噪声与振动控制2012，Vol.32Issue(3)：177-182,6.DOI:10.3969/j.issn.1006-1355.2012.03.041
多孔材料吸声性能分析与设计优化
Analysis and Design Optimization of Porous Materials for Sound Absorption
摘要
Abstract
Sound absorption performance of porous materials is closely related to materials properties, size and shape of the hole and pore-distribution mode. It is significant to research and design porous materials for high sound-absorbing performance. In this paper, the relations between sound energy absorption rate and size and porosity of the materials were presented by studying sound propagation characteristics of porous metallic materials and structures based on surface impedance method and transfer matrix method. Then, an optimization problem was proposed and solved. In the optimization, sound energy absorption rate of the porous structure under a specific frequency was taken as an objective function, and the change rule of the size of cylindrical holes across material thickness was taken as the design parameter. Finally, a gradient porous structure with higher sound energy absorption rate was given through the optimizing design.关键词
振动与波/金属多孔材料/吸声/优化设计/表面阻抗/传递矩阵Key words
vibration and wave / metal porous materials / sound absorption / design optimization / surface impedance /transfer matrix method分类
矿业与冶金引用本文复制引用
陈文炯,刘书田..多孔材料吸声性能分析与设计优化[J].噪声与振动控制,2012,32(3):177-182,6.基金项目
国家重点基础发展(973)计划(编号:2011CB610304) （973）
高等学校博士学科点研究基金项目(编号:20090041110023) （编号:20090041110023）
