Project Name: Stil Veilig Wegverkeer
Start – End: April 2010 – Dec 2015
Apollo Vredestein B.V.Reef Infra B.V.Iris Vision MSI B.V.Provincie Gelderland.Regio TwenteEuropean Union (GO-program)
BackgroundAs a result of the increasing number of cars and trucks, tyre-road noise is an ever-increasing problem for people living close to roads. Despite the reduction of the noise emitted by tyres, the introduction of silent pavements and setting lower speed limits; health surveys still indicate an increasing number of people who suffer from tyre-road noise.
GoalsFrom measurements (Figure 1) it is known that the tread pattern and road roughness are the main origins of tyre-road noise The tyre vibrates due to these irregularities and noise is generated. In cooperation with the tyre industry, road manufacturers and road authorities, a sophisticated model is developed to construct silent tyre-road combinations. In addition, due to the new legislation, development of models to predict the acoustic performance of tyre-road combinations becomes more important to reduce development times. The models developed in this project can be used for this (so-called external noise) as well as for the noise perceived in the car (so-called internal noise). Figure 2 shows an example of the simulated noise and the measured noise of the real tyre.
PerspectivesThe research will lead to numerical models which will give insight into the mechanisms that are responsible for tyre-road noise. These models are quantitative and can be used to assess various strategies to reduce (external and internal) tyre-road noise from both tyre- and road point of view.
Figure 1 Tyre-Road noise measurement set-up
Figure 2 Tyre Pattern noise simulation and measurement.