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Transmission of Vibrations through Vibration Isolators, Theory and Application

  • Stanislav ZiaranEmail author
  • Ondrej Chlebo
  • Michal Cekan
  • Jiri Tuma
Conference paper
Part of the Mechanisms and Machine Science book series (Mechan. Machine Science, volume 73)

Abstract

Vibration isolation of machines, machinery, technological and civil structures has become an inseparable part of their design. Machines can generate energy with very strong low-frequency vibrations which can affect nearby neighbouring machinery, structures and humans. The transmission of vibration energy is highly dependent on isolation of the frame support and/or usage of resilient foundation mountings. On the other hand, improper vibration isolation of a particular system may results in negative dynamic effects occurring in connected/surrounding technological and civil structures, including working spaces of the machine. Well-designed vibration isolation of potential sources can not only effectively reduce vibration energy into supporting and surrounding structures, but also improve sound energy transmission and fatigue characteristics. The presented paper investigates the conditions for reducing transmission of low frequency vibration energy from a recirculation ventilator and air-conditioning unit employing different types of vibration isolators. The solution of this problem is based on theoretical knowledge and existing methodology for transmission of longitudinal and transverse waves including measurement of the structures involved. Theoretical results were compared with vibration measurements for different conditions and configurations of vibro-isolating elements. Application of specific dynamic sources with respect to blocking forces and wave transmission where also performed to determine their effects on the machine foundation and transmission of energy to its surroundings. Finally, the paper suggests some measures that can be taken which will effectively reduce unwanted vibration energy occurring on the foundation of the machine as well as the machine itself and its immediate surroundings.

Keywords

Vibration Transmission Isolator 

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References

  1. 1.
    Ziaran, S., Chlebo, O.: Noise Control Transmission Methods of the Combustion Engine by Means of Reduction of the Vibration. Archives of Acoustics, 41 (2), 277-284 (2016).CrossRefGoogle Scholar
  2. 2.
    Izrael, G., Bukoveczky, J., Gulan, L.: Influence of nonstandard loads onto life of chosen modules of mobile working machines. Machine Design, 3 (1), 13-16 (2011).Google Scholar
  3. 3.
    Tuma, J. An experimental study on the truck seat suspension frequency response for ride comfort assessment. In Proceedings of 6th International Conference on Vibration Problems. Liberec, 82-83 (2003).Google Scholar
  4. 4.
    Chlebo, O., Sivy, M., Musil, M., Cekan, M.: Design of the uniaxial shaker with variable stiffness. In MATEC Web of Conferences, 1-4 (2017).Google Scholar
  5. 5.
    Ziaran, S., Chlebo, O., Musil, M.: Analysis of the impact of different types of vibration isolation on the dynamic loading of machines and the surrounding environment. In proceedings of Internoise/ASME NCAD Noise control and acoustics division conference, Article number: IN2018-6135 (2018).Google Scholar
  6. 6.
    Ziaran, S.: Vibration and acoustics. Vibration and noise control in industry. Monograph, Issued by Slovak University of Technology in Bratislava, pp. 330 (2006) (in Slovak).Google Scholar
  7. 7.
    Musil, M.: Passive and active vibration isolation of machines. Monograph, Issued by STU Bratislava, (2012).Google Scholar
  8. 8.
    ISO 10846-1: Acoustics and vibration. Laboratory measurement of vibro-acoustic transfer properties of resilient elements. Part 1: Principles and guidelines, ISO, CH 1211 Genève 20, Switzerland.Google Scholar
  9. 9.
    Ziaran, S., Chlebo, O.: Effects of isolating machine vibrations on the transmission of structure-borne and air-borne sound energy. In proceeding Internoise, 6335-6344 (2017).Google Scholar
  10. 10.
    White, R.G., Walker, J.G.: Noise and vibration. John Wiley & Sons inc, Chichester England (1982).Google Scholar
  11. 11.
    ISO 5348: Mechanical vibration and shocks. Mechanical mounting of accelerometers.Google Scholar
  12. 12.
    Darula, R., Ziaran, S.: An experimental study of optimal measurement point location for gear wheel state-of-wear measurements by means of vibro-acoustic diagnostics. Journal of Mechanical engineering, 62 (2), 61-79 (2011).Google Scholar
  13. 13.
    Ziaran, S.: Technical diagnostics. Scientific monograph. Issued by Slovak University of Technology in Bratislava, pp. 332 (2013) (in Slovak).Google Scholar
  14. 14.
    Tuma, J.: Signal processing. Textbook. Issued by TU Ostrava, pp. 156 (2009).Google Scholar
  15. 15.
    Ziaran, S., Chlebo, O.: Dynamic Analysis of the Recirculation Fan with Design of Measures for Reducing the Dynamic Load. Research report SjF STU Bratislava (2018) (in Slovak).Google Scholar
  16. 16.
    Ziaran, S., Chlebo, O.: Measurement on a Technological Device. Measurement object Air-conditioning unit. Research report “Increase the Safety of Nuclear Power Equipment in a Seismic Event”, Trnava (2015) (in Slovak).Google Scholar
  17. 17.
    Ziaran, S., Chlebo, O., Cekan, M.: Effects of the mounting of the 3D seismic exciter on the working environment and surrounding structures. In proceeding of 25. Congress ICSV, Hiroshima (2018).Google Scholar

Copyright information

© Springer Nature Switzerland AG 2019

Authors and Affiliations

  • Stanislav Ziaran
    • 1
    Email author
  • Ondrej Chlebo
    • 1
  • Michal Cekan
    • 1
  • Jiri Tuma
    • 2
  1. 1.Slovak University of Technology in Bratislava, Mechanical Engineering FacultyBratislavaSlovakia
  2. 2.Technical University of OstravaOstravaCzechia

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