Modeling of Contact Length of Bias-ply Tire Based on Tire Dimensions, Inflation Pressure, Vertical Load and Rotational Speed

摘要

This study was conducted to model contact length (L) of bias-ply tire based on tire dimensions,~(TM)section width (b) and overall unloaded diameter (d), inflation pressure (P), vertical load (W) and rotational speed (N). For this reason, contact length of three bias-ply tires with different section width and overall unloaded diameter were measured at three levels of inflation pressure, four levels of vertical load and six levels ol rotational speed. In order to model contact length based on dimensions, inflation pressure and vertical load seven multiple-variable linear regression models were suggested and all the data were subjected to regresskn analysis. The statistical results of study indicated that the five-variable linear regression model L = 36.20-2.53! b + 0.719 d - 0.647 P + 0.185 W + 0.006 N with R~2 = 0.944 may be suggested to predict contact length of bias-ply tire based on section width, overall unloaded diameter, inflation pressure, vertical load and rotational speedftd a limited rangeof bias-ply tire sizes. However, experimental verification of this model is necessary before tbt model can be recommended for wider use.