摘要
在微穿孔板吸声体理论的基础上,基于电力声类比等效电路法建立了双层串联微穿孔板吸声体理论分析模型,分析了双层串联微穿孔板吸声体的共振频率ωs与参数k1、r1的关系。将共振频率ωs与前腔深度D1做为两项设计指标,结合单层微穿孔板吸声体的设计方法,提出了一种双层串联微穿孔板吸声体的设计思路,简化了设计工作。
The model of a double mieroperforated panel （MPP） absorber is established on the basis of the theory of MPP absorber which is based on electronics-dynamics-acoustics analogy equivalent circuit. Analysis is made of the relationship between the resonance frequency ωs of the double MPP absorber and the parameters k1 ,r1. The resonance frequency ωs and the first cavity depth D1 are taken as two guidelines of the design. Integrated with the method of the MPP absorber design, a new design idea of the double MPP absorber is proposed, and the design procedure is simplified.
出处
《机械科学与技术》
CSCD
北大核心
2008年第11期1343-1345,1350,共4页
Mechanical Science and Technology for Aerospace Engineering
基金
国家自然科学基金项目(10574105)
全国优秀博士学位论文基金项目(200451)资助
关键词
双层串联微穿孔板吸声体
设计理论
共振频率
double microperforated panel absorber
design theory
resonance frequency roposed, and the design
