Reduction of the vibration amplitudes of a harmonically excited sandwich beam with controllable core

Jacek Mateusz Bajkowski , B. Dyniewicz , Czesław Bajer , Maja Gębik-Wrona , Jerzy Bajkowski


e consider a theoretical analysis and experimental test of a sandwich beam, with a corelayer made of controllable material that can change its properties over time. We show thatthis dynamically excited beam can be sequentially controlled to obtain higher amplitudeattenuation and resistance to the amplitude growth in resonant ranges than when thesmart beam parameters are constant over time. Numerical simulations were performedto study the possibility of shifting beam vibration frequency towards ranges distant fromresonance. An experimental study on a layered beam consisting of two steel bars with apneumatically controlled core made of pressurized granular material was considered. Asimplified control was performed to detune the beam from the resonance frequenciesand reduce the vibrations by 30% in simulations and 10% in experiment.
Author Jacek Mateusz Bajkowski (FPE / IMP)
Jacek Mateusz Bajkowski,,
- The Institute of Mechanics and Printing
, B. Dyniewicz - [Institute of Fundamental Technological Research of the Polish Academy of Sciences]
B. Dyniewicz,,
, Czesław Bajer - [Institute of Fundamental Technological Research of the Polish Academy of Sciences]
Czesław Bajer,,
, Maja Gębik-Wrona - Institute of Aviation [Instytutu Lotnictwa]
Maja Gębik-Wrona,,
, Jerzy Bajkowski - Lotnicza Akademia Wojskowa
Jerzy Bajkowski,,
Journal seriesMechanical Systems and Signal Processing, ISSN 0888-3270
Issue year2019
Publication size in sheets0.75
ASJC Classification1706 Computer Science Applications; 1711 Signal Processing; 2202 Aerospace Engineering; 2205 Civil and Structural Engineering; 2207 Control and Systems Engineering; 2210 Mechanical Engineering
Languageen angielski
Score (nominal)200
Score sourcejournalList
ScoreMinisterial score = 200.0, 10-06-2020, ArticleFromJournal
Publication indicators Scopus Citations = 2; WoS Citations = 1; Scopus SNIP (Source Normalised Impact per Paper): 2017 = 2.874; WoS Impact Factor: 2018 = 5.005 (2) - 2018=5.086 (5)
Citation count*2 (2020-06-17)
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* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or Perish system.
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