Muffler topology analysis and its sub-structure division method based on graph theory

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Journal of Vibration and Shock ›› 2018, Vol. 37 ›› Issue (17) : 236-240.

ZHANG Yang,DENG Zhaoxiang,WEN Yiyun

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Abstract

The correctness of the finite element method (FEM) to predict vehicle exhaust muffler’s performance was verified through comparing test results and simulation ones. The effects of the muffler’s substructure connection mode on its whole performance were discussed using FEM. The theoretical cause of these effects was explained from the view point of topology. A visual topology graph was proposed to intuitively reveal a muffler’s inner connection relations based on the graph theory and summarizing connection relations inside the muffler. The specific method for dividing the muffler substructures was gained according to different functional structures’different features indicated in the muffler’s topology graph. Finally,actual examples were used to verify the engineering applicability of the proposed muffler topology graph.

Key words

exhaust muffler / graph theory / topology / sub-structure division

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ZHANG Yang,DENG Zhaoxiang,WEN Yiyun. Muffler topology analysis and its sub-structure division method based on graph theory[J]. Journal of Vibration and Shock, 2018, 37(17): 236-240

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