A study of the effect of floor mobility on isolation efficiency of vibration isolators

Cheuk Ming Mak, Jianxin Su

Research output: Journal article publicationJournal articleAcademic researchpeer-review

17 Citations (Scopus)


Despite the benefits of HVAC equipment, this can produce structure-borne sound as well as air-borne sound. This sometimes causes vibration of the electrical and mechanical services (E&M) roof or floor that is high enough to make the spaces they serve unusable. Therefore, good acoustical design plays an important role in the design of HVAC systems. Although vibration isolators are usually employed to reduce the vibrational power transmitted from the machine to the E&M floor, the effect of floor mobility on the isolation efficiency is usually ignored by engineers. A great deal of vibrational energy can sometimes be transmitted to the E&M floor and emitted as noise to the room below. The aim of this paper is therefore to clarify the effect of floor mobility on the isolation efficiency of vibration isolators for HVAC equipment.
Original languageEnglish
Pages (from-to)1-11
Number of pages11
JournalJournal of Low Frequency Noise Vibration and Active Control
Issue number1
Publication statusPublished - 1 Jan 2001


  • Isolation efficiency
  • Mobility
  • Transmissibility

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Building and Construction
  • Acoustics and Ultrasonics
  • Mechanics of Materials
  • Geophysics
  • Mechanical Engineering

Cite this