Vibration control of adjacent beams with pneumatic granular coupler: an experimental study
Jacek Mateusz Bajkowski , Czesław Bajer , B. Dyniewicz , Dominik Pisarski
AbstractA novel type of pneumatic device filled with granular material is proposed in the implementation of a switched control strategy to stabilize the vibration of slender structures. The analytically obtained control law for the airtight, elastic, granular coupler is implemented in a test structure with a relay-type control logic. In the experiment, the deformable granular coupler semi-actively damps an initially deflected pair of adjacent, aluminum beams. Two cases of initial excitation are considered, showing an improvement of up to 33 percent in vibration abatement efficiency compared to the passive case. Although this semi-active device is conceptually simple, its ease of operation and low cost should attract the attention of engineers who seek solutions that can be used to build new structures and upgrade existing ones.
|Journal series||Mechanics Research Communications, ISSN 0093-6413|
|Publication size in sheets||0.5|
|ASJC Classification||; ; ; ;|
|Score|| = 25.0, 09-01-2020, ArticleFromJournal|
= 30.0, 09-01-2020, ArticleFromJournal
|Publication indicators||= 1; = 1; : 2016 = 1.115; : 2016 = 1.667 (2) - 2016=1.854 (5)|
|Citation count*||4 (2020-06-17)|
* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or Perish system.