Abstract
This paper presents a simulative method which takes into consideration the influence of a surface layer on the stresses observed during low-cycle fatigue regions of tension and torsion and after loadings. The cyclic loading model is described for an axial-symmetric cylinder with a surface layer. The layer is divided into several zones (shells), which enable the introduction of material property changes and residual stresses as a function of the distance from the surface. This work also introduces a comparison of the evolution of residual stresses counted and measured experimentally with shot peened samples after cyclic tension and torsion. The experimental results agree well with the simulation.
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