
Numerical & Experimental Investigation of Low Frequency Tyre Impact Noise and Possible Applications on Tyre Performances
With the rise of electric vehicles in the market and possible introduction of autonomous vehicles in the future, vehicle interior noise and ride comfort are becoming key demands from OEMs across the globe. When the tyre rolls over a macro uneven road surface, it starts to vibrate. These
low frequency transient vibrations reach the interior of the vehicle through the structure borne noise transfer path. Excessive force transmission and its combination with tyre resonances can cause discomfort to the vehicle occupant in terms of high-amplitude transient noise (impact boom).
It is therefore paramount to understand how tyre parameters such as cavity, construction, compounds, reinforcements and tread pattern absorbs impact forces under tyre operating conditions such as inflation pressure, pre-load, vehicle speeds and obstacle dimensions in order to minimize the
spindle force transmission. This study aims to find a correlation between numerical and experimental testing methods in order to further study the influences of the aforementioned parameters. The study shows a good correlation between both methods. The numerical testing can also be implemented
as a part of the design process which can aid in designing a tyre based on performance requirements.
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Document Type: Research Article
Affiliations: Apollo Tyres Global R&D B.V.
Publication date: 12 October 2020
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