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- W2952298612 abstract "Abstract Near threshold fatigue crack response is extremely sensitive to load history. It is associated with the influence of near-tip stress on instantaneous resistance of crack tip surface layers to failure under atmospheric conditions. The paper deals with computational aspects of stress and strain distributions at the crack tip. A new approach is proposed to obtain near-tip stress under variable amplitude loading. The method considers a combination of standard rules for determining local strains (Linear rule, Neuber rule, ESED method, etc.) and well-known in Finite Element Analysis (FEA) return mapping algorithm in context of nonlinear mixed hardening material model. Iterative procedure based on Newton-Raphson method is proposed to calculate plastic variables and near-tip stress at each load step. The calculated results obtained by new model are validated with the traditional approach in case of Al2024-T3 alloy for constant amplitude loading after tensile/comprehensive overloads." @default.
- W2952298612 created "2019-06-27" @default.
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- W2952298612 date "2019-01-01" @default.
- W2952298612 modified "2023-09-29" @default.
- W2952298612 title "A new semi-analytical approach for obtaining crack-tip stress distributions under variable-amplitude loading" @default.
- W2952298612 cites W1966909074 @default.
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- W2952298612 doi "https://doi.org/10.1016/j.prostr.2019.05.085" @default.
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