NUMERICAL AND EXPERIMENTAL RESEARCH OF FINITE LENGTH LINE CONTACTS

Dorin GRADINARU

gradinaru@fim.usv.ro

Marilena GLOVNEA

mlg@fim.usv.ro

 Sergiu SPINU

sergiu.spinu@fim.usv.ro

Department of Mechanical Engineering, University of Suceava, ROMANIA

Abstract. Pressure distribution in elastic finite length line contacts is solved using both classic inversion of influence coefficient matrix and CG-DCFFT algorithm. Contact geometry is generated using partial crowning and profiling of roller generatrix by three and five circle arcs. Numerical predictions of pressure distributions for profiled rollers are compared with results published by Hartnett and J. de Mul. Another validation is performed against experimental data obtained by using laser profilometry. Numerical and experimental lateral extensions of contact area at axial ends agree well, as long as the load remains in the elastic domain.

Keywords: finite length line contact, numerical simulations, profiling, laser profilometry