And how do these values of creepages (Lateral, longitudinal and Yaw) change for small-scale railway vehicle models?
Dear Mr. Prateek,
Kalker tabulates these coefficients in his Ph.D. thesis. You can find approximation functions to these coefficients in my Ph.D. thesis (below) - see page 141.
Thesis ESTIMATION OF STATES AND PARAMETERS FROM DYNAMIC RESPONSE OF WHEELSET
Hope this helps.
Best regards ,
Altan
These coefficients depend on the shape of the contact patch and Poisson ratio, and are independent of the contact size. The same values will be obtained for a full-scale wheel-rail contact as for a scaled contact, as long as the shape stays the same.
Kalker tabulated the coefficients for elliptical contacts only, with aspect ratios a/b or b/a being 0.1, 0.2, ... 1.0, and for Poisson ratios \nu = 0, 0.25 and 0.50. Today, we can compute the same using CONTACT using a fine grid discretization. This avoids interpolation of the tabulated values, and permits extension of the linear theory to non-Hertzian contacts, with non-elliptical contact shapes.
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