Mathematical Model and Finite Element Analysis of Acoustics Performance of Composite Exhaust Muffler

Abstract:

. Since the theory of one-dimensional plane wave is difficult to predict the internal sound field of the complex structure muffler accurately. Mathematical model of the composite muffler is analyzed, and the three-dimensional finite element method is adopted to establish the acoustic model in this paper. Transmission loss and characteristics of internal sound field of the composite muffler are calculated through sound and vibration simulation. Influential effect of the fluid on transmission loss is analyzed. The analysis method and conclusions provide a basis for the design of composite muffler.

• Periodical: Applied Mechanics and Materials (Volumes 651-653)
• Pages: 984-987
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.651-653.984
• Online since: September 2014
• Authors: Xiao Dong Li, Xin Tan Ma*
• Keywords: Acoustic Performance, Composite Muffler, Finite Element Method (FEM), Transmission Loss

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