In order to reduce wheel-radiated wideband noise, a new solution that equipped the wheels with multi-degree of freedom (DOF) damped dynamic absorber (DDA) is proposed. The dynamic model of the wheel with absorbers was established. By numerical analysis, the primary structural parameters of the absorber influencing the noise control effect are obtained and optimized. The radiated noise is measured before and after the absorber installed in the laboratory and in the field. The test results show that the wheel-radiated noise could be substantially reduced, especially above 2000Hz. The test results agree well with the theoretical analysis. The parametric analysis provides reference value for the design of multi-DOF DDA

Volume Subject Area:
Rail Transportation
Keywords:
damped dynamic absorber, wheel, noise control
Topics:
Noise control, Wheels
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