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Abstract
Nonlinear finite element models, whenever is possible, shall be validated using experimental data. The efficiency of the nonlinear analysis depends on the choice of finite element models parameters. In the present work the calibration is conducted with the goal of observe and minimize the difference between the experimental data and the nonlinear finite element models, using two distributed plasticity modelling approaches. Several models with different parameters of distributed plasticity are used herein and compared against experimental data. The results show that the nonlinear analysis, when associated to a proper modeling strategy, is capable to successfully simulate experimental data.
Highlights
The nonlinear finite element models often have a large amount of uncertainty and they shall be calibrated recurring to experimental data
The object of the present study aims to calibrate force-based nonlinear finite element models of a reinforced concrete column with distributed plasticity against experimental data
The following plots shows the comparison between the cyclic envelope curves, obtained from experimental data, and the pushover analysis, regarding the finite length hinge and the distributed fiber formulation models
Summary
The nonlinear finite element models often have a large amount of uncertainty and they shall be calibrated recurring to experimental data. The object of the present study aims to calibrate force-based nonlinear finite element models of a reinforced concrete column with distributed plasticity against experimental data. A key point in the performance of force-based approach is the adoption of structural models more refined than those usually adopted in linear analyses, including a correct representation of the nonlinear phenomena. In this work two modelling approaches with different plastic distributions are adopted, and their numerical results are compared with the experimental outcome obtained from Tanaka’s experimental work (Tanaka 1990)
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