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- W4309724206 abstract "The weight function (WF) has unique advantages when calculating the stress intensity factor (SIF) and evaluating the fatigue performance of cracked components. However, exiting WFs are common for simple geometries, but cannot accurately calculate the SIFs for surface cracks in U-rib-to-deck joints. Here, WFs are derived for semi-elliptical surface cracks in U-rib-to-deck joints. Firstly, the finite element method (FEM) is used to calculate the SIF for semi-elliptical surface cracks at weld toes in U-rib-to-deck joints. The effect of different crack configurations, such as the weld angle (θ), aspect ratio (a/c), crack depth ratio (a/T), and deck-to-rib thickness ratio (T/t), on SIFs is discussed. Then new WFs are developed and validated based on different stress distributions, and the effects of different crack geometric characteristics are considered. Finally, using the derived WFs, the SIFs for surface crack in a U-rib-to-deck joint are calculated accounting for the welding residual stresses. Comparisons were made with predictions from the existing WFs for T-plate joints, and the FEM. The proposed WFs comprehensively account for the effects of the crack geometry characteristics of U-rib-to-deck joints and accurately calculate the SIFs for surface cracks at weld toes." @default.
- W4309724206 created "2022-11-29" @default.
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- W4309724206 date "2023-02-01" @default.
- W4309724206 modified "2023-10-17" @default.
- W4309724206 title "Stress intensity factors and weight functions for semi-elliptical cracks at weld toes in U-rib-to-deck joints" @default.
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- W4309724206 doi "https://doi.org/10.1016/j.tafmec.2022.103697" @default.
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