FINITE ELEMENT MODELING FOR REINFORCING STEEL SUBJECTED TO REVERSED CYCLIC LOADING WITH MODERATE COMPRESSIVE STRESS AND STRAIN DEMANDS

  • Data Iranata Institut Teknologi Sepuluh Nopember (ITS), Surabaya, Indonesia

Abstract

The behavior of reinforcing steel may control the response of reinforced concrete structural elements subjected to earthquake loading. Therefore, it is necessary to develop an analytical model that predicts the basic characteristics of steel within a range of loading that is appropriate for reinforced concrete structural
systems. This paper presents the finite element modeling for reinforcing steel subjected to reversed cyclic loading with moderate compressive stress and strain demands. The proposed model is developed on the basis  of  modern  plasticity  theory,  with  the  one  dimensional  behavior  of  reinforcing  steel  being
representative of an elastic-plastic material. The model also accounts for cyclic strain hardening through shifting  of  the  reference  curve  as  a  function  of  strain  history.  Furthermore,  the  model  incorporates variability in initial unloading stiffness, cyclic strain softening and memory of multiple loads-unload cycles.
Additionally, buckling analysis of is also considered using large deflection theory of beam elements which indices such as the buckling stress, the residual stress and the buckling mode are used to characterize the buckling behavior. The proposed steel material model is implemented in the finite element program. This
implementation is used to analyze the response of reinforcing steel subjected to various load histories. The behavior  of  steel  as  predicted  by  the  material  model  is  compared  with  the  experimentally  observed response for a variety of load histories. The comparison results indicate that the proposed model is
appropriate for predicting the response of typical reinforcing steels subjected to variable reversed cyclic loading with moderate compressive stress and strain demands.

Published
2011-08-01
How to Cite
IRANATA, Data. FINITE ELEMENT MODELING FOR REINFORCING STEEL SUBJECTED TO REVERSED CYCLIC LOADING WITH MODERATE COMPRESSIVE STRESS AND STRAIN DEMANDS. EACEF - International Conference of Civil Engineering, [S.l.], v. 1, p. 004, aug. 2011. Available at: <http://proceeding.eacef.com/ojs/index.php/EACEF/article/view/360>. Date accessed: 19 may 2024.
Section
Group of Structural and Construction Engineering