消声器共振腔及穿孔隔板消声特性数值分析

Numerical analysis of mufflering characteristic for resonator and perforated clapboard in muffler

采用声学软件sysnoise对消声器共振腔及穿孔隔板消声特性进行了分析研究。对不同穿孔管结构的共振腔的传声损失进行了计算,分析归纳了穿孔管结构参数对共振腔消声特性的影响规律。对穿孔隔板的声学特性进行了模拟,揭示了穿孔隔板与共振腔在消声过程中存在耦合关系,穿孔隔板改变了消声器通过频率。

SYSNOISE. The The acoustic performance of resonator and perforated clapboard for muffler was studied by insertion loss of resonator with different perforated pipe structures concludes some rules that the structural parameters affect mufflering acoustic performance of perforated clapboard, it indicates that clapboard and resonator ,and perforated clapboard can change characteristic By is calculated. the simulation these is coupling relation between perforated the crossing frequency.