Experimental and Numerical Analysis of Steel Frame with Lateral Loading and Friction Dampers

• Published in: NeuroQuantology Vol. 20; no. 10; p. 4989
• Main Authors: THAMILPRIYA, V, Elangovan, G
• Format: Journal Article
• Language: English
• Published: Bornova Izmir NeuroQuantology 01.01.2022
• Subjects: Bearing strength; Damping; Design optimization; Earthquake dampers; Earthquake resistant structures; Earthquakes; Energy dissipation; Friction; Homogeneous structure; Lateral loads; Load carrying capacity; Numerical analysis; Reinforced cements; Reinforcing steels; Seismic analysis; Seismic design; Seismic response; Seismic waves; Shear forces; Shear modulus; Shear walls; Steel frames; Stiffening
• ISSN: 1303-5150
• DOI: 10.14704/nq.2022.20.10.NQ55475

Significant efforts have been made over the last two decades to reduce the seismic performance of structures through the principle of dissipating energy by strengthening and stiffening structures. Human beings need for reliable earthquake resistant design of structures. Also, there are many ways to reduce vibrations caused by seismic waves. The utility of using friction damping as a passive viscous dissipation mechanism will be addressed in this study along with some design recommendations for optimizing the number and location of absorbers in the structure. Hence the analyses by experiments are laborious, expensive and inaccuracy of results due to improper testing. So, we can do the analysis by using software packages and prove that results are same as that of the experimental results. This research is unique in that it uses seismic waves from real earthquakes to carry out a complete seismic analysis of an asymmetric reinforced cement (RC) structure located in a high-risk seismic area. The load was applied as reverse cycling loading in a modeled steel frame loading up to 4kN. The corresponding deflection was noted from that the stiffness and shear modulus were assessed as 1.78 KN/mm2 and 12.32 KN/mm2 . After assessing the individual performance of the damper unit, the damper model was developed. The assessed values were used to analyze the behavior of this dissipative bracing system. Story accelerations, displacements, base shear forces, and story drifts are evaluated with a fixed base station system (shear wall system) for a homogeneous structure to show increasing response of the dampers. The load carrying capacity of frame with friction damper was 20% more than that frame without friction damper also the study reveals that analytical results were well validated with the experimental results.