SoftwareApplication
name: MATLAB script and COMSOL models of the article "An efficient multiscale method for subwavelength transient analysis of acoustic metamaterials"
description: MATLAB script and COMSOL models of the article "An efficient multiscale method for subwavelength transient analysis of acoustic metamaterials"
description: A reduced-order homogenisation framework is proposed in the article "An efficient multiscale method for subwavelength transient analysis of acoustic metamaterials", providing a macro-scale enriched continuum model for locally resonant acoustic metamaterials operating in the subwavelength regime, for both time and frequency domain analyses. The homogenised continuum has a non-standard constitutive model, capturing a metamaterial behaviour such as negative effective bulk modulus, negative effective density, and Willis coupling. A suitable reduced space is constructed based on the unit cell response in a steady state regime and the local resonance regime. - The effective continuum material properties are computed via the MATLAB script provided here. -A frequency domain numerical example demonstrates the efficiency and suitability of the proposed framework. The macro-scale model is implemented via a COMSOL model provided here. -The direct numerical simulations (COMSOL models) are also provided here.
code repository: https://data.4tu.nl/v3/datasets/609090f4-35ee-4bd8-b3d7-3a1e67db7867.git
author: https://orcid.org/0000-0003-4517-3899
author: https://orcid.org/0000-0003-4029-0308
author: https://orcid.org/0000-0002-0009-6351
author: https://orcid.org/0000-0003-0113-6471
keywords: Homogenisation
keywords: Locally resonant acoustic metamaterials
keywords: Equivalent fluid model
keywords: Micromorphic Enriched Continuum
programming language: Markdown
programming language: Matlab
programming language: Other
license:
  creative work: creativeWork
    name: CC-BY-4.0
reference publication: rsta.2023.0368

https://orcid.org/0000-0003-4517-3899
type: Person
given name: Renan
family name: Liupekevicius Carnielli
name: Renan Liupekevicius Carnielli

https://orcid.org/0000-0003-4029-0308
type: Person
given name: Johannes
family name: van Dommelen
name: Johannes van Dommelen

https://orcid.org/0000-0002-0009-6351
type: Person
given name: Marc
family name: Geers
name: Marc Geers

https://orcid.org/0000-0003-0113-6471
type: Person
given name: Varvara
family name: Kouznetsova
name: Varvara Kouznetsova

rsta.2023.0368
type: ScholarlyArticle
name: An efficient multiscale method for subwavelength transient analysis of acoustic metamaterials
url: https://doi.org/10.1098%2Frsta.2023.0368