Abstract
The wheel dynamic model at high frequency was established according to FEM and modal test based on the performances and dimension parameters for the monobloc steel wheel with S-web and the 60 kg/m rail. The cross section deformation of the rail and the effect of its understructure were also considered. The stability of wheel-rail contact system was analyzed in the case of different contact positions and modal damping ratio of the wheel. It is shown that the wheel mode with zero nodal circle has the most obvious effect on the stability of contact system. The increment of lateral creepage can lead the contact system to become unstable, and the effect of creepage is more obvious in flange contact than tread one. The effect of contact position depends on the yaw angle of the rail and the friction coefficient in contact area. The increment of wheel damping can decrease the number of unstable frequency, and the effect of damping is more obvious in flange contact under large yaw angle.
| Original language | English |
|---|---|
| Pages (from-to) | 619-627 |
| Number of pages | 9 |
| Journal | Zhendong Gongcheng Xuebao/Journal of Vibration Engineering |
| Volume | 25 |
| Issue number | 6 |
| State | Published - Dec 2012 |
| Externally published | Yes |
Keywords
- Creepage
- Modal superposition method
- Self-excited vibration
- Stability
- Wheel/rail contact
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