggest just moving the whole model upwards, and/or reducing the timestep further

    2

    Jul 26, 2012

    • up

      Vladimir

      Hi, wercyngetoryks! 

      How did you make this mash? 

      4

      Aug 20, 2012

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      • up

        Zifeng Wei

        Hi eR, amazing stuff first of all! I'm quite new to kangaroo and now working on a membrane tensegrity project. For some reason cannot get your 3dm file to load properly, got Rhino 4 SR9. Is it a version problem or do you have any new definitions?

        Thanks in advance!

        Best,

        Zifeng

        Mar 16, 2013