Observation of two-wave structure in strongly nonlinear dissipative granular chains.
In a strongly nonlinear viscous granular chain impacted by a single grain we observe a wave disturbance that consists of two parts exhibiting two time scales of dissipation. Above a critical viscosity there is no separation of the two pulses, and the dissipation and nonlinearity dominate the shocklike attenuating pulse.
Rosas
Alexandre
A
Departamento de Física, CCEN, Universidade Federal da Paraíba, Caixa Postal 5008, 58059-900 João Pessoa, PB, Brazil.
Romero
Aldo H
AH
Nesterenko
Vitali F
VF
Lindenberg
Katja
K