Abstract
For the numerical simulation of tire rolling noise, an important subject is the extraction of normal velocity data of the tire surface that are essential for the acoustic analysis. In the current study, a concept of periodically exciting contact force is introduced to effectively extract the tire normal velocity data. The ground contact pressure within contact patch that is obtained by the static tire contact analysis is periodically applied to the whole tread surface of stationary tire. The periodically exciting contact forces are sequentially applied with a time delay corresponding to the tire rolling speed. The tire vibration is analyzed by the mode superposition in the frequency domain, and the acoustic analysis is performed by commercial BEM code. The proposed method is illustrated through the numerical experiment of 3-D smooth tire model and verified from the comparison with experiment, and furthermore the acoustical responses are investigated to the tire rolling speed.
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Lee, HW., Cho, JR. & Jeong, WB. Numerical method for simulating tire rolling noise by the concept of periodically exciting contact force. Int.J Automot. Technol. 18, 823–832 (2017). https://doi.org/10.1007/s12239-017-0081-x
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DOI: https://doi.org/10.1007/s12239-017-0081-x