Zhijun He
An Efficient Simulation Strategy for The Design of Composite Acoustic Metamaterials.
Rel. Erasmo Carrera, Maria Cinefra, Marco Petrolo. Politecnico di Torino, Corso di laurea magistrale in Ingegneria Meccanica (Mechanical Engineering), 2023
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Abstract
Simulations are promising to test acoustic metamaterials. Still, no ready-made simulation software is dedicated to the tests of acoustic metamaterials. FEM software is a reasonable choice since substructure-compounded acoustic metamaterials are analogous to mechanical systems. Then, challenges come from two main aspects: the way to process massive intermediate data and the effective mathematical model to build a vibro-acoustic environment. Therefore, simulation strategy designs considering efficiency and accuracy are needed. At the same time, the simulation strategy design and the acoustic metamaterial design are mutually dependent. The simulation strategy designs start with choosing the proper simulation software. And this paper chooses MSC Nastran 2020, MSC Actran 2020, and Abaqus 2020 (for convenience, they are called Nastran, Actran, and Abaqus in the following contents) as candidate software due to their distinctive characteristics.
Specifically, Nastran is an expert in structure analyses but not competent in acoustic analyses
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