Simulation on metro railway induced vibration. Part I: effect of out-of-round wheels

Abstract

This paper discussed the effect of out-of-round wheels on simulation of rail dynamic behavior in the frequency range for ground vibration and ground-borne noise. A train-track interaction model was built by software Simpack and Abaqus. The input roughness was measured from a worn wheel and was applied moving on perfect smooth rail surface in different train speeds. Simulation results indicated that out-of-round wheel would affect the calculation result that could not be neglected, as the affected frequency range would be lower enough to influence the ground vibration (1-80 Hz) and ground-borne noise (16-250 Hz).

Simulation on metro railway induced vibration. Part II: effect of corrugated rail

“…The SIMPACK-ABQUES simulation model was presented in the companion paper [1]. As the only alternating quantity, the input wheel-rail interaction irregularities were introduced in this section.…”

“…The deterioration of running surface, including out-of-round wheels and corrugated rails, as which typical wavelength less than 1000 mm, is also defined as 'acoustic roughness'. In order to distinguish the contribution of running surface deterioration by wheels and rail respectively, out-of-round wheels moving on perfect smooth rail surface in different train speeds had already discussed in a companion paper [1].…”