Using principles of residual stress mechanics in forecasting endurance limits of cylindrical parts

摘要

Mathematical model of forming residual stresses in surface layer of parts is offered, based on decision of a plasticity theory problem, taking into account the anomalous mechanical characteristics of a surface layer and peculiarities of cyclicalloading of parts with amplitude, corresponding to the endurance limits of the material. Basic results of calculations of residual stresses in a surface layer of parts are developed; basic regularities of dynamics of rise and distribution of residualstresses are described. The possibility of forecasting of endurance limits of parts on the base of a developed model is substantiated; theoretical results of prognosis with experimental confirmation are presented.