Study of Crossbar Tyres in Rolling Conditions

Other conference contribution, 2004

A correct description of the contact between a tyre and a road is a crucial step towards the understanding and the prediction of tyre/road noise using deterministic models. The present work is about the study of crossbar tyres of the passenger car type in rolling conditions. Measurements were made on a crossbar tyre loaded on a rotating drum and acceleration signals were recorded on the tyre structure for both the tangential and normal directions. The measurement situation was also modelled using a deterministic three-dimensional contact model. Comparisons between measurements and calculations show satisfactory results when it comes to pitching frequencies and global shapes of the acceleration signals. Another result is that it can be seen that moment excitation of the tyre structure by each block hitting the road at the leading edge can be an important generation mechanism to include in models.