Numerical Evaluation of Fatigue Crack Growth of Structural Steels Using Energy Release Rate with VCCT

This research presents the numerical evaluation of fatigue crack growth structural steels S355 and S960 based on Paris’ law parameters (C m) that are experimentally determined with a single edge notched tension (SENT) specimen using optical gauge measurements an electromotive resonance machine at constant amplitude load. The sustainable technique is replacing destructive, time-consuming expensive approaches in integrity. propagation modelled 3D finite element method (FEM) adaptive remeshing tetrahedral elements along initiator provided simulation software for linear elastic fracture mechanics (LEFM). stress intensity computed energy release rates according to Irwin’s closure integral applied cyclic load 62.5 MPa, 100 MPa 150 ratios R = 0 0.1. In order achieve optimized mesh size towards cycle computational time, re-mesh sensitivity analysis conducted. results indicate virtual VCCT-based FEM shows acceptable agreement compared experimental investigation percentage error up 7.9% 12.8% steel.