IMPROVEMENT OF PRESSURE DISTRIBUTION IN ELASTIC NON-HERTZIAN CONTACTS – NUMERICAL SIMULATIONS

Sergiu SPINU

sergiu.spinu@fim.usv.ro

Dorin GRADINARU

gradinaru@fim.usv.ro

Marius MARCHITAN

Department of Mechanical Engineering, University of Suceava, Romania

Abstract. A fast and accurate algorithm, based on the discrete convolution fast Fourier transform theorem, was proposed. Pressure distribution and stress state for various concentrated and conforming contacts were analyzed. For conical indenter with rounded tip and flat-ended punch with radiused corner, numerical investigations were validated by analytical results. For advanced geometries of square pyramid as well as of square and regular hexagonal flat-ended punch the effect of varying the rounding radius upon pressure distribution and stress stare was analyzed.

Keywords: pressure distribution, fast Fourier transform, numerical simulations, rounding