tag:blogger.com,1999:blog-1606329698370612755.post606129749349129275..comments2023-06-26T12:31:19.981+02:00Comments on The Geometry of Bending: Wrapping conesUnknownnoreply@blogger.comBlogger1125tag:blogger.com,1999:blog-1606329698370612755.post-52731849335836900092009-03-06T05:57:00.000+01:002009-03-06T05:57:00.000+01:00Hello Marten, A curve that might behave the way yo...Hello Marten, A curve that might behave the way you explore with strips of paper, rubber, or metal could be what is sometimes called a plank line (GC.BSplineCurve.PlankLine). The idea of a plank line is that it bends in one direction, twists in the second direction, and is stiff in the third, like a thin but relatively broad board of wood. Julius Natterer did structures like that (http://ibois.epfl.ch/page12022.html; I believe also the Polydome at the Ecole Polytechnique Federale Lausanne) and Judit Leuppi did some research about plank lines published as a paper at the ACADIA 2000 Conference (Plank Lines of Ribbed Timber Shell Structures; available from http://cumincad.scix.net/data/works/att/f197.content.pdf). Another example of such a gridshell seems to be at the Weald and Down Open Air Museum in Singleton, Sussex (images at http://www.flickr.com/search/?w=all&q=downland+gridshell&m=text). <BR/>Regards,<BR/>Volker Muellervm9072https://www.blogger.com/profile/00682695905530794056noreply@blogger.com