Influence of Fiber-Reinforced Composite Wheel Resonance on tire cavity noise
Tuesday 2 june, 2015, 09:40 - 10:00
0.2 Berlin (90)
Tire cavity noise is a kind of tonal noise with a frequency spectrum close to 220Hz, and it can be heard clearly inside the vehicle compartment, which is a phenomenon generated by resonance of the acoustic cavity inside the tire-wheel assembly due to the excitation of tire/road. There are lots of factors related to tire cavity noise, such as the dimension and structure of the tire and the wheel etc. As the critical component of transmitting the pressure of tire cavity resonance, the wheel has a very important influence on tire cavity noise by the coupling with cavity resonance. This study just focuses on the effects of fiber-reinforced composite wheel resonance on the tire cavity noise. A simple analytical model is proposed to interpret the coupling mechanism between tire cavity noise and the structural vibration of fiber-reinforced composite wheel taking into account the characteristic of composite materials, and a numerical simulation is conducted to validate the model. In addition, effects of both fiber-reinforced composite wheel and metal wheel on tire cavity noise are investigated, and the results show that the wheel made of fiber-reinforced composites contributes less to the cavity noise than that of the metal wheel.
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