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Shape of a spectral excitation matrix for a linear road/tyre interaction numerical analysis

Shape of a spectral excitation matrix for a linear road/tyre interaction numerical analysis
Shape of a spectral excitation matrix for a linear road/tyre interaction numerical analysis
Tyre/road interaction is recognized as the main source of interior and exterior noise for velocities over 40 km/h. The authors have proposed a linear stochastic approach to predict the tyre vibrations due to the road/tyre interaction. A mechanical model of the tyre is connected to the road through a Winkler contact model with all the springs in the contact patch assumed to be in contact with the road at all the time. Such a linear model is strictly valid for smooth road and soft tyres. In this paper the authors investigate the range of validity of the linearity assumption and they also propose a modified shape of the excitation matrix that takes into account the contact non-linearity. The investigation is based on a numerical non-linear model of a 2D tyre. The model consists of a rigid curved body that touches the road through a Winkler model, in which the number of the springs in contact and their actual compression has been found through a quasistatic equilibrium analysis.
Rustighi, E.
9544ced4-5057-4491-a45c-643873dfed96
Elliott, S.J.
721dc55c-8c3e-4895-b9c4-82f62abd3567
Rustighi, E.
9544ced4-5057-4491-a45c-643873dfed96
Elliott, S.J.
721dc55c-8c3e-4895-b9c4-82f62abd3567

Rustighi, E. and Elliott, S.J. (2007) Shape of a spectral excitation matrix for a linear road/tyre interaction numerical analysis. Inter noise 2007: The 36th International Congress and Exhibition on Noise Control Engineering, Istanbul, Turkey. 27 - 30 Aug 2007. 10 pp .

Record type: Conference or Workshop Item (Paper)

Abstract

Tyre/road interaction is recognized as the main source of interior and exterior noise for velocities over 40 km/h. The authors have proposed a linear stochastic approach to predict the tyre vibrations due to the road/tyre interaction. A mechanical model of the tyre is connected to the road through a Winkler contact model with all the springs in the contact patch assumed to be in contact with the road at all the time. Such a linear model is strictly valid for smooth road and soft tyres. In this paper the authors investigate the range of validity of the linearity assumption and they also propose a modified shape of the excitation matrix that takes into account the contact non-linearity. The investigation is based on a numerical non-linear model of a 2D tyre. The model consists of a rigid curved body that touches the road through a Winkler model, in which the number of the springs in contact and their actual compression has been found through a quasistatic equilibrium analysis.

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More information

Published date: 2007
Additional Information: Paper 311
Venue - Dates: Inter noise 2007: The 36th International Congress and Exhibition on Noise Control Engineering, Istanbul, Turkey, 2007-08-27 - 2007-08-30

Identifiers

Local EPrints ID: 49438
URI: http://eprints.soton.ac.uk/id/eprint/49438
PURE UUID: 76b3f714-363e-4c92-9045-1be598724cf3
ORCID for E. Rustighi: ORCID iD orcid.org/0000-0001-9871-7795

Catalogue record

Date deposited: 13 Nov 2007
Last modified: 09 Jan 2022 03:17

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