Investigating the Effect of the Geometric Shape of the Slit on the Seismic Behavior of the Steel Slit Damper in the Concentric Braced
Subject Areas : Analysis of Structure and Earthquake
Shahrzad Pahang
1
,
Leila Hosseinzadeh
2
1 - Department of Civil Engineering, Tabriz Branch, Islamic Azad University, Tabriz, Iran.
2 - Civil Engineering, Tabriz Branch, Islamic Azad University, Tabriz, Iran.
Keywords: Slotted Damper, Slot Geometry, Convergent Capability, Stiffness, Resistance, Energy Absorption.,
Abstract :
Considering the challenges related to improving buildings' resistance to vibrations and optimizing their design against earthquakes, several methods have been developed in recent years. One such method involves the use of steel dampers. Among them, slotted dampers have emerged as a promising alternative to conventional techniques used in the construction and structural engineering industries. The performance of these dampers can be influenced by various factors, including their geometric properties and the arrangement of the slots.This study investigates the effect of slot geometry on the seismic behavior of the dampers. To this end, while keeping the slot area constant, three different slot shapes, bean, oval, and rhombus, were analyzed. Dampers with these slot shapes were modeled at three different heights: 140 mm, 210 mm, and 280 mm. The results indicate that the slot shape significantly influences key seismic parameters such as stiffness, ultimate strength, and energy absorption. Among the shapes studied, the rhombus-shaped slots demonstrated superior performance compared to the bean- and oval-shaped ones. Furthermore, an increase in damper height led to a decrease in seismic performance, with stiffness experiencing the most significant.
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