This article describes and explains the process of 3D scanning and constructing a computational model of the Huberman sphere.
The Huberman sphere is an iconic object made out of multiple scissor like joints arranged in a “icosidodecahedron”formation. It is highly dynamic and can expand up to three times its original size. The complexity of the Huberman dome makes it a preferable object to experiment and practice 3D scanning methods and software tools.
The scanning was done with a “Structured-light 3D scanner” at the institute of mathematics, technical university, Berlin.
The highly dynamic nature of the sphere requited to restrain it using various methods dew to scanning durations and the necessity to rotate the scanned object (or in some cases the scanner).
After the first set of data was acquired, Rhinoceros was used to convert, clean and position the scanned object.
The first data set provided general geometrical information, but the surface quality came out poor and unsuitable for rebuilding. Other sets of scans were needed, this time for the independent parts of the structure.
Converting the files and importing them into Solidworks.
Reconstructing the parts according to the imported scanned geometry (colored red and yellow)
Assembling the newly constructed parts into a dynamic module.
Assembling the complete structure using triangular modules.
The module system was developed to compensate for the lack of computation force and the inability of the software to manipulate real time models of this size and complexity (the complete sphere has the size of a football field). The gaps between some joints are dew to limits of the software assembling function (in reality the joints have a greater degree of freedom in all axises and the complete structure is highly supple and adaptable).
The completed sphere.
Special thanks to Dipl.-Ing. Ben Jastram and the Berlin 3D LAB team.
Michel David 2010
Download the 3D : Huberman_sphere_model