The Transport Research Foundation commissioned TRL Limited to carry out research on the propagation and screening of noise generated by the interaction between vehicle tyres and road surfaces. The research was undertaken in 2000/01.
The report describes the novel application of a 3-dimensional boundary element method to the problem of determining noise propagation from a truck tyre fitted to a steadily moving vehicle. The report considers the problem of the trade off between computational efficiency and calculation accuracy, and the mathematical representation of the surface of the tyre and the sources of tyre noise. The report also describes the use of this approach in the initial development of potential forms of shields and enclosures to reduce noise propagating to the far field. It also discusses how the calculations of the sound field in the region of the tyre and wheel arch might be applied to determine noise levels at further distances.

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