柔性壁扩张式消声器的消声性能分析及优化

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振动与冲击 ›› 2023, Vol. 42 ›› Issue (21) : 142-148.

论文

柔性壁扩张式消声器的消声性能分析及优化

刘晓昂1，韩子康1，李浩2，甄冉3，李来鑫3，上官文斌4

作者信息 +

Analysis and optimization of silencing performance of flexible wall expansion muffler

LIU Xiaoang1, HAN Zikang1, LI Hao2, ZHEN Ran3, LI Laixin3, SHANGGUAN Wenbin4

Author information +

文章历史 +

摘要

在车用进气管路中，针对传统刚性壁消声器消声效果的局限性，以柔性壁扩张式消声器为研究对象，建立了其声固耦合解析模型并进行了验证，对比分析了刚性壁消声器与柔性壁消声器的消声性能。以提高消声器的传递损失峰值与均值为目标，以柔性壁杨氏模量、壁厚及消声器扩张比为优化变量，采用遗传算法对柔性壁消声器进行了优化。最后，对所设计消声器的耐负压性能进行了分析。结果表明，所建立的模型具有较高的精度；相比于刚性壁消声器，柔性壁消声器具有更高的传递损失峰值和更低的峰值频率；所采用优化方案具有有效性；所设计消声器在进气管路中有良好的适用性。

Abstract

In the intake pipeline of vehicle, for the limitations of the sound attenuation performance of traditional muffler with rigid walls, taking expansion muffler with flexible walls as the research object, an analytical model of sound - structure coupling of expansion muffler with flexible walls is established and verified. The sound attenuation performance of the muffler with rigid walls and flexible walls were compared. Improving the peak value and mean value of the transmission loss of the muffler were setted as the goal, the Young's modulus and wall thickness of flexible walls, the expansion ratio of the muffler were used as the optimization variables, the muffler with flexible walls was optimized using genetic algorithm. The results show that the established model has high accuracy; Compared with muffler with rigid walls, muffler with flexible walls have higher peak transmission loss and lower peak frequency; the optimization scheme adopted is effective; the design muffler is applicable in the intake pipeline.

导出引用

刘晓昂1，韩子康1，李浩2，甄冉3，李来鑫3，上官文斌4. 柔性壁扩张式消声器的消声性能分析及优化[J]. 振动与冲击, 2023, 42(21): 142-148

LIU Xiaoang1, HAN Zikang1, LI Hao2, ZHEN Ran3, LI Laixin3, SHANGGUAN Wenbin4. Analysis and optimization of silencing performance of flexible wall expansion muffler[J]. Journal of Vibration and Shock, 2023, 42(21): 142-148

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