[geodesic 00082] Re: Aspension Arch & Zome Models
Bob Burkhardt
Thanks for your kind words. The data files are also available at
http://bobwb.tripod.com/tenseg/tview/models/index.html . Tim Tyler was
using them with Springie at one point I think. He had some trouble
because I had duplicate points in the models, but I have fixed that and
now all points are unique. The way prestresses are distributed in the
aspension models is a mystery to me. They seem to concentrate at either
end. I would like to find a configuration where the distribution is a
little more even. The dodecahedron might be interesting for Burning Man
as a giant tumbleweed. Of course control might be a problem.
On the zome sculptures, I am taken by 1055. As I posted there, I am
reminded of the tetrahelix. It generates curves seemingly out of nowhere
(synergetically).
Bob
On Fri, 10 Oct 2008 19:10:38 -0700 Patrick Salsbury
<sals...@sculptors.com> writes:
> This is one of the posts from the UB hosted list last summer, so this
>
> reply will help to stitch together the continuity of the two stages
> of
> its lifecycle. :-)
>
> I'm just going through some old mail, and getting a chance to
> explore
> some of the things I'd skimmed in the past. I wanted to mention
> this,
> because it's really tremendous, Bob. Not only is the aspension arch
>
> cool in and of itself, but I followed your link to the tensegrity
> viewers, and they just blew me away! Some of those models are
> astonishing! (The "Dodecahedron with X-Column Edges" just blew me
> away.)
>
> http://bobwb.tripod.com/tenseg/tview/index.html
>
> Thanks so much for such a great tool. I thought it was worth
> mentioning again, so more people can go and explore it. :-)
>
> Here's a link to my Zome Structures gallery. I need to add more of
> my
> model photos to it, but of particular note in the current collection
>
> of photos are the various shots of the aspension dome that I made,
>
> including a shot of the whole extended structure SUSpendend, rather
>
> that ASpended, so you can see the individual layers. It was a
> concept
> model for a potential structure for Burning Man, but so far it's the
>
> only version that has been built.
>
> There's also a shot of my "Triple Bucky" sculpture, which is three
>
> nested models of a C60 Buckyball, all made from glow-in-the-dark
> zome. It is hanging near a Compact Fluorescent UV/Blacklight, and
>
> makes for a very nice and dynamic sculpture. I should shoot some
> video
> of it.
>
> I still have both of these models assembled, as well as some others.
> .
>
> http://reality.sculptors.com/gallery/view_album.php?set_albumName=Zome
>
> Pat
>
>
> On Jun 30, 2008, at 11:59 AM, Bob Burkhardt wrote:
>
> > Ref: http://bobwb.tripod.com/synergetics/photos/marcus.html
> >
> At the bottom of the above-referenced page, I have put my design for
>
> > an aspension arch. I have had this in the back of my mind for
> > awhile, and the occasion of Jan's presentation on using the ANSYS
>
> > civil engineering software to design tensegrity structures at the
>
> > Bridges conference in Leeuwarden this July (see
> bridgesmathart.org)
> > seemed a good one.
> >
> > It seems a reasonable design. I have not honed the base
> coordinates
> > so it sits /exactly/ flat and, as seems to be the case with Jan's
>
> > aspension tower too, the prestresses are heavily concentrated in
> the
> > bases.
> >
> > Bob
--
Bob Burkhardt
http://www.freewebtown.com/bobwb/ts/synergetics/photos/