Finite Element Analysis Of Wheel/rail Squeal Noise
Free (open access)
217 - 225
B. C. Goo
Wheel/rail squeal noise of trains gives passengers a very unpleasant feeling. But a successful solution to the squeal problem has not been presented until now. In this study, to find out the basic mechanism of the wheel/rail squeal noise, complex eigenvalue analysis by finite element method was adopted as a numerical tool. The positive real parts of the eigenvalues mean the self-exciting instability of the vibration, which is closely related to the occurrence of squeal noise. The effect of parameters such as friction coefficient, wheel/rail contact position, axle load, etc. was examined. It was found that the applied method could simulate unstable modal shapes of the wheel/rail vibration and be used as a good tool for the study of wheel/rail squeal noise. Keywords: wheel, rail, squeal, finite element, complex eigenvalue, friction, instability, contact.
wheel, rail, squeal, finite element, complex eigenvalue, friction,instability, contact.