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periodic materials

Identification of higher-order continua equivalent to a Cauchy elastic composite

Submitted by marco.paggi on
research
homogenization
Higher-order continuum
size-effect
Non-local elasticity
periodic materials

Dear Mechanician,

A novel method for the identification of higher-order continua equivalent to a Cauchy composite has been published, as a result of the collaboration between the following two ERC projects:

http://erc-instabilities.unitn.it

http://musam.imtlucca.it/CA2PVM.html

Full paper:

https://doi.org/10.1016/j.mechrescom.2017.07.002

Abstract:

Journal Club Theme of April 2012: Phononics: Structural Dynamics of Materials

Submitted by mihussein on
video
phononic crystals
acoustic metamaterials
Phononics
phononic materials
periodic materials
band gaps
Bragg scattering
Local resonance
Multiscale dispersive design

Engineering structures are made out of materials and as such there is a natural hierarchy in which a material’s intrinsic properties contribute to shaping up the structure’s response. It is possible however to reverse this hierarchy and engineer materials that are made out of structures. In this case, the intrinsic properties of a material are shaped by the structural response. Such a configuration can only be realized with a repeated structure, forming an array of identical unit cells.

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