Shear wall has been conferred as a major lateral load resisting element in a building structure in any seismic prone zone. The presence of opening may alter the behavior of shear wall significantly. The present study aims to analyze the behavior of squat shear wall with different opening sizes and for different damping with openings located centrally. Finite element analysis has been performed using locking-free nine noded Lagrangian degenerated shell element with assumed strain approach to predict the displacement response of reinforced concrete shear wall with and without openings, subjected to monotonic and dynamic loading conditions. Material non-linearity has been considered using plasticity approach with associated flow rule and isotropic hardening. A five parameter Willam-Warnke failure criterion is considered to define the yielding/crushing of the concrete with tensile cut-off. For the monotonic static analysis, the load-displacement response of the shear wall has been plotted and displacement ductility ratio has been calculated for shear wall with different opening sizes. The Newmark Beta method of time integration has been used to predict the displacement time history response of shear wall with different opening sizes for different damping ratios. The influence of ductile detailing around the openings has also been investigated. The optimum size of openings is identified on the basis of static and dynamic analysis.

Keywords: Nonlinear, Static, Dynamic, Ductility, Opening, Strengthening, Squat.