Experimental analysis of sound field in the tire cavity arising from the acoustic cavity resonance

Simulation and Experimental Validation of Sound Field in a Rotating Tire Cavity Arising from Acoustic Cavity Resonance

“…However, their research did not introduce the rotation of tire. According to the actual test equipment [18], a simplified but full scale three-dimensional drum model of the tire-test machine for TACRN is built in Abaqus software. The structural parameters of the finite element model are the same as those of the actual test tire with the test drum machine equipment.…”

“…The time-domain diagram of sound pressure at the midpoint on the outer face of the automobile tire cavity is shown in Figure 6a, and the frequency spectrum of its amplitude are displayed in Figure 6b. From Figure 6b, a crest value appears at 232 Hz that is around the tire acoustic cavity resonance frequencies of 237 Hz and 239.5 Hz [18], so the sound pressure and its spectrum of the tire cavity at the first-order acoustic resonance are captured.…”

“…Figure 10a indicates that there are one peak and one trough in the acoustic cavity and Figure 10b demonstrates that there are two troughs and two crest values. Based on the literature [18,19], the crest values are supposed to arise the positions of 0 degrees and 180 degrees, and the trough values should emerge the locations of 90 degrees and 270 degrees if the automobile tire does not rotate. In fact, since the anticlockwise rotation of the drum causes the velocity of the forward traveling wave (rotating in the same direction of the drum) in the cavity to be larger than the velocity of the backward traveling wave (rotating in the opposite direction), the peak appears near the position of 0 degree and 150 degree in Figure 10b.…”

“…Feng et al [16,17] proposed an analytical tire model, and presented test verifications of forecast on the peak frequency and the consequences showed that analytical tire model can be used to forecast TACRN for a rolling automobile tire in the early design stage. Hu et al [18] performed the test and research of the sound pressure distribution in a rotating tire, and obtained the correlative characteristics of sound pressure in the tire. These achievements lay a good foundation to understand TACRN.…”

Analysis of Tire Acoustic Cavity Resonance Energy Transmission Characteristics in Wheels Based on Power Flow Method

“…A pressure-tolerable microphone installed inside the cavity rotated with the tire and transmitted the measured sound pressure value to the signal acquisition and processing system through a wireless telemetry instrument. The specific experimental equipment device parameters are shown in Table 1, and the detailed test process can be referred to in [25]. The angular position of the sound pressure sensor was determined based on its time history data, obtained by the wheel angle sensor.…”