Optimal fluid passageway design methodology for hydraulic engine mounts considering both low and high frequency performances

Yuan Li, Jason Zheng Jiang*, Simon A. Neild

*Corresponding author for this work

Research output: Contribution to journalArticle (Academic Journal)peer-review

146 Downloads (Pure)

Abstract

This paper investigates the potential for improving the performance of hydraulic engine mounts through fluid passageway designs. In previous studies, a few simple inertia track designs have been investigated with moderate improvements obtained. However, there are countless alternative design possibilities existing; while analyzing each one of them in turn is impracticable. To this end, this paper introduces a systematic methodology to optimize fluid passageway designs in a hydraulic engine mount. First, beneficial fluid passageway configurations are systematically identified using a linearized low-frequency model that captures the relative displacement transmissibility. A nonlinear model is then used to fine-tune the fluid passageway designs for the low-frequency transmissibility improvement, and also for the assessment of high-frequency dynamic stiffness performance. The obtained beneficial designs present performance advantages over a wide frequency range. The design approach introduced in this study is directly applicable to other engine mount models and performance criteria.

Original languageEnglish
Pages (from-to)2749-2757
Number of pages9
JournalJournal of Vibration and Control
Volume25
Issue number21-22
Early online date22 Aug 2019
DOIs
Publication statusPublished - 1 Nov 2019

Keywords

  • dynamic stiffness
  • transmissibility
  • network topology
  • Fluid passageway
  • hydraulic engine mount

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