Contact stresses in gear teeth due to tip relief profile modification

Abstract

In this paper the linear tip relief profile modification has been observed.This kind of modification has been considered to be potentially dangerous considering micro-pitting initiation as a consequence of contact pressure increase.The amount of tip relief profile modification depends on the elastic gear tooth deflection that needs to be compensated.The standard gear model without linear tip relief profile modification, as well as the modified one, has been discretized by finite elements and analyzed using the finite element method to compare Hertz contact stresses on tooth flank, as influenced by the mentioned profile modification.