复杂穿孔管结构消声器消声性能研究

Research on Muffling Performance of a Muffler with Complicated Perforated Tube Structure

应用声学有限元和边界元方法对复杂穿孔管结构消声器进行了声学性能的分析计算。仿真结果与试验结果的对比表明,二者吻合性较好,验证了应用声学有限元和边界元方法可以比较准确地预测消声器的消声性能。对不同穿孔管结构参数的消声器进行了传递损失计算,分析了穿孔管主要结构参数对消声器消声性能的影响。采用所提出的消声器优化设计方案,可改善消声器消声效果。

Acoustic finite element and boundary element method were applied to calculate the acoustic performance of a complex muffler with perforated tube. The comparison of simulation results with the experimental results show that the two have good consistency, proving that the method could accurately predict the anechoic performance of the muffler. The transmission loss of perforated tube muffler with different structure parameters was calculated, and the impact of main structural parameters of the perforated tube on anechoic performance of the muffler was also analyzed. With the optimized muffler design plan, anechoic effect of the muffler was improved.