Author(s)

V.A. Boguslayev, N.I. Obodan & P.P. Banas

Abstract

Optimum technology of creation of compressive residual stresses improving fatigue strength V.A. Boguslayev*, N.I. Obodan\ P.P. Banas* "Zaporozhye 'Motor Sich'Enterprise, 15 8th March St., Zaporozhye-64, Ukraine * Dnepropetrovsk State University, Dnepropetrovsk, Ukraine ABSTRACT The optimality condition is formulated for producing mechanical or thermal effect which ensures creation of the given minimum tensile and maximum compressive residual stresses with the aim to improve the fatigue strength and durability. The problem is solved by application of the finite elements method. The results of the optimization process are presented INTRODUCTION The positive effect produced by three-dimensional residual stresses, imparted in the machine elements in those zones where development of operational damage, nicks and macrotracks has the greatest probability, upon the fatigue strength is well known [1]. However, creation of such stresses by purposeful non-uniform plastic

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