Metadata only
Datum
2013Typ
- Working Paper
ETH Bibliographie
yes
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Abstract
We study the propagation of stress waves through ordered 2D networks of granular chains. The quasi-particle continuum theory employed captures the acoustic pulse splitting, bending, and recombination through the network and is used to derive its effective acoustic properties. The strong wave mitigation properties of the network predicted theoretically are confirmed through both numerical simulations and experimental tests. In particular, the leading pulse amplitude propagating through the system is shown to decay exponentially with the propagation distance and the spatial structure of the transmitted wave shows an exponential localization along the direction of the incident wave. The length scales that characterized these exponential decays are studied and determined as a function of the geometrical properties of the network. These results open avenues for the design of efficient impact mitigating structures and provide new insights into the mechanisms of wave propagation in granular matter. Mehr anzeigen
Publikationsstatus
publishedSeiten / Artikelnummer
Organisationseinheit
03985 - Daraio, Chiara (ehemalig)
Anmerkungen
Submitted 3 December 2013.ETH Bibliographie
yes
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