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Abstract

The vertical, longitudinal and lateral dynamic behaviour of road vehicles is largely influenced by the dynamic characteristics of tyres. The tyre characteristics have been modelled by researchers as functions of the tyre elastic properties which are characterized by tyre vertical, lateral, longitudinal and torsional stiffnesses. Design details of an experimental rig for measurement of tyre static stiffnesses are presented, and experimental data on these stiffness values in the form of a power law as functions of tyre size, ply rating, normal load and inflation pressure are reported. Using tyre models, the tyre force and moment characteristics necessary for vertical dynamic simulation can be predicted.

Keywords

tyre static stiffness vertical stiffness lateral stiffness longitudinal stiffness torsional stiffness

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Stiffness properties of small-sized pneumatic tyres

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