Free-pendulum vibration absorber experiment using digital image processing

Richard Landis, Atila Ertas, Emrah Gumus, Faruk Gungor

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review


Using image processing and analysis, the dynamic behavior of the beam-free-pendulum system under low and high sinusoidal excitation was investigated. The system responses were investigated experimentally in the neighborhood of primary resonance condition. The results exhibited autoparametric interaction between the beam and the free pendulum when the primary resonance condition was satisfied. Experiments were conducted for two different pendulum weights under two different shaker forcing amplitudes, and the results were compared. Experimental data were obtained by sweeping between the frequencies that contain the resonance condition under investigation. The results of experiments for different beam-tip mass and pendulum mass ratios indicate that more powerful absorption action can be achieved when the smaller mass ratios are used.

Original languageEnglish
Title of host publicationTopics in Nonlinear Dynamics - Proceedings of the 30th IMAC, A Conference on Structural Dynamics, 2012
Number of pages14
StatePublished - 2012
Event30th IMAC, A Conference on Structural Dynamics, 2012 - Jacksonville, FL, United States
Duration: Jan 30 2012Feb 2 2012

Publication series

NameConference Proceedings of the Society for Experimental Mechanics Series
ISSN (Print)2191-5644
ISSN (Electronic)2191-5652


Conference30th IMAC, A Conference on Structural Dynamics, 2012
Country/TerritoryUnited States
CityJacksonville, FL


  • Autoparametric vibration absorber
  • Free pendulum absorber
  • Internal resonance
  • Nonlinear vibration


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