English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Zendy Open

Presents the pdf analysis as premium feature

PDF Analysis

Insights

Presents the summarisation as premium feature

Summarisation

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the zaia usage as premium feature

ZAIA

Zendy Tools

Zendy Plus

Presents the access of premium content as premium feature

Premium Content

We present a novel device that can offer two extremes of elastic wavepropagation --- nearly complete transmission and strong attenuation underimpulse excitation. The mechanism of this highly tunable device relies onintermixing effects of dispersion and nonlinearity. The device consists ofidentical cylinders arranged in a chain, which interact with each other as pernonlinear Hertz's contact law. For a `dimer' configuration, i.e., two differentcontact angles alternating in the chain, we analytically, numerically, andexperimentally show that impulse excitation can either propagate as a localizedwave, or it can travel as a highly dispersive wave. Remarkably, these extremescan be achieved in this periodic arrangement simply by \textit{in-situ} controlof contact angles between cylinders. We close the discussion by highlightingthe key characteristics of the mechanisms that facilitate strong attenuation ofincident impulse. These include low frequency to high frequency (LF-HF)scattering, and turbulence-like cascading in a periodic system. We thusenvision that these adaptive, cylinder-based nonlinear phononic crystals, inconjunction with conventional impact mitigation mechanisms, could be used todesign highly tunable and efficient impact manipulation devices.

Extreme control of impulse transmission by cylinder-based nonlinear phononic crystals