![]() However there is one wonderful spatial linkage found by Bennett in 1903 which I first encountered through the work of Zhong You, and particularly this thesis of his student Yan Chen. ![]() In fact most non-planar arrangements of hinges conflict with each other and are completely rigid, giving no mechanism at all. One reason for this is focus is that the geometric complications of dealing with truly spatial linkages are of considerable mathematical difficulty (when using traditional methods). Most deployable structures research has been limited to dealing with planar mechanisms – where although the overall structures have 3D spatial forms, the essential linkages from which they are built up are restricted to certain planes (the pantographic domes of Pinero and Hoberman fall into this category). This ties in with some of my earlier work on deployable structures ![]() GHX grasshopper definition and associated Rhino file here
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