Study of tire radiation noise focusing on structural vibration and tread pattern

Tires are the only parts in contact with the road surface and have four major functions: supporting the weight of the vehicle, transmitting driving and braking forces, changing and maintaining the direction of travel, and mitigating road impacts. Furthermore, from the viewpoint of a sustainable society, there is a need to reduce rolling resistance and weight. In addition, the noise generated by the interaction between the tire and the road is becoming one of the main causes of traffic noise, so reducing both rolling resistance and tire noise is an important issue. This paper introduces a study of the causes of tire road noise and efforts to reduce that. One is study the vibration radiation sound that contradict low rolling resistance. Moreover, a study of reducing noise caused by tread pattern, and a study of a method to reduce acoustic resonance generated in the space between the grooves and the road surface using a resonator are described.