XIA Yuhong¹ JIANG Hongyuan¹ WU Guoqi¹ E. A. Izzheurov²

(1 School of mechatronics engineering, Harbin Institute of Technology  Harbin 150001)

(2 Samara State Aerospace University  Samara of Russia 443086)

Received Apr. 10, 2008

Revised Jun. 10, 2008

Abstract The sound absorption performance of Metal Rubber material was studied theoretically and experimentally. The acoustic impedance rate and the sound absorption coefficient were derived based on the acoustic parameters of metal rubber material. The relation of structure constant, compressibility modulus and structural parameters was investigated experimentally. The results showed that the specimen of metal rubber with the same mean porosity diameter had the same structure constant. For the same structural parameters, the compressibility modulus of metal rubber material was approximately constant in certain frequency range. The calculated acoustic parameters are in good agreement with the experimental results, demonstrating the effectiveness of theoretical models.

PACS numbers: 43.50, 43.20