Space-filling bearings in three dimensions.
We present the first space-filling bearing in three dimensions. It is shown that a packing which contains only loops of an even number of spheres can be constructed in a self-similar way and that it can act as a three-dimensional bearing in which spheres can rotate without slip and with negligible torsion friction.
Institute for Computational Physics, University of Stuttgart, Pfaffenwaldring 27, 70569 Stuttgart, Germany. reza@ica1.uni-stuttgart.de
R Mahmoodi
RM
Baram
H J
HJ
Herrmann
N
N
Rivier