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Flexible Car-Body Modal Answers


  Frequency Damping  
Mode name [Hz] [%] Description:
Lower sway   0.61 11.5 Car-body lateral and car-body roll moves in phase.
Upper sway   1.78 34.7 Car-body lateral and car-body roll moves out of phase.
Body bounce   1.10 16.7 The car-body moves vertically.
Body pitch   1.36 23.7 The car-body pitches.
Body yaw   1.31 43.7 The car-body moves mostly in yaw.
1:st bogie kinematic   4.55 23.1 The two bogies are approximately in phase.
2:d bogie kinematic   4.57 20.3 The two bogies are approximately out of phase.
Body 1:st bending   5.98 10.6 Carbody bending and bogie longitudinal vibration.
Body 1:st bending 14.47 16.9 Carbody bending and bogie longitudinal vibration, out of phase.
Body Torsion mode 10.03   2.6 The carbody structure deforms in torsion
Body 2:d bending 10.99   2.0 Carbody secondary vertical bending mode.


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