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Characterizing Dissipative Elastic Metamaterials Produced by Additive Manufacturing
Published on: June 28, 2024
Effective elastic moduli of composites with a strongly disordered host material
D A Conyuh1, A A Semenov1, Y M Beltukov1
1Ioffe Institute, Politechnicheskaya Str. 26, 194021 St. Petersburg, Russia.
Abstract:
The local elastic properties of strongly disordered material are investigated using the theory of correlated random matrices. A significant increase in stiffness is shown in the interfacial region, the thickness of which depends on the strength of disorder. It is shown that this effect plays a crucial role in nanocomposites, in which interfacial regions are formed around each nanoparticle. The studied interfacial effect can significantly increase the influence of nanoparticles on the macroscopic stiffness of nanocomposites. The obtained thickness of the interfacial region is determined by the heterogeneity lengthscale and is of the same order as the lengthscale of the boson peak.
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