Evaluation and attenuation of vibrations in the system road–vehicle–driver
| Project start: | 01.01.2013 |
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| Project end: | 31.12.2015 |
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| Programme: | VEGA |
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| Project number: | 2/0058/13 |
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| Institute position in the project: | The only one project investigator |
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| Project leader: | Peter Múčka |
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The relation between longitudinal road unevenness, unevenness indices and vehicle vibration response with consideration of tyre envelope in a wheel track were analysed. New classification of longitudinal road unevenness was proposed based on road elevation spectrum parameters. Classification addressed vibration and vehicle speed, tire envelopment and properties of real roads. Correlation between road unevenness indexes and vehicle vibration response and the relevance of indexes to predict ride comfort and safety was evaluated. The influence of local road distresses to various unevenness indexes and capacity of indicators to characterize random and impulse component of profile was estimated. The influence of different road-tire contact models on vibration response vehicle was compared. Model of coherence function of road elevation in parallel wheel tracks was identified based on processing of real profiles. The limits of IRI index compared with 18 current indexes and 14 innovative designs were estimated. New principle of magnetic vibration damping based on eddy currents was patented. Theory and experiments demonstrated better vibro-isolation properties of proposed damper.
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