Abstract
In this work, to analyse the changing characteristics of contact stresses in the tyre–pavement interface and the functional relationship between rolling resistance and the working conditions of truck-bus tyres, a three-dimensional tyre–pavement model is established and used to predict the distribution of contact stresses and rolling resistance under different working conditions of the tyre, comprising various tyre loads, inflation pressures, and velocities. Results show that the magnitude relationship between transverse and longitudinal contact stresses is related to rolling conditions, and overload and low tyre pressure are important contributors to the wear of the tyre shoulder. In addition, the proposed exponential equation presents a method that can be used to forecast rolling resistance related to the working conditions of the truck-bus tyre, and a similar method can be used to predict the rolling resistances of other types of tyres.
Highlights
Different simulation studies [1,2] and experimental results [3,4] have shown that contact stresses between tyre and pavement have a great influence on vehicle handling and stability and significantly affect the prediction of pavement responses and performance [5,6,7,8,9]
This study primarily develops a theoretical methodology the conditions and explores the change rule of tri-axial contact stresses and the functional relationship prediction of the contact stresses and rolling resistance (RR) of the truck-bus radial tyre (275/70R22.5) under rolling between RR
Because the braking and acceleration forces are similar, this study focuses on comparing the change characteristics of the contact stresses and contact area with basic working conditions under free-rolling and full-braking conditions
Summary
Different simulation studies [1,2] and experimental results [3,4] have shown that contact stresses between tyre and pavement have a great influence on vehicle handling and stability and significantly affect the prediction of pavement responses and performance [5,6,7,8,9]. Many factors affect the accuracy and reliability of the direction, and arrangement), tyre aspects (the aspects type, structure, materials, working conditions, and rolling experimental test results, including sensor (the number, direction, and arrangement), tyre state), and the road aspect. This study primarily develops a theoretical methodology the conditions and explores the change rule of tri-axial contact stresses and the functional relationship prediction of the contact stresses and RR of the truck-bus radial tyre (275/70R22.5) under rolling between RR and tyre working conditions. 2D tyre models can solve many problems in tyre mechanics and have some successful applications, these simplified models are not suitable for the prediction and calculation of the contact stresses between the tyre and pavement They cannot be used to analyse the complex composition of each part of the tyre in detail or the nonlinear characteristics of tyre materials [22]. A complete 3D tyre model that considers the actual dimensions and nonlinear characteristics of the tyre is established with the assistance of ABAQUS software
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