On a coupling between the Finite Element (FE) and the Wave Finite Element (WFE) method to study the effect of a local heterogeneity within a railway track

摘要

Railway rolling noise is the main source of noise from trains at speeds below about 300 km/h. At the wheel-rail contact area, the track and the wheel are dynamically excited and vibrate together to emit the well-known rolling noise. The rail lies on elastomeric pads, which are essential parts concerning wave propagation. Stiff pads are advantageous as they increase the track decay rate and perform better acoustically.