Transmission loss prediction for silencers by using the combination of boundary element method and numerical collocation approach

Liang Yang, Zhen Lin Ji, T. W. Wu

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

A technique combining the boundary element method (BEM) and numerical collocation approach was proposed to calculate the transmission loss of silencers with arbitrary cross-section. The silencer was divided into several substructures. The BEM and the numerical collocation approach were employed combinedly to evaluate the impedance matrices of substructures with non-regular cross-section and axially uniform cross-section respectively, and then the impedance matrices for all substructures were achieved. The transmission loss predictions of several silencers agree well with the results by BEM. The computational efficiency was analyzed and compared with that of the traditional substructure method, the combined technique may save computational time efficiently.

Original languageEnglish
Pages (from-to)153-157 and 206
JournalZhendong yu Chongji/Journal of Vibration and Shock
Volume35
Issue number2
DOIs
StatePublished - Jan 28 2016

Keywords

  • Boundary element method
  • Numerical collocation approach
  • Silencer
  • Transmission loss

ASJC Scopus subject areas

  • Mechanics of Materials
  • Acoustics and Ultrasonics
  • Mechanical Engineering

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