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Influence of material on inelastic behaviour and local buckling of SHS Members under cyclic loading
Author(s) -
Nagai Tomoaki,
Ochi Kenshi
Publication year - 2019
Publication title -
ce/papers
Language(s) - English
Resource type - Journals
ISSN - 2509-7075
DOI - 10.1002/cepa.1090
Subject(s) - materials science , structural engineering , buckling , bending , finite element method , hardening (computing) , softening , square (algebra) , yield (engineering) , strain hardening exponent , composite material , deformation (meteorology) , engineering , mathematics , geometry , layer (electronics)
Previous studies on the influence of different manufacturing process on mechanical properties of cold‐formed, hot‐rolled and cold‐formed with subsequent heat treatment square hollow sections have proposed the FEM analysis with the Chaboche model for cyclic behaviour of Square Hollow Sections. Previous test and numerical results showing the ultimate behaviours with local buckling and hardening/softening under cyclic bending can be simulated with accuracy. In order to investigate the relations of fracture and maximum bending stress at the corner of the sections, these previous studies used the model of the section with 45 degrees around the member axis. This paper presents the results of the FE analysis with standard axis of the Square Hollow Sections. FE analyses were carried out to examine the effects of the material properties and diameter to thickness ratio on the load‐deformation curves. Based on the cyclic loading protocol as experimental procedures, numerical results are compared with loading history each other. The section with high yield ratio steel shows the higher bending strength than low at lower magnitude loading cycles. The behaviours at the maximum magnitude cycles get closer for all material sections. The required rotation capacity for classification with seismic design is compared with the results of FEA for the SHS members.