Abstract
Bearings are mechanical dissipative systems that, when perturbed, relax
toward a synchronized (bearing) state. Here we find that bearings can be
perceived as physical realizations of complex networks of oscillators
with asymmetrically weighted couplings. Accordingly, these networks can
exhibit optimal synchronization properties through fine-tuning of the
local interaction strength as a function of node degree Motter, Zhou,
and Kurths, Phys. Rev. E 71, 016116 (2005). We show that, in analogy,
the synchronizability of bearings can be maximized by counterbalancing
the number of contacts and the inertia of their constituting rotor disks
through the mass-radius relation, m (similar to) r(alpha), with an optimal exponent alpha = alpha(x) which converges to unity for a large
number of rotors. Under this condition, and regardless of the presence
of a long-tailed distribution of disk radii composing the mechanical
system, the average participation per disk is maximized and the energy
dissipation rate is homogeneously distributed among elementary rotors.
DOI: 10.1103/PhysRevLett.110.064106
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