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- W2079463515 abstract "Growth of railhead roughness (irregularities, waviness) is predicted through numerical simulation of dynamic train–track interaction on tangent track. The hypothesis is that wear is caused by longitudinal slip due to driven wheelsets, and that wear is proportional to the longitudinal frictional power in the contact patch. Emanating from an initial roughness spectrum corresponding to a new or a recent ground rail, an initial roughness profile is determined. Wheel–rail contact forces, creepages and wear for one wheelset passage are calculated in relation to location along a discretely supported track model. The calculated wear is scaled by a chosen number of wheelset passages, and is then added to the initial roughness profile. Field observations of rail corrugation on a Dutch track are used to validate the simulation model. Results from the simulations predict a large roughness growth rate for wavelengths around 30–40 mm. The large growth in this wavelength interval is explained by a low track receptance near the sleepers around the pinned–pinned resonance frequency, in combination with a large number of driven passenger wheelset passages at uniform speed. The agreement between simulations and field measurements is good with respect to dominating roughness wavelength and annual wear rate. Remedies for reducing roughness growth are discussed." @default.
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- W2079463515 date "2003-10-01" @default.
- W2079463515 modified "2023-09-23" @default.
- W2079463515 title "Numerical prediction of rail roughness growth on tangent railway tracks" @default.
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- W2079463515 doi "https://doi.org/10.1016/s0022-460x(03)00713-2" @default.
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