Author
Abstract
This research work presents a nonlinear finite element investigation on the
behavior of lightweight reinforced concrete beams. This investigation is carried
out in order to get a better understanding of their behavior throughout the entire
loading history.
The three-dimensional 20-node brick elements are used to model the
concrete, while the reinforcing bars are modeled as axial members embedded
within the concrete brick elements. The compressive behavior of concrete is
simulated by an elastic-plastic work-hardening model followed by a perfectly
plastic response, which terminated at the onset of crushing. In tension, a fixed
smeared crack model has been used .The effect of some important parameters
(ƒ'c , rw ,a/d) have been investigated to study their influence on the predicted loaddeflection
curves
Keywords
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