排气消声器的边界元仿真设计方法

吉林大学学报(工学版) ›› 2004, Vol. ›› Issue (3): 357-361.

排气消声器的边界元仿真设计方法

袁兆成, 丁万龙, 方华, 高峥

吉林大学汽车工程学院, 吉林长春 130022

收稿日期:2003-06-11 出版日期:2004-07-01

Simulation analysis of exhaust muffler with boundary element method

YUAN Zhaocheng, DING Wanlong, FANG Hua, GAO Zheng

College of Automotive Engineering, Jilin University, Changchun 130022, China

Received:2003-06-11 Online:2004-07-01

摘要/Abstract

摘要： 用边界元方法计算了某一摩托车排气消声器的消声性能。结果证明该边界元单元模型正确,计算方法合理。用声模态分析和声压分布图分析的综合方法分析了消声器产生消声低谷的原因,并利用长管道驻波的控制方法加以控制。这一方法对控制以轴向尺寸为主的消声结构的消声低谷非常有效。探索了一种消声器的设计和模拟分析方法。

关键词: 内燃机工程, 排气消声器, 声模态分析, 边界元方法

Abstract: The acoustical behavior of a motorcycle exhaust muffler was simulated with the boundary element method.The results show that the boundary element cell modal is right and the calculation method is reasonable. The causes for the muffler attenuation trough was analyzed by the sound modal analysis and the sound pressure map analysis, and the improvement was put forward with the control measure of the long duct standing wave.This method is effictive to control muffler attenuation of the muffler structure which is Axis symmetry.Thus, a successful muffler design method is developed.

Key words: internal-combustion engine engineering, exhaust muffler, sound modal analysis, boundary element method

中图分类号:

TK413.47

袁兆成, 丁万龙, 方华, 高峥. 排气消声器的边界元仿真设计方法[J]. 吉林大学学报(工学版), 2004, (3): 357-361.

YUAN Zhaocheng, DING Wanlong, FANG Hua, GAO Zheng. Simulation analysis of exhaust muffler with boundary element method[J]. 吉林大学学报(工学版), 2004, (3): 357-361.

参考文献

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[2] 马大猷.噪声控制学［M］.北京:科学出版社,1987.MA Dayou. The Control Engineering Manual of Noise & Vibration［M］. Beijing:Science Press, 1987.
[3] LAI Yishao, RODIN Gregory J.Fast boundary element method for three-dimensoinal solids containing many cracks［J］.Engineering Analysis with Boundery Elements,2003,27(8):845-852.
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