Abstract
Lateral load resisting systems (LLRS) play a key role in reducing or eliminating the damage of the structure due to the earthquake. The damping system is one of the LLRS which controls the vibrations when an earthquake occurs. Fluid Viscous damping decreases tension and deflection because due to flexing the columns, the energy from the damping is totally out of phase with stresses. This is valid only for viscous fluid damping, where the damping force varies with the velocity of the stroke. Other types of damping do not vary their performance with velocities, such as yielding components, friction devices, plastic hinges, and visco-elastic elastomers; hence, they can increase column stress while reducing deflection, and typically do so. While coming to this work, under the seismic coefficient method for seismic zone-5, G+10 multistoried buildings were modelled and analyzed in ETABS along with limit state of collapse and limit state of serviceability load combinations. The response of the building was examined by introducing viscous dampers to the structure by varying the position of FVD in the building (S-1, S-2, and S-3), which are regular and irregular in plan, and by altering the width of the bay, by inserting the dampers at the four corners of the building in the first stage, by inserting the dampers at the four edges of the building in the second stage (S-2), and by inserting the dampers at the centre of the building in the third stage (S-3). Dampers are introduced from top to bottom storey of the building. Placement of FVD device system plays a key role against earthquake forces which are acting on the structure during the event of an earthquake. After the comparison in between above-defined stages and various parameters, when dampers are inserted at the edges of the building (S-3), the entire building is displaced identically with lesser values of displacement and inter-storey drifts, which are significant parameters in the event of an earthquake.
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