One Single Static Measurement Predicts Wave Localization in Complex Structures

Gautier Lefebvre, Alexane Gondel, Marc Dubois, Michael Atlan, Florian Feppon, Aimé Labbé, Camille Gillot, Alix Garelli, Maxence Ernoult, Svitlana Mayboroda, Marcel Filoche, Patrick Sebbah

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19 Scopus citations

Abstract

A recent theoretical breakthrough has brought a new tool, called the localization landscape, for predicting the localization regions of vibration modes in complex or disordered systems. Here, we report on the first experiment which measures the localization landscape and demonstrates its predictive power. Holographic measurement of the static deformation under uniform load of a thin plate with complex geometry provides direct access to the landscape function. When put in vibration, this system shows modes precisely confined within the subregions delineated by the landscape function. Also the maxima of this function match the measured eigenfrequencies, while the minima of the valley network gives the frequencies at which modes become extended. This approach fully characterizes the low frequency spectrum of a complex structure from a single static measurement. It paves the way for controlling and engineering eigenmodes in any vibratory system, especially where a structural or microscopic description is not accessible.

Original languageEnglish (US)
Article number074301
JournalPhysical review letters
Volume117
Issue number7
DOIs
StatePublished - Aug 10 2016

Bibliographical note

Publisher Copyright:
© 2016 American Physical Society.

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