Abstract:Here, a new type oblique-section nested resonator was designed and its sound-absorbing characteristics were studied.Impedance tube test results showed that different combinations of single layer structures have a tunable low-frequency wide frequency-band sound-absorbing effect; the sound absorption mechanism is air frictions in micro-structure areas and structural resonances causing sound energy dissipated into heat energy.Acoustic-electric analogy model tests showed that sound absorption’s peak and bandwidth can be improved through changing resonator structures’ size and combinations; the proposed nested resonator is easy to fabricate, and has a guide action in low frequency sound absorption engineering.
高南沙,侯宏. 新型斜截面形状嵌套谐振器的吸声特性研究[J]. 振动与冲击, 2018, 37(21): 190-194.
GAO Nansha,HOU Hong. Sound absorption characteristics of a new type oblique-section nested resonator. JOURNAL OF VIBRATION AND SHOCK, 2018, 37(21): 190-194.
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