The authors study the damage process to steel structural members after buckling, subjecting them to large repetitive deformations such as strong earthquake loading up to the ultimate cracking state. Experiments were performed on steel angle members that were subjected to very low cycle loading that caused global and/or local buckling and plastic elongation. In this study, very low cycle loading refers to repetitive loading of 5 to 20 loading cycles within a large plastic range. The aim of the experiments was to quantify the relationships of the important physical factors relating cracks and ruptures to large repetitive deformations. In addition, a nonlinear finite-element-method (FEM) analysis was initiated to trace the experimental behavior of the steel structural members. Results from the experimental and analytical studies are discussed in detail with emphasis on the crack initiation process at the local buckling location. The authors conclude that FEM analysis effectively clarifies the detailed behavior of the steel members that cannot be seen in experiments, especially the behavior of local stress-strain histories at their cracking parts.


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  • Accession Number: 00716528
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Feb 25 1996 12:00AM