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Abstract The effect of residual stress in the fatigue analysis of a formed products must be considered with great care. The relaxation of residual stress under a cyclic load is… Click to show full abstract
Abstract The effect of residual stress in the fatigue analysis of a formed products must be considered with great care. The relaxation of residual stress under a cyclic load is a transient phenomenon that is described in this paper using classic plasticity theory by employing a combined, non-linear, kinematic and isotropic hardening material model. Results were compared with experimental observations by means of contour method and digital-image-correlation method on specimens made of S235JR steel, with focus on near surface state. This research showed reasonable prediction of initial residual stress state and an over-prediction of strain ratcheting as cyclic load progresses.
Journal Title: International Journal of Fatigue
Year Published: 2021
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