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Automotive tyre cavity noise modelling and reduction
Noise and vibration in automotive vehicles relates to a feeling of luxury. Noise, Vibration and Harshness engineers spend significant time tuning designs to achieve this. Low noise must be achieved against a requirement to reduce weight, installation time, manufacturing complexity, achieve a carbon...
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| Main Authors: | , |
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| Format: | Default Conference proceeding |
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2016
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| Online Access: | https://hdl.handle.net/2134/22561 |
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| _version_ | 1818171776464584704 |
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| author | Daniel O'Boy Stephen Walsh |
| author_facet | Daniel O'Boy Stephen Walsh |
| author_sort | Daniel O'Boy (1234422) |
| collection | Figshare |
| description | Noise and vibration in automotive vehicles relates to a feeling of luxury. Noise, Vibration and Harshness engineers spend significant time tuning designs to achieve this. Low noise must be achieved against a requirement to reduce weight, installation time, manufacturing complexity, achieve a carbon reduction and an increase in fuel economy. One particularly annoying noise originates in the pressurised air cavity bounded by the metal wheel and tyre rubber surfaces and is referred to as “tyre cavity noise”. It is a particularly problematic resonance due to the low frequency (approximately 200 - 250Hz) and the low loss factor of air, causing high amplitude sound. Traditionally, this is addressed through the careful choice of suspension natural frequencies to avoid coupling resonances and addition of mass damping layers to the cabin and transmission paths. In this paper, a numerical model of the tyre cavity is shown with passive resonators to reduce the noise. Complications that arise due to wheel loading, speed, temperature changes and manufacturing durability are discussed, with an optimisation routine used to obtain tuned Helmholtz resonators for inclusion in wheel spokes. A stationary experimental rig is introduced as a validation tool, with an array of microphones used to find the actual sound pressures. |
| format | Default Conference proceeding |
| id | rr-article-9222560 |
| institution | Loughborough University |
| publishDate | 2016 |
| record_format | Figshare |
| spelling | rr-article-92225602016-01-01T00:00:00Z Automotive tyre cavity noise modelling and reduction Daniel O'Boy (1234422) Stephen Walsh (1250313) Other engineering not elsewhere classified Tyre Tire Sound Automotive Cavity Noise Wheel Design Resonators Helmholtz Engineering not elsewhere classified Noise and vibration in automotive vehicles relates to a feeling of luxury. Noise, Vibration and Harshness engineers spend significant time tuning designs to achieve this. Low noise must be achieved against a requirement to reduce weight, installation time, manufacturing complexity, achieve a carbon reduction and an increase in fuel economy. One particularly annoying noise originates in the pressurised air cavity bounded by the metal wheel and tyre rubber surfaces and is referred to as “tyre cavity noise”. It is a particularly problematic resonance due to the low frequency (approximately 200 - 250Hz) and the low loss factor of air, causing high amplitude sound. Traditionally, this is addressed through the careful choice of suspension natural frequencies to avoid coupling resonances and addition of mass damping layers to the cabin and transmission paths. In this paper, a numerical model of the tyre cavity is shown with passive resonators to reduce the noise. Complications that arise due to wheel loading, speed, temperature changes and manufacturing durability are discussed, with an optimisation routine used to obtain tuned Helmholtz resonators for inclusion in wheel spokes. A stationary experimental rig is introduced as a validation tool, with an array of microphones used to find the actual sound pressures. 2016-01-01T00:00:00Z Text Conference contribution 2134/22561 https://figshare.com/articles/conference_contribution/Automotive_tyre_cavity_noise_modelling_and_reduction/9222560 CC BY-NC-ND 4.0 |
| spellingShingle | Other engineering not elsewhere classified Tyre Tire Sound Automotive Cavity Noise Wheel Design Resonators Helmholtz Engineering not elsewhere classified Daniel O'Boy Stephen Walsh Automotive tyre cavity noise modelling and reduction |
| title | Automotive tyre cavity noise modelling and reduction |
| title_full | Automotive tyre cavity noise modelling and reduction |
| title_fullStr | Automotive tyre cavity noise modelling and reduction |
| title_full_unstemmed | Automotive tyre cavity noise modelling and reduction |
| title_short | Automotive tyre cavity noise modelling and reduction |
| title_sort | automotive tyre cavity noise modelling and reduction |
| topic | Other engineering not elsewhere classified Tyre Tire Sound Automotive Cavity Noise Wheel Design Resonators Helmholtz Engineering not elsewhere classified |
| url | https://hdl.handle.net/2134/22561 |