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Integrated Fatigue Life Assessment Method for Welded Structures
Integrated Fatigue Life Assessment Method for Welded Structures
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机译:焊接结构疲劳寿命综合评估方法
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摘要
Due to the geometric discontinuities introduced by welding and joining processes, stresses or strains cannot be calculated stably using modern analysis and computer methods as a result of stress or strain specificity at joint locations, and severe mesh sensitivity. Results in The design and fatigue evaluation of these structures remains empirical. The present disclosure not only addresses mesh insensitivity of stress / strain calculations for welded structures through a cutting-face traction stress method through novel post-processing of conventional finite element calculation results, but also proportional or non-proportional multiaxial fatigue It provides an integrated fatigue evaluation procedure for fatigue design and structural life evaluation for both load-dependent low- and high-cycle fatigue regimes, and provides a simple and reliable method for handling spot welds.
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