In this paper an experimental and numerical analysis of the corrugation detected in a very sharp curve (radius equal to 110 m) and caused by a vehicle equipped with resilient wheels is shown. The results of the experimental tests carried out on the vehicle demonstrate that different values of the speed are able to trigger corrugation wavelengths in different ranges (30–40 mm and 150 mm). Additional tests are performed in order to make a modal analysis of the track and the wheelset with the aim of setting up a simple mathematical model used for the understanding of the phenomenon. The model for the interaction between the wheel and the rail in frequency domain is capable of predicting the frequency ranges where corrugation is most likely to occur.
Analysis of the Effect of Running Speed and Bogie Attitude on Rail Corrugation Growth in Sharp Curves
Collina, Andrea;Corradi, Roberto;Di Gialleonardo, Egidio;Li, Qianqian
2021-01-01
Abstract
In this paper an experimental and numerical analysis of the corrugation detected in a very sharp curve (radius equal to 110 m) and caused by a vehicle equipped with resilient wheels is shown. The results of the experimental tests carried out on the vehicle demonstrate that different values of the speed are able to trigger corrugation wavelengths in different ranges (30–40 mm and 150 mm). Additional tests are performed in order to make a modal analysis of the track and the wheelset with the aim of setting up a simple mathematical model used for the understanding of the phenomenon. The model for the interaction between the wheel and the rail in frequency domain is capable of predicting the frequency ranges where corrugation is most likely to occur.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
