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Optimizing the noise performance of a low-noise vehicle wheel

Krister Larsson (Institutionen för teknisk akustik, Vibroakustik) ; Jörg Schade
InterNoise 2004, August 22-25, 2004, Prague, Czech Republic (2004)
[Konferensbidrag, refereegranskat]

The reduction of noise generated by the tire/road interaction is essential for reducing the environmental noise in the modern society. So far, only relatively small achievements have been made to make quieter tires of traditional design. For a substantial reduction of the tire/road noise (more than 10 dB), new concepts of wheel design have to be investigated, modeled and tested. One example of a relatively new wheel concept is the so-called composite wheel, invented by the Swedish inventor Hans-Eric Hansson in the late 1980th. The wheel consists of a circular belt made of glass fiber- or carbon fiber reinforced plastic, supported by a rim with carbon fiber spokes. Since no pressurized air is used inside the wheel, there is a greater freedom to design the belt with ventilation holes that reduce both the sound radiation from the vibrations, as well as the amplification by the horn effect. In this paper, a model is developed for the sound radiation of the composite wheel, which is used in conjunction with a vibrational model of the wheel to predict the sound generation of it. Additionally, the horn effect is studied and compared to measurements. Further, a parameter study is performed using the model. The results shows that the design of the ventilation holes in the belt strongly influence the noise behavior of the wheel.



Denna post skapades 2006-09-28.
CPL Pubid: 1534

 

Institutioner (Chalmers)

Institutionen för teknisk akustik, Vibroakustik (1900-2004)

Ämnesområden

Teknisk mekanik

Chalmers infrastruktur