Wave propagation in cross-linked random fiber networks | Zendy

Sahab Babaee | Zendy; Ali Shahsavari | Zendy; Pai Wang | Zendy; Catalin R. Picu | Zendy; Katia Bertoldi | Zendy

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Wave propagation in cross-linked random fiber networks

Author(s) -

Sahab Babaee,

Ali Shahsavari,

Pai Wang,

Catalin R. Picu,

Katia Bertoldi

Publication year - 2015

Publication title -

applied physics letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.182

H-Index - 442

eISSN - 1077-3118

pISSN - 0003-6951

DOI - 10.1063/1.4936327

Subject(s) - wavelength , amplitude , fiber , elasticity (physics) , dispersion (optics) , zero dispersion wavelength , physics , wave propagation , statistical physics , optics , optical fiber , materials science , dispersion shifted fiber , fiber optic sensor , composite material , thermodynamics

We numerically investigate the propagation of small-amplitude elastic waves in random fiber networks. Our analysis reveals that the dynamic response of the system is not only controlled by its overall elasticity, but also by the local microstructure. In fact, we find that the longest fiber-segment plays a key role in dynamics when the network is excited with waves of short wavelength. In this case, the Bloch modes are highly non-affine as the longest segments oscillate close to their resonances. Based on this observation, we predict the low frequency dispersion curves of random fiber networks.

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