Some of the most important factors that influences Tire Wear is the Tire Force Profile, Pavement abrasiveness and Tire Running Temperature. Out of the three, the most important is the Tire Force, specifically Tire Lateral Force. It is possible for us to measure the lateral g-forces acting on the tire while driving and process the values under a single-valued number called Driving Severity Number (DSN). DSN is expressing the relationship between tire lateral forces variation and tire wear. We have tested different tires on same track, same tire running temperature, very comparable speeds and comparable driving manner. We altered steering direction alignment specifications on the vehicles to induce irregular wear for additional study. Generally we see a direct relationship between vehicle speed, DSN and tire average wear even when the tires didn't actually wear up in the same pattern. However, on very similar driving conditions we did notice some differences in DSN and tire wear and we think this can be explained mainly by differences in tire construction. Therefore we can conclude that we can use DSN to identify differences in tire construction as well. We can conclude that DSN will not relate wear to individual tire forces due to load transfer or vehicle roll, suspension caracteristics or alignment alterations. But if we consider the tires and vehicle as a system and we assume that there are no alterations to the alignment angles and all other caracteristics are equal, we can use DSN to predict tire wear as a correlation between the accelerations in the three dimensions.
Correlations between lateral forces variation and tire wear
2012
32 Seiten, 13 Bilder, 6 Tabellen, 11 Quellen
Conference paper
English
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