Road surface and tyre interaction: noise and rolling ... › polopoly_fs › 1.849263.1550157619!...
13
Road surface and tyre interaction: noise and rolling resistance Tiago Vieira Workshop – Swedish Node in Nordic Research School for Pavement Engineering Stockholm, 24 th of September 2018
Transcript of Road surface and tyre interaction: noise and rolling ... › polopoly_fs › 1.849263.1550157619!...
Road surface and tyre interaction: noise and rolling resistance Tiago Vieira Workshop – Swedish Node in Nordic Research School for Pavement Engineering
Stockholm, 24th of September 2018
Why are noise and rolling resistance relevant?
• World Health Organization:
• Noise correlated to: • Ischaemic heart diseases • High blood pressure • Sleep disturbance • Cognitive impairment in children
(WHO, 2011)
Tiago Vieira
Image: mostphotos.se
Why are noise and rolling resistance relevant?
Tiago Vieira
Photo: Katja Kircher
• Rolling resistance • Fuel consumption • 11.5 % of the energy obtained from fuel is
dissipated in the tyre-road contact
Within the Swedish Context
Why are noise and rolling resistance relevant?
• 2018-2029: Noise reduction for 100 000
people resulting from pavement- and rail
related improvements
Tiago Vieira
A contact system: The pavement
Tiago Vieira
Image: Persson 2006
A contact system: Tyre
Tiago Vieira
Image: Gent, Walter, 2005
Image: Gent, Walter, 2005
Image: Gent, Walter, 2005
Tyre-road noise
• 16 different mechanisms • 9 generation mechanisms • 7 amplification mechanisms
Tiago Vieira
Tiago Vieira
Tyre/road Noise and Rolling Resistance measurement
Effect of winter tyres on noise and rolling resistance?
• SMA 8 • Proxy for reference surface ISO 10844 • Surface Texture: Mean Profile Depth (MPD): 0.78 mm • In service road near Gdańsk, Poland
Road Surface S1
• DAC 16 • Similar to SMA 16 • Surface Texture: Mean Profile Depth (MPD): 1.09 mm • In service road near Gdańsk, Poland
Road Surface S2
Tiago Vieira
• Noise Spectra:
Effect of winter tyres on noise and rolling resistance?
• Studded tyres differ from other categories specially at higher frequencies (> 4 kHz)
• Studded tyres have higher third-octave band levels all over the frequency range
Tiago Vieira
Texture optimization: Surface grinding
Tiago Vieira
• Lack of holistic view • PM-emissions • Road Noise • Rolling Resistance • Friction
• E.g.: • Porous surfaces clog due to abrasion wear (road dust)
compromising its noise reduction ability • Reducing maximum aggregate size reduces rolling resistance while
increasing abrasion wear, thus impacting particle emissions
Current problem
Tiago Vieira
Thank you for your attention!
Tiago Vieira [email protected]
Supervision: Prof. Sigurdur Erlingsson (VTI/KTH/University of Iceland)
Dr. Ulf Sandberg (VTI) Dr. Anders Genell (VTI)
Sponsorship:
