@conference{
author = "Tomić, Nikola and Terzić, Anja and Bojović, Dragan",
year = "2024",
abstract = "Following the emergence and establishment of performance-based design as a widely recognized
and applied practice, numerous significant advances in computational techniques have been
made. Arguably, nonlinear methods of analysis – static or dynamic – provide the most detailed
and accurate insight into behavior of the structure which is designed or assessed. While the
current codes of practice permit their use, provisions are vague in some aspects, leaving many
decisions and assumptions up to the engineer. This paper aims to expand the relatively limited
experience with implementation of different distributed plasticity modeling approaches through
a case study based on experimental data. Some particulars of the behavior of structural elements
made of strain-softening materials, and of their corresponding numerical models, are briefly
introduced. Case study is conducted to provide an overview on the procedures for inelastic
analysis of reinforced concrete frames through a side-by-side comparison of four alternative
approaches for modeling of RC beams and columns with one-dimensional distributed plasticity
finite elements with fiber-discretized cross sections. The analyzed structure consists of a
reinforced concrete column with a fixed base, which is, under varying axial loads, subjected to
monotonic and cyclic lateral displacements applied at its top. Models comprised of force-based
elements with different arrangements of integration points, as well as of displacement-based
elements, are compared. Advantages, limitations and special considerations which need to be
taken into account for each of the approaches are demonstrated through the example. Influence
of concrete confinement is studied by analyzing another column with a different arrangement of
transverse reinforcement. Global structural response is evaluated by comparison of pushover and
cyclic curves for different models. Influence of modeling approach on objectivity of the local
response and the corrections which need to be made for certain approaches are showcased by
moment-rotation curves of the yielded section at the column base. Considerations and findings
presented in the paper, along with other published case studies, can be used for reference when
preparing a computational model for inelastic analysis of a reinforced concrete structure.",
publisher = "University of Montenegro Faculty of Civil Engineering",
journal = "The ninth international conference civil engineering science & practice, GNP 2024 proceedings, Kolašin, Montenegro",
title = "Comparison of distributed plasticity approaches for inelastic analyisis of reinforced concrete frames",
pages = "304-297",
url = "https://hdl.handle.net/21.15107/rcub_rims_856"
}
