Abstract
The vertical elastic vibrations of railway vehicle carbodies are needed to reduce from the viewpoint of riding quality. The first bending mode and diagonal distortion mode are commonly observed almost all railway vehicle carbodies. The natural frequencies of the two modes exist around 10Hz which is known to be a sensitive frequency for human. In this paper, a vibration reduction method about the two modes by using active mass dampers is suggested. A stationary excitation test for an actual railway vehicle is conducted to confirm the feasibility of this method. As a result of the excitation test, two modes of above mentioned elastic vibration of the carbody are reduced successfully.
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