MATLAB script and COMSOL models of the article "An efficient multiscale method for subwavelength transient analysis of acoustic metamaterials"
doi: 10.4121/0c31cd57-7ea1-4587-84e7-b9b75ff5fa2e
CC BY 4.0
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.
- 2024-04-18 first online
- 2024-04-24 published, posted
- Dynamic metamaterials breaking through subwavelength application limits (grant code 17884) Netherlands Organisation for Scientific Research (NWO)
DATA
To access the source code, use the following command:
git clone https://data.4tu.nl/v3/datasets/e418a111-416f-43b2-8b6a-4f4c6cf0606a.git
