基于virtual.lab的粘弹性材料吸声性能计算研究  

Sound Absorption Performance Calculation Research of Viscoelastic Materials Based on Virtual.lab

作　　者：任伟伟[1] 李宏伟[1] 程伟[1] 赵树磊[1] 

机构地区：[1]中国船舶重工集团公司第七二五研究所,河南洛阳471023

出　　处：《材料开发与应用》2013年第1期39-43,共5页Development and Application of Materials

基　　金：装备预研项目(YK110303)

摘　　要：本文介绍了一种基于virtual.lab软件的粘弹性材料吸声性能计算方法。首先通过动态热机械仪(DMA)测量材料在不同温度下的低频动态力学性能,依据温频等效(WLF)原理拓展得到材料在宽频范围内的动态力学性能,进而计算出材料的声学参数。依据材料的声学参数便可由virtual.lab软件计算出材料的吸声性能。利用本方法计算了两种橡胶材料的吸声性能,与声管实测结果进行了对比,两者结果基本一致。A sound absorption performance calculation method of viscoelastic materials based on virtual.lab is introduced in the article.Dynamic mechanical performances in low frequencies and different temperatures are measured by Dynamic Mechanical Analysis(DMA),wide frequency mechanical performances are obtained by WLF principle and sound parameters are calculated by dynamic mechanical parameters.Inputling the sound parameters to virtual.lab software,the material's sound absorption performance can be calculated by virtual.lab.Two rubber materials' sound absorption performances are calculated by the method.The calculated results are compared to the measure results.The two results are quite consistent.

关 键 词：吸声性能 粘弹性材料 VIRTUAL.LAB 

分 类 号：TB564[交通运输工程—水声工程]