Kang, Jian; Fusaro, Gioia; Yu, Xiang; Cui, Fangsen; (2022) Development of a window system with acoustic metamaterial for air and noise control. In: Proceedings of 10th International Conference on Computational Methods (ICCM). International Conference on Computational Methods (ICCM): Virtual.

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Abstract

To improve window performances in reducing noise and allowing for air exchange, most current approaches focus on techniques such as double glazed and ducted designs, generally leading to bulky designs, visually non-optimised, and with narrow-banded frequency. In this research, window systems based on acoustic metamaterials (AMMs) are developed, and both natural air ventilation and acoustic performances are evaluated. The systems incorporate bistable auxetic metamaterials and acoustic origami metacage designs which are particularly interesting for their reconfigurable and deployable nature. Several design cases with different design features are examined, and a specific design is then selected for a parametric analysis using Finite Element Method (FEM) aiming to optimise the acoustical performance. It is demonstrated that significant improvement in acoustic performance can be obtained in terms of Transmission Loss (TL). The use of AMMs could lead to designs with manifold merits over traditional windows, including compact size with deployability, easy reconfigurability and installation, and thus paving new direction in ventilation window design.

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