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김선주(S.J.Kim),Arvin R.Savkoor(A.R.Savkoor) 한국자동차공학회 1997 한국자동차공학회 춘 추계 학술대회 논문집 Vol.1997 No.6_2
The paper describes an analysis of contact problem of free-rolling of pneumatic tires on a flat road. The tire is modeled as an elastic ring supported on a viscoelastic foundation. Additional elastic spring elements on the outer surface of the ring are included to model the compliance of the tread rubber. The contact problem of a free-rolling tire is formulated tor prescribed normal deflection and subjected to constraints of both normal contact and friction. The equations of motion for the ring displacements are expressed in terms of modal expansion and non-linear boundary conditions of rolling contact are solved numerically to determine the region of contact, the distribution of normal and shear tractions and the effective rolling radius of the free-rolling tire. The contributions of tire hysteresis and frictional sliding in the contact region to the rolling resistance are determined. The influence of linear viscous damping and Coriolis acceleration at higher rolling speeds on the asymmetric distribution of normal and tangential traction in the contact patch is considered.<br/>