Savini, Gabriel (2010) A numerical program for Railway vehicle-track-structure dynamic interaction using a modal substructuring approach.
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This work presents a program for simulations of vehicle-track and vehicle-trackstructure dynamic interaction . The method used is computationally efficient in the sense that a reduced number of coordinates is sufficient and doesn’t require high efficiency computers. The method proposes a modal substructuring approach of the system by modelling rails , sleepers and underlying structure with modal coordinates, the vehicle with physical lumped elements coordinates and by introducing interconnection elements between these structures (wheel-rail contact, railpads and ballast) by means of their interaction forces. The Frequency response function (FRF) is also calculated for both cases of track over a structure (a bridge, a viaduct ...) and for the simple vehicle-track program; for each case the vehicle effect on the FRF is then analyzed through the comparison of the FRFs obtained introducing or not a simplified vehicle on the system.
|Tipologia del documento:||Tesi di laurea (Tesi di laurea specialistica)|
|Relatore della tesi:||Savoia, Marco|
|Corso di Laurea:||Ingegneria meccanica|
|Parole chiave:||rail-track modal analysis substructuring interaction approach vehicle-track-structure vibration|
|Data di discussione della Tesi:||15 Marzo 2010|
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