A review of impact dampers to control cross wind vibration of structures due to vortex shedding

Leonard L. Koss, William H. Melbourne

Research output: Chapter in Book/Report/Conference proceedingConference PaperResearch


This paper reviews the application of chain, ball and beam impact dampers to control cross wind induced vibration of structures. These structures can vibrate with large amplitudes in the cross wind direction when the Scruton number has an insufficient value to prevent high amplitude vibrations and when the Strouhal number achieves a critical value. Thus, added damping is required to reduce the amplitude of motion to prevent possible fatigue failure of the structure in question. Impact dampers are relatively inexpensive and, in general, do not require exact tuning as for the case of tuned mass dampers. These two factors make impact dampers attractive as add on damping for slender structures. Important variables considered in the design of the impact dampers will be discussed and emphasis will be made on the need for testing of the largest possible experimental model of the structure, if possible, due to some of the unknowns, as for example, the coefficient of restitution of the impacting bodies required to provide damping.

Original languageEnglish
Title of host publication43rd International Congress on Noise Control Engineering (Internoise 2014): Improving the World Through Noise Control
Subtitle of host publicationMelbourne, Australia, 16-19 November 2014 [proceedings]
EditorsJohn Davey, Charles Don, Terry McMinn, Liz Dowsett, Norm Broner, Marion Burgess
Place of PublicationMagill North S.A. [Australia]
PublisherAustralian Acoustical Society
Number of pages8
ISBN (Print)9781634398091
Publication statusPublished - 2014
EventInternational Congress on Noise Control Engineering 2014: Improving the World Through Noise Control - Melbourne, Australia
Duration: 16 Nov 201419 Nov 2014
Conference number: 43rd


ConferenceInternational Congress on Noise Control Engineering 2014
Abbreviated titleINTERNOISE 2014


  • Ball
  • Beam
  • Chain
  • Impact damping
  • Structural vibration

Cite this