Regularization of complex flexibility of layered models of railway track

Resumo

In this contribution, a regularization technique of the function representing the complex flexibility of
layered models of ballasted railway track is proposed in a way that allows one to keep the general steps from the
one-layer model and analyze in depth other models that are inherently more realistic. With this regularization, it
is also possible to more precisely analyze how damping can negatively affect the instability of two or more moving
proximate masses. The results are presented in a dimensionless form, and it is demonstrated that the proposed
technique works reasonably well.