Experimental and Numerical Study of Energy Dissipation Components of a New Metallic Damper Device

Abstract

Purpose The novel metallic damper device for passive vibration control of structures, which is designed primarily for seismic protection of buildings, is described in this paper. It consists of the base plate, fixed into foundation, with two concentric cycles of vertical components and a middle steel activating plate anchored to the isolated structure. During an earthquake, the middle steel activating plate moves together with main structure causing bending of vertical components. Seismic energy is absorbed due to plastic deformation of the vertical components of the damper. The performance of various vertical components, the key elements of the novel damper is studied in this paper. The advantages of this type of damper reflect in its ability to adapt its own features depending on the intensity of the earthquake and that it has equivalent characteristics in every horizontal direction due to rotational symmetry. Methods Sixteen experimental tests of the vertical components of the damper, were conducted to obtain their hysteretic behaviour. Numerical models using the finite element method and the Abaqus/Standard software were developed, validated and verified with experimentally obtained results. Results The experimental results show significant energy absorption of the vertical components of the novel damper. Numerical models can be used in further research instead of expensive experimental tests. Conclusions The vertical components of the novel damper possess extraordinary hysteretic performance. If the components of the energy dissipation device are properly designed for maximum displacements, the device is not expected to suffer heavy damage or total failure during earthquakes.

A Review on the Latest Advancements and Innovation Trends in Vibration-Based Structural Health Monitoring (SHM) Techniques for Improved Maintenance of Steel Slit Damper (SSD)

“…Their holistic evaluation not only confirmed the effectiveness of the dampers in dissipating seismic energy but also informed the refinement of numerical models aiming to accurately predict the dampers' performance under seismic loading. In the case of Zlatkov et al [71], their team investigated a new metallic damper device designed for seismic energy dissipation. Their innovative approach focused on the experimental testing of eight vertical components, each varying in crosssectional size, to evaluate their hysteretic behavior and capability for seismic energy absorption.…”

The Behavior of Energy Dissipation Devices and Seismic Isolation During Near-Fault Ground Motions

“…However, there is no indication of the seismic parameter governing the structural reaction in the presence of long pulses of velocity and displacement, or of how to regulate the isolation system's size prior to the occurrence of the aforementioned pulses. In specialised literature, there are many analysis and design processes for passive energy dissipation systems (13)(14). The specifications for such buildings are outlined in publications and standards (AISC 341, 2005).…”