10/8/2023 0 Comments Spring annotations requirelogin![]() Wullens, F., Kropp, W.: A three dimensional contact model for tyre/road interaction in rolling conditions. Vehicle System Dynamics 41(1), 27–49 (2004)įord, R.A.J., Thompson, D.J.: Simplified contact filters in wheel/rail noise prediction. Wu, T.X., Thompson, D.J.: Wheel/rail non-linear interactions with coupling between vertical and lateral directions. Wu, T.X., Thompson, D.J.: A hybrid model for the noise generation due to railway wheel flats. Wu, T.X., Thompson, D.J.: Theoretical investigation of wheel/rail non-linear interaction due to roughness excitation. Nielsen, J.C.O., Igeland, A.: Vertical dynamic interaction between train and track – influence of wheel and track imperfections. Nordborg, A.: Wheel/rail noise generation due to nonlinear effects and parametric excitation. Thompson, D.J.: Wheel-rail noise generation, part I: Introduction and interaction model. This process is experimental and the keywords may be updated as the learning algorithm improves. These keywords were added by machine and not by the authors. Very good agreement is found for different types of roughness excitation. ![]() For validation, the results from the model are compared with an existing time domain model that itself has been validated by field testing. In a first stage, the approach is demonstrated for the calculation of normal contact forces. For the tangential contact, a characteristic function for the friction coefficient is applied. Here, the method of the area of real contact is applied in order to obtain the required spring characteristics. The contact zone is modelled by non-linear contact springs with stiffnesses depending on the roughness of rail and wheel. Track and wheel are described as linear systems by the means of impulse response functions. The model follows an approach that has been used successfully, for instance for the modelling of the interaction between road and tyre. ![]() A time domain model is presented for the dynamic interaction between a railway wheel and rail, which takes into account the non-linear processes in the contact zone and aims at predicting both normal and tangential contact forces. ![]()
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