Damage assessment of steel angle members subjected to very-low-cycle loading

This Study deals with damage processes to steel Structural members up to an ultimate cracking state caused by local buckling that Occurs under large deformations due to very-low-cycle loading. In this Study, a very-low-cycle I g, cycles, within the large plastic range. Experiments were conloading means a repetitive loading, with 5 to 20 loading ducted on steel angle members that were subjected to very-low-cycle loading that Caused global and (or) local buckling and plastic elongation. The objective of the experiments was to quantify important physical factor relationships between cracks and ruptures to large repetitive deformations. A nonlinear finite element method analysis was performed to trace the experimental behavior of steel Structural members. A new approach to seismic damage assessment for steel members is proposed based on local stress-strain histories and cumulative states of deformation at critical parts.