6533b872fe1ef96bd12d4331

RESEARCH PRODUCT

Rigidity and Dynamics of Random Spring Networks

Jussi TimonenJan ÅStrömM. Kellomaki

subject

PhysicsClassical mechanicsAmplitudeGeneral Physics and AstronomyTransient wavesRigidity (psychology)Exponential decayVibrational spectrum

description

The static and dynamic elastic properties of two-dimensional random networks composed of Hookean springs are analyzed. These networks are proved to be nonrigid with respect to small deformations, and the floppy mode ratio is calculated exactly. The vibrational spectrum is shown to consist only of zero-frequency and localized modes. The exponential decay of the amplitude and velocity of the transient wave front are shown to be exactly described by a quasi-one-dimensional model of noninteracting paths of propagation.

https://doi.org/10.1103/physrevlett.77.2730