Abstract

To understand the complex behavior of the infilled frames, experimental or analytical studies are generally
carried out. Though experimental studies are more realistic, they are expensive and require sophisticated testing
facilities. Moreover, as parameters are many, it requires large number of trials. With the availability of high
speed computers, analytical method have become more popular, especially when the parametric analysis is being
carried out. With the present day development in finite element analysis, a number of softwares are available
which are capable of modeling the nonlinear behavior of structures. Thus, the numerical methods are widely used
and in the present study, the numerical analysis is carried out using popular finite element software’s ATENA
2D (2003). The finite element software is used to capture the nonlinear behavior of infilled frame. The important
parameters which affect the behavior of reinforced concrete infilled frames are identified by conducting nonlinear
analysis. Load displacement curves, distribution of principal compressive stresses and principal tensile stresses,
and cracks patterns are used to understand the behavior of infilled frames.