lateral vibration

lateral vibration

A vibration in a helicopter in which the rotor moves back and forth in a lateral plane, or side-to-side direction. Lateral vibration is often caused by an unbalanced main rotor.
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This is because that the vertical vibration has a larger amplitude ratio than that of the lateral vibration (Fig.
It is inferred that the peak is not a distinct resonance due to lateral vibration because the influence of the longitudinal and vertical direction vibrations are strong.
Because there is a tight coupling between Maglev train and track beam via vertical levitation force for the track beam, it is inevitable to mainly produce vertical vibration rather than lateral vibration. So this paper only studies the vertical vibration characteristics of track beam.
Through careful analysis of monitoring data from Hakucho Bridge, unexpected along-wind vibration of the bridge tower and associated girder lateral vibration were found, (41) and this new vibration was investigated by wind tunnel testing.
[6] assumed that the external lateral force induced by pedestrians is proportional to the lateral velocity of the bridge to explain the excessive lateral vibration on the London Millennium Bridge.
We can calculate the lateral vibration equations of one control rod to simulate the lateral vibration of the control rod assembly.
In lateral vibration attenuation, many studies have also been carried out: [5] proposed a vertical vibration absorber which is mounted on the support of rotating Rayleigh beam; [6] developed a magnetic based dynamic absorber combining negative stiffness with conventional positive stiffness for rotor system vibration suppression; [7] adopted vibration absorber to eliminate the self-vibration of milling process.
Flint et al., "London millennium bridge: pedestrian-induced lateral vibration," Journal of Bridge Engineering, vol.
The force acts on the elevator car frame to suppresses the lateral vibration of the elevator car to less than half.
Furthermore, Hitachi will achieve both high-speed elevator operation and a safe, comfortable ride by using braking equipment and a governor that safely bring the elevator to a stop, as well as technologies to prevent lateral vibration and to reduce the sensation of ear blockage caused by air pressure differences, it said.
Furthermore, Hitachi will achieve both high-speed elevator operation and a safe, comfortable ride by using braking equipment and a governor(3) that safely bring the elevator to a stop, as well as technologies to prevent lateral vibration and to reduce the sensation of ear blockage caused by air pressure differences.
Twizell, "Reducing lateral vibration of a rotor passing through critical speeds by phase modulating," Journal of Engineering for Gas Turbines and Power, vol.