A piecewise calculation scheme for the mid-to-high frequency strong coupling modelling

Zhongyu Hu, Li Cheng, Laurent Maxit

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review


Mid-to-high frequency vibro-acoustic system modelling is always a challenging topic due to the large number of the degrees of freedom involved. Popular tools like Statistical Energy Analysis (SEA) can hardly provide sufficient details on system response. To tackle the problem, a piecewise calculation scheme based on Condensed Transfer Function (CTF) method was previously proposed, which was shown to be able to accommodate both the prediction accuracy and the modelling efficiency when dealing with a weakly-coupled vibro-acoustic system. This paper examines the applicability of the modelling method when the system involves strongly coupled sub-systems. The quantification of the coupling strength between sub-systems is first discussed by proposing a coupling strength factor based on the proposed CTF framework. A system composed of two coupled cavities is selected as an example to conduct the coupling strength analyses. The piecewise scheme is then validated by tactically tuning the coupling strength between the two sub-cavities. The effect of the coupling strength on the computational accuracy is studied

Original languageEnglish
Title of host publicationProceedings of the 26th International Congress on Sound and Vibration, ICSV 2019
PublisherCanadian Acoustical Association
ISBN (Electronic)9781999181000
Publication statusPublished - 1 Jan 2019
Event26th International Congress on Sound and Vibration, ICSV 2019 - Montreal, Canada
Duration: 7 Jul 201911 Jul 2019

Publication series

NameProceedings of the 26th International Congress on Sound and Vibration, ICSV 2019


Conference26th International Congress on Sound and Vibration, ICSV 2019


  • Mid-to-high frequency
  • Substructure method
  • Vibroacoustic coupling

ASJC Scopus subject areas

  • Acoustics and Ultrasonics

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