Abstract
The aim of this study was to explore the mechanism of pattern groove air-pumping noise; the tire model of 205/55 R16 was chosen as the research object for this paper. By using a rolling analysis of the 205/55 R16 passenger car tire and extracting the volume change of the pattern groove produced as the tire roll across the road, a model of the air-pumping noise was established using computational fluid dynamics (CFD), and apply the groove volume change information as the noise compute boundary condition. The noise spectrum comparison between the simulation and measured results was used to validate the proposed analysis method and model. Through analysis of the effects of tire load, rolling speed, and inflation pressure on the air-pumping noise, and obtaining a measurement of the air flow field and variation characteristics inside the tire footprint domain. The results show that dynamic pressure, which results from unsteady air flow, acting on the groove surface, is the main generate source of the noise that air-pumping noise.
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