多孔橡胶材料声传递损失性能分析:数值结果  

Sound Transmission Loss Analysis of a Porous Rubber Plate: Numerical Results

作　　者：应申舜[1] 卢奂采[1] 姜伟[1] 

机构地区：[1]特种装备制造与先进加工技术教育部/浙江省重点实验室(浙江工业大学),浙江杭州310014

出　　处：《轻工机械》2014年第1期4-7,共4页Light Industry Machinery

基　　金：浙江省自然科学基金资助项目(Y1110953);浙江工业大学特种装备制造与先进加工技术教育部重点实验室开放基金(2011EM008)

摘　　要：研究带有无孔薄覆盖层的多孔橡胶板构件的声传递损失特性,给出了63 Hz^8 kHz频率范围内,不同材料特性如弹性模量、橡胶密度,不同结构参数如开孔率、黏性特征长度、热特征长度对多孔橡胶板声传递损失的影响。数值分析结果表明:如其它参数保持为常数,在2~8 kHz频率范围内增加开孔率、在350 Hz^2 kHz频率范围内增加材料密度、在63~160 Hz频率范围内调整材料弹性模量,都可显著改善多孔橡胶板的隔声性能。Sound transmission loss characters of a porous rubber square plate with thin solid rubber coating is studied. The impacts of various material properties such as modulus of elasticity and rubber density, as well as structural dimensions such as porosity, viscous characteristic length and thermal characteristic length to TL within 63 Hz - 8 kHz frequency range is presented in detail. The numerical results show that either increasing the porosity in 2 kHz - 8 kHz, or increasing the density in 350 Hz - 2 kHz, or increasing the Young＇s modulus in 63 Hz - 160 Hz while all other parameters hold constant, can remarkably improve the performance of sound transmission loss of porous rubber plate.

关 键 词：多孔橡胶板 声传递损失 有限元与统计能量混合方法 有限元法 统计能量分析法 

分 类 号：TB535.1[理学—物理]