Finite Element modelling of elastomeric sealing components for cylinder-head cover noise and vibration prediction

David A. Nash, Y. Charles Lu, Michael E. Anderson

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

Finite Element (FE) modelling has been used extensively in designing automotive engines and subsystems for evaluating their noise and vibration performance. However, the elastomeric components at the interfaces are often omitted in the FE models owing to the lack of 'effective' elements. The present paper presents a methodology to model the elastomeric sealing components using viscoelastic gasket elements. A cylinder-head cover assembly is analysed because it is a known major contributor to radiated engine noise. First, detailed local FE analyses were performed on an elastomeric gasket and grommet to capture their non-linear load-deflection and contact interferences. Secondly, a global FE model of the cover assembly was constructed where the gasket and grommet were re-modelled with viscoelastic gasket elements. The forced response dynamic analysis was performed to calculate the transmissibility of the cover assembly. The overall approach is applicable to the modelling of elastomeric components in similar structures or engines.

Original languageEnglish
Pages (from-to)287-302
Number of pages16
JournalInternational Journal of Vehicle Design
Volume49
Issue number4
DOIs
StatePublished - May 2009

Keywords

  • Elastomer
  • FE
  • Finite element
  • Gasket element
  • Noise and vibration
  • Sealing

ASJC Scopus subject areas

  • Automotive Engineering
  • Mechanical Engineering

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