Modal testing and finite element modelling of a reduced-sized tyre for rolling contact investigation
Regular paper
IFSTTAR, AME, LAE, LUNAM Université
Tuesday 2 june, 2015, 08:40 - 09:00
0.2 Berlin (90)
Abstract:
<latex></latex>One of the main contributors to the generation of tyre/road
noise is the
vibrational mechanism. The understanding of the latter requires both numerical
modelling of the tyre/road contact problem under rolling conditions and
experimental validation. The use of a go-kart tyre presents advantages in
comparison with a standard tyre due to its simpler structure for modelling and
its reduced size that facilitates experimental studies in laboratory. Modal
testing has first been performed on such a tyre for different inflation
pressures to extract modal parameters (frequencies and damping ratios). The
modal frequencies are stated to rise accordingly with the inflation pressure.
Then a finite element (FE) vibrational tyre model has been built and adjusted
to reproduce similar vibrational characteristics as those obtained from
measurements for each tyre inflation pressure investigated. Once validated,
the FE model is to be used to simulate the dynamic behaviour of a tyre rolling
over a single road asperity for further investigation of the dynamic tyre/road
contact problem.