Modeling of Radial-Ply Tire Rolling Resistance Based on Tire Dimensions, Inflation Pressure and Vertical Load

摘要

This study was conducted to model rolling resistance (R) of radial-ply tire based on tire dimensions, viz., section width (b) and/or overall unloaded diameter (d), inflation pressure (P) and vertical load (W). For this purpose, rolling resistance of three radial-ply tires with different section width and/or overall unloaded diameter were measured at three levels of inflation pressure and four levels of vertical load. In order to model rolling resistance based on dimensions, inflation pressure and vertical load, seven multiple-variable regression models were suggested and all the data were subjected to regression analysis. The statistical results of study revealed that the multiple-variable regression model R = - 0.17827 + 0.00465 d - 0.00168 P + 0.03161 W with R2 = 0.976 may be suggested to predict rolling resistance of radial-ply tire based on overall unloaded diameter, inflation pressure and vertical load for a limited range of tire sizes. However, experimental verification of this model is necessary before the model can be recommended for wider use.