A study of horizontal and vertical forces generated by rolling tires
Abstract
Three mathematical models of tire nonuniformity are investigated. The first model treats the effect of mass unbalance and geometric nonuniformity (run-out). The second models the effect of radial stiffness nonuniformity. The third is an extension of the second, and includes the effects of torsional interaction between the wheel hub and tread band. A fourth mathematical model investigates the phenomenon of steady state rolling resistance. The first model demonstrates that the so-called dynamic fore-and-aft horizontal forces can be explained in terms of mass and geometric nonuniformities. The second and third models demonstrate the manner in which radial stiffness nonuniformity could contribute to the fore-and-aft forces. The rolling resistance model demonstrates the roles of internal damping and contact patch asymmetry in increasing rolling resistance.
Degree
Ph.D.
Advisors
Soedel, Purdue University.
Subject Area
Mechanical engineering|Automotive materials
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