PRESSURE DISTRIBUTION AND STRESS STATE IN A ROLLING CIRCULAR CONTACT WITH A TRANSVERSAL FURROW

Delia-Aurora CERLINCA

delia@fim.usv.ro

 Emanuel DIACONESCU

emdi@fim.usv.ro

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