Transmission Loss of Metallic Foams for the Local Resonance
In order to explore a new material of noise pollution control, transmission Loss of metallic foams was analyzed for Local Resonance. And a model on sound insulation loss of the closed-cell metallic foams plate was presented on base of the former and correlative theory. The results show that sound insulation property of the closed-cell metallic foams plate is a biggish change with the different parameters. And it is found that sound insulation loss of the closed-cell metallic foams plate has an extreme value to the some frequency. It is reckoned that there is a phenomenon of the brush-fire sympathetic vibration in closedcell metallic foams plate. The resonance may sometimes greatly improve the effect of sound insulation. The result will be very important to future engineering application of the closed-cell metallic foams plate.
foam metals transmission loss sound insulation
Bao Huai-qian Han Bao-kun
College of Mechanical and Electronic Engineering Shandong University of Science and Technology Qingdao,Shandong China
国际会议
北京
英文
1-4
2009-06-11（万方平台首次上网日期，不代表论文的发表时间）