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• W2973161616 endingPage "104187" @default.
• W2973161616 startingPage "104187" @default.
• W2973161616 abstract "For local stress-strain behavior modeling at the notch root, both the Neuber's rule and equivalent strain energy density (ESED) method are commonly utilized in engineering practice, in which the former overestimates notch elasto-plastic responses while the latter gives conservative predictions. In this work, a correction coefficient related to the effective Poisson's ratio veff is proposed to quantify the weight of dissipated heat energy term with the modified ESED model. Notch-root strains predicted by the proposed model are compared with nonlinear FE calculations of GH4169 and TC4 V-shaped notched-bars, in which the proposed solution provides good agreement with FE results for both cases. Then, consulting the idea of local stress-strain approaches, a fatigue lifing model is derived assuming that the notched specimens fail once reach the critical total strain energy as same as that of smooth ones. Results indicated that prediction accuracy of local equivalent strains at notch roots is improved, and yields better life predictions than the Ellyin's model for the two alloys." @default.
• W2973161616 created "2019-09-19" @default.
• W2973161616 creator A5011201862 @default.
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• W2973161616 date "2019-12-01" @default.
• W2973161616 modified "2023-10-17" @default.
• W2973161616 title "Stress-strain calculation and fatigue life assessment of V-shaped notches of turbine disk alloys" @default.
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• W2973161616 doi "https://doi.org/10.1016/j.engfailanal.2019.104187" @default.
• W2973161616 hasPublicationYear "2019" @default.
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