Helmholtz resonator for reducing tire cavity resonance and in-vehicle noise
Keywords:Acoustic waves, Attenuation, Damping, Frequencies, Mathematical models, Resonance, Resonators, Vehicles, Cavity resonance, Sound attenuation, Tire cavity, Transmission loss
AbstractAutomotive manufacturers expect tire suppliers to investigate alternative approaches of controlling the tire cavity resonance in vehicles other than changing the shape and design of the tire. The intention of this case study is to demonstrate such an approach in eliminating the tire cavity resonance by installing a sound-damping resonator on the wheel assembly. The predicted transmission loss for such a resonator model given in this paper is compared to the experimental result. In terms of quietness, the sound-attenuating resonator controls the cavity resonance and noise. However, this investigation should be extended to include multiple resonator units of different dimensions to attenuate the cavity resonance at a wide range of frequencies.
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