The Research on Noise Reduction Device Based on Micropore Structure of Honeycomb

Abstract:

Cavitation noise is the major source of noise in fluid power transmission system. Noise value is the most important index to measure the quality of equipments. So reducing noise is the primary goal. Honeycomb called a natural miracle has unique structure and good acoustic performance. A kind of noise reduction device was presented in this paper based on micropore structure of honeycomb and micro-perforated panel theory. The design idea and design scheme of the device had been discussed. Then simulation of the device had been done in order to optimize the design ,the number and position of cavitation had been assured and the open porosity was selected as a judgment index. The results of simulation indicated the device added to fluid system could reduce cavitation noise effectively. The device was made and added to the water circuits in experiment field. Eliminating interference of environmental noise,the noise of water circuits system used the device was decreased by 3dB or so compared with system without the device.

• Periodical: Applied Mechanics and Materials (Volume 461)
• Pages: 95-100
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.461.95
• Online since: November 2013
• Authors: Yong Ming Yao, Shun An Liu, Tao Shang, Yao Lu, Lu Hong Yang, Xu Hui Zhou
• Keywords: Bionic Device, Honeycomb, Micropore Structure, Noise Reduction

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