National Natural Science Foundation of China, NSFC, (11902140)
National Natural Science Foundation of China, NSFC
China Scholarship Council, CSC, (202008430071)
China Scholarship Council, CSC
机构署名：
本校为第一且通讯机构
院系归属：
土木工程学院
数理学院
摘要：
This study proposes an acoustic metamaterial featuring a Helmholtz resonator–spiral metasurface (HRSM) to effectively achieve low-frequency broadband sound absorption. A theoretical model is developed to predict the HRSM’s sound absorption performance, and it is validated by numerical simulations and acoustic impedance tube experiments. Results indicated that the spiral metasurface of the HRSM extended the depth of the Helmholtz resonator cavity compared to the Helmholtz resonator, causing the first sound absorption peak of the HRSM to shift ...
