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Vibration peculiarity of impacting variable cross section cantilever structure

  • V. OstaseviciusEmail author
  • R. Didziokas
  • R. Gaidys
  • V. Barzdaitis
Conference paper
Part of the Mechanisms and Machine Science book series (Mechan. Machine Science, volume 73)

Abstract

The aim of this study is to obtain information about the influence of cross section changes to dynamic behavior of vibrating beam. It was found that location of the changed cross sections influences energy dissipation in the structure and could be used for damping structural vibrations. The contacting interaction of structure with support is characterized by a rich spectral content of excitation impulses capable to excite a wide range of natural modes. The finite element method is used for the defected beam free vibration analysis. The adequacy of mathematical model to physical one is shown employing developed experimental setup. By providing the first three natural frequencies through vibration simulation, amplitude-frequency characteristics are plotted. The most favorable conditions for energy dissipation in the structure material appear when the frequencies of divided by structural defects parts differ twice because its vibrations are pre-phasic, which excites the higher vibration modes.

Keywords

impacting cantilever numerical simulation modes of vibration energy dissipation damping 

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Notes

Acknowlegments

This work was funded by the research groups grant from the Research Council of Lithuania. Project acronym: “DigIndustry”

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Copyright information

© Springer Nature Switzerland AG 2019

Authors and Affiliations

  • V. Ostasevicius
    • 1
    Email author
  • R. Didziokas
    • 2
  • R. Gaidys
    • 1
  • V. Barzdaitis
    • 1
  1. 1.Kaunas University of TechnologyKaunasLithuania
  2. 2.KlaipėdaUniversityKlaipėdaLithuania

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