Dynamic Spring Rate Performance of Rolling Tires

Technical Note: Rolling dynamic stiffness and damping characteristics of small-sized pneumatic tyres

“…Figures 2a to d show that the rolling dynamic stiness is directly proportional to the in¯ation pressure, but that the damping coecient is inversely proportional, as expected. A similar variation was reported by Rasmussen and Cortese [2]. Also, for the same size tyre, a higher ply rating (PR) results in higher values of the rolling dynamic stiness and damping coecient, as can be seen from Figs 2a and b.…”

“…Chiesa [1] reported that, owing to their lower dynamic stiness, radial tyres give a favourable performance in the middle-frequency range as compared with the highfrequency range. Rasmussen and Cortese [2] developed a technique for precise measurement of spring rate in the laboratory and measured the spring rate of dierent tyres. Barone [3] conducted rolling drum cleat impact tests on a radial tyre to study high-frequency (20± 100 Hz) tyre vibrations in the horizontal and vertical plane.…”