This paper deals with the elastoplastic analysis and ductility evaluation of steel tubularcolumns subjected to cyclic loading. The basic characteristics of steel tubular columnsare noted. The results of finite element analyses on cyclic elastoplastic behavior of steeltubular columns are presented. For comparison purposes, in the analysis three materialmodels; kinematic hardening, isotropic hardening, and elastic perfectly plastic models areemployed for material nonlinearity to trace the inelastic cyclic behavior of steel. Amethod for evaluating ductility capacity of tubular columns is presented. The applicationof the method is demonstrated by comparing the computed strength and ductility of somecantilever columns with the test results.
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