Study of Local Fatigue Methods (TCD, N-SIF, and ESED) on Notches and Defects Related to Numerical Efficiency

The fatigue strength of structural components is strongly affected by notches and imperfections. Both can be treated similarly, as local notch methods also applied to interior defects. Even though Murakami’s √area approach commonly used in the threshold-based design single imperfections, advanced concepts such Theory Critical Distances (TCD), Notch Stress Intensity Factors (N-SIF), or Elastic Strain Energy Density (ESED) provide additional insight into distribution irregularly shaped defects under varying uniaxial load vectors. latter are based on evaluation elastic stress field vicinity for each vector. Thus, this work provides numerically efficient assess means TCD, N-SIF, ESED, targeting minimization required case count, optimization data points, utilization multi-processing. Furthermore, Peak Method (PSM) adapted large opening angles, globular In detail, two numerical strategies devised comprehensively evaluated, either using a sub-case-based defect with an unchanged mesh pattern vector exterior model region optimized angle stepping invocation strain tensor transformation equations derive angle-dependent result superposition while leaving initial unaltered. post-processing, evaluated retained key functions assessment, appropriate planar radius determination discretized presented. Although presented apply simulation studies, basic methodology easily expanded toward spatial assessment.