Abstract
It has been reported by the authors that recent actual lightweight railway vehicle car bodies have complex flexural vibration shapes. The mode shapes of commuter vehicles are complex in particular, with the roof and floor moving out of phase from each other. Such complicated vibration often worsens the riding comfort. In order to reduce such vibrations, especially those with large relative deformation between roof and floor, a new vibration reduction device has been developed. The new vibration reduction device, which is called SPD (stanchion pole damper), looks similar to ordinary stanchion pole, but it connects the main structure of roof and floor and it has built-in viscous damper. Four SPDs are applied to actual commuter vehicle car body and stationary vibration test is carried out to confirm the validity of SPDs. From the test results, it is shown that the SPD can reduce the flexural vibration of the car body successfully.
