Three-dimensional global pattern prediction for tyre tread wear

Abstract

A theoretical tyre model was developed analytically using the proposed middle plane for predicting the three-dimensional global tyre wear qualitatively and quantitatively as a function of the road roughness and the dynamic characteristics of the vehicle. Diagrams of the tyre wear pattern across the tyre width and along the tyre circumference were drawn for different road roughnesses, camber angles and vehicle dynamic characteristics. The numerical results show how the three-dimensional tyre wear pattern varied when these factors changed. Numerical calculations also reveal that a unique wear pattern may be caused by the system’s inherent dynamic features, e.g. the modal shape. In addition, a sensitivity analysis shows that the slip ratio, the longitudinal stiffness, the tyre width, the velocity and the vertical force have the greatest effects on the frictional dissipation energy, in that order. With the established wear model, good tyre wear distribution predictions can be given qualitatively and quantitatively for the rolling surface of the tyre. Moreover, guidelines for obtaining less tyre wear are provided for tyre and car manufacturers.

The influence of the contact features on the tyre wear in steady-state conditions

“…Of these components, the normal contact pressure distribution is one of the most important components of the contact features and is often used in many studies for analysis of the mechanical behaviours of tyres. 15, 20, 27 Obviously, the tyre–ground contact features are complex and difficult to characterize numerically. However, it is possible to characterize the normal contact pressure distribution to represent some key variables.…”

“…It is worth mentioning that the brush stiffnesses obtained from the experiment were the global stiffnesses in the contact region, and the stiffness per unit length must be considered. The wear coefficients and the frictional coefficients were obtained from the work of Huang et al 27…”

“…This modified wear model, which is based on the tyre brush model described by Ga¨fvert and Svendenius, 30 has been presented in detail by two of the present authors and their co-workers. 27 Besides the modified contact and wear model, it is worth mentioning that these researchers also technically did much to combine the two models, in particular in carrying out the transformation of the coordinate system of the two models. To demonstrate this combination of the two models, the flow chart of the modelling process is illustrated in Figure 1.…”

“…As an extension of our previous work, 26,27 the aim of this paper is to investigate the relationship between the contact features of the tyre and the tyre wear as functions of the tyre structure and the manoeuvre parameters in a quantitative sense. The study is carried out with a combined theoretical wear model of the tyre; this includes a modified tyre contact model based on a ring model, which provides quantitative descriptions of the contact pressure distribution more exactly, and a physical tyre modified model based on a brush model, which enables us to compute the amount of tyre wear by utilizing the frictional dissipation energy.…”

Numerical and experimental investigation on the camber performance of a non-pneumatic mechanical elastic wheel

“…Guan et al [9] studied the contact pressure distribution and the shape of contact area in different camber angles under the static condition by FEA and tests. Huang et al [10] developed a theoretical tire model and predicted the tire wear pattern for different camber angles and road roughness.…”