Investigation on Vibrations of a Cantilever Beam with Magnetorheological Fluid by Using the Acoustic Signal

• Authors: J. Snamina , B. Sapiński , W. Wszołek , M. Romaszko
• Languages of publication: EN

Abstracts

EN

The paper presents results of laboratory investigations of a vibrating three-layer cantilever beam with magnetorheological fluid. The goal of the study was to determine changes of the acoustic field around the vibrating beam caused by modifications of the magnetorheological fluid properties. The experimental studies have been carried out on a dedicated measuring stand. The construction of the measuring stand allows fixing one end of the beam in a holder attached to the moving part of the electrodynamic shaker. The magnetic field is produced by an external electromagnet. During the measurements the beam displacements and the acoustic pressure have been simultaneously registered. Frequency analysis of the registered signals has been carried out in 1/12 octave bands near the second natural frequency of the beam. The results reveal that the acoustic signal emitted by the vibrating beam decreases when the magnetic field is applied.

Keywords

EN

46.40.-f; 46.70.De; 43.38.+n

Discipline

• 46.40.-f: Vibrations and mechanical waves(see also 43.40.+s Structural acoustics and vibration; 62.30.+d Mechanical and elastic waves; vibrations in mechanical properties of solids)
• 43.38.+n: Transduction; acoustical devices for the generation and reproduction of sound
• 46.70.De: Beams, plates, and shells

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2012
• Volume: 121
• Issue: 1A
• Pages: A-188-A-190

Dates

published

2012-01

Contributors

author

J. Snamina

• AGH University of Science and Technology, Faculty of Mechanical Engineering and Robotics Department of Process Control, al. A. Mickiewicza 30, 30-059 Krakow, Poland

author

B. Sapiński

• AGH University of Science and Technology, Faculty of Mechanical Engineering and Robotics Department of Process Control, al. A. Mickiewicza 30, 30-059 Krakow, Poland

author

W. Wszołek

• AGH University of Science and Technology, Faculty of Mechanical Engineering and Robotics Department of Mechanics and Vibroacustic, al. A. Mickiewicza 30, 30-059 Krakow, Poland

author

M. Romaszko

• AGH University of Science and Technology, Faculty of Mechanical Engineering and Robotics Department of Process Control, al. A. Mickiewicza 30, 30-059 Krakow, Poland

References

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• [9] http//www.lord.com, dated on: 24 IX 2011
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• [11] B. Sapiński, J. Snamina, M. Romaszko, in: Proc. Vibrations in Physical Systems, Poznań-Będlewo (Poland), 2010, Vol. XXIV, Paper 50
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Identifiers

DOI

10.12693/APhysPolA.121.A-188