Identification of the technical state of suspension elements in railway systems
Fecha
2012-01-01
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TAYLOR & FRANCIS LTD
Resumen
The running safety and passenger comfort levels in a vehicle are tightly related to the technical state of the suspension elements. The technical state of the suspension depends of the service life time as its components become old and wear out. In this paper, a study on the dynamic behaviour of a railway vehicle is established in relation to the damping elements in one of its suspension stages. An experimental measurement model is developed, obtaining a set of useful signals for the identification of the dynamic parameters of the vehicle and developing a test through the application of the operational modal analysis technique, using least-squares complex exponential method as a basis to validate the numerical model of the multi-body system. Then, the study focuses on developing numerical simulations for the identification of the technical state of the dampers by the registration of dynamic variables under commercial service conditions and on estimating the state of the suspension elements. © 2012 Taylor & Francis.
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Commercial services, Damping element, Dynamic behaviours, Dynamic parameters, Dynamic variables, Experimental measurements, IRF, Least-squares complex exponential, LSCE, Multi Body Systems, Multi-body models, OMA, Operational modal analysis, Passenger comfort, Railway system, Railway vehicles, Running safety, Technical state, Automobile bodies, Automobile suspensions, Least squares approximations, Modal analysis, Railroad transportation, Suspensions (components)