Abstract
To study the influence of self-excited vibration on the curve squeal noise in the wheel/rail contact, the dynamical equation for 1-DOF wheel/rail lateral contact system is derived. A new friction coefficient model based on De Beer model is adopted to calculate the friction force in the wheel/rail contact surface. The influence of kinetic and static friction coefficients as well as the lateral creepage on the stability of self-excited vibration system is investigated. The calculation results show that wheel's inherent modes will be excited by the unstable self-excited vibration. If the structural damping of wheel/rail contact system is larger than the equivalent damping of the friction force, or the value of lateral creepage is less than 0.0024, the self-excited vibration system will be stable, and thus the curve squeal noise can be restrained.
| Original language | English |
|---|---|
| Pages (from-to) | 56-61 |
| Number of pages | 6 |
| Journal | Harbin Gongye Daxue Xuebao/Journal of Harbin Institute of Technology |
| Volume | 43 |
| Issue number | 9 |
| State | Published - Sep 2011 |
| Externally published | Yes |
Keywords
- Creepage
- Phase plane
- Self-excited vibration
- Wheel/rail contact
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