Work

Study on the bandgap broadening of two-dimensional acoustic crystals by structure-induced equivalent mass change

Year: 2025

Type: article

Abstract: Research has found that low-frequency broadband phononic crystals can effectively reduce vibration and noise. This paper proposes a method to broaden the bandgap of phononic crystals by adjusting the unit cell structure. Three-component phononic crystal unit cells were designed and optimized based on specific parameters. The study explored the effects of structural changes on the equivalent mass and bandgap characteristics of unilateral three-component and matrix-based five-component symmetrical structures. By transforming cylindrical scatterers into other shapes, the bandgap width was increased. This discovery is beneficial for broadening the bandgap without changing materials, which is advantageous for engineering applications.

Source: Materials Letters

DOI: 10.1016/j.matlet.2025.138530

Authors: Tao Wei, Chi Mingxiang, Chen Shibin, Chen Yutao, Chen Bin

Institutions: Wuyi University, Wuyi University, Chang'an University

Language: English

Topic: Acoustic Wave Phenomena Research

Subfield: Biomedical Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: hybrid

Estimated APC paid: $2,870

Funders: Natural Science Foundation of Fujian Province, Beijing Science and Technology Planning Project