Nonlinear dynamics of coupled transverse-rotational waves in granular chains

Zhang, Q ORCID:, Umnova, O ORCID: and Venegas, R ORCID: 2019, 'Nonlinear dynamics of coupled transverse-rotational waves in granular chains' , Physical Review E (PRE), 100 (6) , 062206.

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The nonlinear dynamics of coupled waves in one-dimensional granular chains with and without a substrate is theoretically studied accounting for quadratic nonlinearity. The multiple time scale method is used to derive the nonlinear dispersion relations for infinite granular chains and to obtain the wave solutions for semiinfinite systems. It is shown that the sum-frequency and difference-frequency components of the coupled transverse-rotational waves are generated due to their nonlinear interactions with the longitudinal wave. Nonlinear resonances are not present in the chain with no substrate where these frequency components have low amplitudes and exhibit beating oscillations. In the chain positioned on a substrate two types of nonlinear resonances are predicted. At resonance, the fundamental frequency wave amplitudes decrease and the generated frequency component amplitudes increase along the chain, accompanied by the oscillations due to the wave numbers asynchronism. The results confirm the possibility of a highly efficient energy transfer between the waves of different frequencies, which could find applications in the design of acoustic devices for energy transfer and energy rectification.

Item Type: Article
Schools: Schools > School of Computing, Science and Engineering > Salford Innovation Research Centre
Journal or Publication Title: Physical Review E (PRE)
Publisher: American Physical Society
ISSN: 2470-0045
Related URLs:
Depositing User: O Umnova
Date Deposited: 02 Mar 2020 15:13
Last Modified: 16 Feb 2022 04:06

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