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Dynamics & vibration
A single wheel flat
The rhythm of a train and what tunes it · narrated
- Duration
- 1:24
- Year
- 2026
The case
A train is a rhythm: 25 m coaches and axles 2.5 m apart, 22 per second at 200 km/h. On firm ground, 8 mm/s reach a buried pipeline. One wheel flat hits 19 times per second and raises that to 14 mm/s. Under-sleeper pads filter the upper bands but amplify near their natural frequency: the overall peak drops only from 14 to 11.5 mm/s.
Topics
- Vibration spectra
- Mitigation
- Narrated explainer
Basis. Generic synthetic case built for this piece. No client data. Not a design verification.
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