Mechanical Behavior of Q460 High-Strength Steel under Low-Cycle Fatigue Loading

To investigate the mechanical properties of Q460 high-strength steel under repeat tensile loading, 45 specimens were prepared for repeated tests. The are tested 16 different loading regimes. effects welded joints, specimen shape and dimensions, modes on analyzed. In addition, a finite element model cyclic load was established with ANSYS numerical results compared those experimental This can accurately simulate deformation characteristics specimens. Experimental studies have found that joints adverse this material. cumulative effect fatigue damage significant, ductility poor loading. mode had major impact material As number cycles increased, more evident, length, size, cross-sectional zone all affected stiffness specimen. Finally, based research analysis results, design formula strength proposed. serve as reference application in seismic engineering.