Decoupling Nonclassical Nonlinear Behavior of Elastic Wave Types

Journal Article · Thu Mar 17 00:00:00 EDT 2016 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.116.115501· OSTI ID:1242330

Remillieux, Marcel C.; Guyer, Robert A.; Payan, Cédric; Ulrich, T. J.

In this Letter, the tensorial nature of the nonequilibrium dynamics in nonlinear mesoscopic elastic materials is evidenced via multimode resonance experiments. In these experiments the dynamic response, including the spatial variations of velocities and strains, is carefully monitored while the sample is vibrated in a purely longitudinal or a purely torsional mode. By analogy with the fact that such experiments can decouple the elements of the linear elastic tensor, we demonstrate that the parameters quantifying the nonequilibrium dynamics of the material differ substantially for a compressional wave and for a shear wave. As a result, this could lead to further understanding of the nonlinear mechanical phenomena that arise in natural systems as well as to the design and engineering of nonlinear acoustic metamaterials.

• Research Organization: Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
• Sponsoring Organization: USDOE
• Grant/Contract Number: AC52-06NA25396
• OSTI ID: 1242330
• Alternate ID(s): OSTI ID: 1255159
• Report Number(s): LA-UR-16-20039; PRLTAO; 115501
• Journal Information: Physical Review Letters, Vol. 116, Issue 11; ISSN 0031-9007
• Publisher: American Physical Society
• Country of Publication: United States
• Language: English

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