A numerical procedure including the incremental strain-controlled strategy proposed by the authors is presented here for analyzing the equilibrium path of elastic-plastic frame. Some numerical examples demonstrate that this strategy is an effective means to generate consistent stiffness matrix. The programming code for the incremental strain-controlled strategy can be easily produced from those for the well-known load-controlled scheme and/or displacement-controlled scheme.The incremental strain-controlled strategy can be conducted independently of the setting of system coordinates which is important to generate consistent stiffness matrix by means of the displacement-controlled scheme.
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