PRESSURE DISTRIBUTION AND STRESS STATE IN A ROLLING CIRCULAR CONTACT WITH A TRANSVERSAL FURROW
Department of Mechanical Engineering, University of Suceava, ROMANIA
Abstract. Surface furrows act as severe pressure risers on contact area. To assess these effects, pressure distribution and state stress in a rolling circular contact affected by a transverse furrow is derived in this paper for different defect positions with respect to central contact point. A proprietary program based on matrix inversion method, developed under Mathcad is used to this end. The pressure matrix, previously found, is used in superposition principle for the half-space to find the stresses as double integrals over contact area. These are solved numerically under Mathcad. At small eccentricities, all stresses possess two maxima along rolling direction, whereas a single maximum occurs at high eccentricities.
Keywords: rolling contact, transversal furrow, pressure distribution, numerical analysis, stress state