Investigation and Evaluation of Rolling Resistance Prediction Models For Pneumatic Tlrs of Agricultural Vehicles

Wheel numeric and di fferent ver sions of mobility numbers are imp ortant models for predicting the roll ing resi stance. in this study, data rel ated to the rollin g resistance of cross ply and radial ply tires were compared with the resultant values from seve ral models. also , thepreciseness of model s in rolling resi stance prediction was evaluated. for this purpose f test and i-i line method (po: 0.05) were used . according to the results of the evaluation, cn and bn models overestimated the rollin g resi stan ce for both cro ss ply and radial ply tires, but the s lope of these models did not show any significant d ifference compared to i-i line s. result s indicated tha t these models had better prediction if an adjusting coe fficient could be applied . the emob model showed better results compared to cn and bn models for cross ply tire s, whereas it did not have acce ptable predi ctions for radi al tires. the n. f.a.e. , fmob and dwyer model s did notac t well for any tire type, even thou gh the best fit line of the dwyer model did not show any significant difference with the i-i line for cross ply tires .