Synchronization of active mechanical oscillators by an inertial load

Details Synchronization of active mechanical oscillators by an inertial load Synchronization of active mechanical oscillators by an inertial load

2003-07-31

arxiv.org/abs/physics/0307155v1

Phys. Rev. Lett. 91, 114101 (2003)

Physics

Biological Physics

5 pages, 4 figures, To appear in Phys. Rev. Lett

Scientific paper

10.1103/PhysRevLett.91.114101

Motivated by the operation of myogenic (self-oscillatory) insect flight muscle, we study a model consisting of a large number of identical oscillatory contractile elements joined in a chain, whose end is attached to a damped mass-spring oscillator. When the inertial load is small, the serial coupling favors an antisynchronous state in which the extension of one oscillator is compensated by the contraction of another, in order to preserve the total length. However, a sufficiently massive load can sychronize the oscillators and can even induce oscillation in situations where isolated elements would be stable. The system has a complex phase diagram displaying quiescent, synchronous and antisynchrononous phases, as well as an unsual asynchronous phase in which the total length of the chain oscillates at a different frequency from the individual active elements.

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