Noise effects of combinations of tyres and roads Gijsjan van - - PowerPoint PPT Presentation

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noise effects of combinations of tyres and roads

Noise effects of combinations of tyres and roads Gijsjan van - - PowerPoint PPT Presentation

Dec 02, 2023 173 likes •269 views

Noise effects of combinations of tyres and roads Gijsjan van Blokland Normal car tyres on smooth and rough 0/8 mm surface noise effect of

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Noise effects of combinations of tyres and

roads

Gijsjan van Blokland

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noise effect of tyre/road combi's

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Normal car tyres on smooth and rough 0/8 mm surface

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noise effect of tyre/road combi's

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Normal car tyres on open and dense 0/8 mm surface

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noise effect of tyre/road combi's

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Normal car tyres on open and on absorbing 0/8 mm surface

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noise effect of tyre/road combi's

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Normal tyres on rigid and flexible layer

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noise effect of tyre/road combi's

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All surface types

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noise effect of tyre/road combi's

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Normal tyres on smooth surfaces

40 50 60 70 80 L a f m a x L a f m a x 1 2 5 1 6 2 2 5 3 1 5 4 5 6 3 8 1 1 2 5 1 6 2 2 5 3 1 5 4 5 Frequency [Hz] LpAF [dB] "1 mm surface dressing "0,5 mm surface dressing "polished concrete "'epoxy smoothened surface

v = 80 km/h

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noise effect of tyre/road combi's

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Smooth on rough surface vs. rough tyre on smooth surface

40 45 50 55 60 65 70 75 80

Lafmax Lafmax 125 160 200 250 315 400 500 630 800 1000 1250 1600 2000 2500 3150 4000 5000

fT [Hz]

LpAF [dB] normale reifen auf glatte decke (Planschliff) glatte reifen auf normale belag (ob 2/3) v = 80 km/h

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noise effect of tyre/road combi's

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Smooth/normal tyre on smooth/rough road

40 45 50 55 60 65 70 75 80 Lafmax Lafmax 125 160 200 250 315 400 500 630 800 1000 1250 1600 2000 2500 3150 4000 5000 Frequency [Hz] LAmax [dB]

normal tyre on coarse surface normal tyres on smooth surface slick tyre on coarse surface slick tyre on smooth surface