Kinematics in GH?

by Jonathan Chertok

Mar 13, 2012

i am hoping to do some very simple tests with a 9 line linkage to create some shapes and am wondering if anyone interested in this might be able to take a stab at one of these for some research i am working on.

here are a couple of links to some work in kinematics in GH but i think this project would be much simpler.

feel free to contact me on or off-list.

TIA

http://www.grasshopper3d.com/video/rhino-grasshopper-kinematic-syst...

http://spacesymmetrystructure.wordpress.com/2009/02/23/networked-be...

  • up

    Yoann Mescam (Systemiq)

    I think you need to provide more details about what you want to control: constraints on lengths of lines and angles, which points can move (manually or kinematically) and which points move automatically to follow the constraints, etc.

    Mar 15, 2012

    • up

      Jonathan Chertok

      hi sistemiq.

      thanks. it is a little hard to verbalize and also my cad skills are sort of slack. i have a visually summary and I have sent you a link to three files off-line.

      essentially i have been dealing with kinematics as "abstract" research but I have also been dealing with local building codes, which are also somewhat abstract but also very real.

      so the idea is to /combine/ the two and see if I can come up with a "form machine" or a "building from generator" by placing a kinematic /armature/ over the building code allowable envelope. since the code can get quite complicated with various allowances the idea would be (ultimately) to run a number of spaced iterations of a kinematic linkage of some kind and visually (or via data exports) analyze where it has taken advantage of code allowances (such as overhangs), where it fits into various volume calculations etc.

      so, the short answer is that I am hoping to find enough people to have a play with this somewhat real world problem in order to place the armature in a way that the resulting form conforms in some way to the allowable envelope. my first thought is that the nine bar linkage needs another plane and should be a 12 bar linkage...

      first image here is the building envelope. second image is a "nine bar linkage". third imag is a reuleaux tetrahedron: http://formpig.com/blog/?p=6546

      info on nine bar etc: http://formpig.com/blog/?p=6536

      more on reuleaux: http://formpig.com/blog/?p=6451

      let me know if I can clarify because it seems to me that this could/should be doable with enough expertise and intelligence.

      i am sure that doesn't make total sense but I have a feeling that moving it around in cad will at least result in a "seed" that I can grow perhaps in RhinoWorks the kinematic plugin or maybe even Lobster or something similar...

      - Jon

      8

      Mar 15, 2012

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