Experimental study of steel slit damper for passive energy dissipation

Chan, Ricky; Albermani, Faris

doi:10.1016/j.engstruct.2007.07.005

Cited by 356 publications

(166 citation statements)

References 16 publications

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“…Chan and Albermani [1] derived the yield strength of a slit damper assuming elastic-perfectly-plastic behavior, which is summarized as follows. When displacement is large, plastic hinges form at both ends of the strip with the full plastic moment obtained by multiplication of the yield stress and the plastic section modulus:…”

Section: Modeling Of Hybrid Slit-friction Dampersmentioning

confidence: 99%

“…The seismic performances of hysteretic passive energy dissipative devices have been investigated such as slit dampers [1], friction dampers [2], and buckling restrained braces [3]. Tremblay et al [4] carried out comparative study of tied braced frames with three types of energy dissipation devices such as friction dampers, buckling restrained bracing members, and self-centering energy dissipative devices..…”

Section: Introductionmentioning

confidence: 99%

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Seismic Performance Evaluation of Steel Moment Frames with Slit-Friction Hybrid Dampers

2015

International Academy of Engineers (IA-E) April 24-25, 2015 Pattaya (Thailand)

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Abstract-This study investigates the seismic energy dissipation capacity of a hybrid passive damper composed of a friction and a hysteretic slit damper. The capacity of the hybrid device required to satisfy a given target performance of a reinforced concrete moment resisting frame designed with reduced design base shear is determined based on the ASCE/SEI 7-10 process, and the seismic performances of the structures designed without and with the hybrid dampers are verified by nonlinear dynamic analyses.

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Section: Modeling Of Hybrid Slit-friction Dampersmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Seismic Performance Evaluation of Steel Moment Frames with Slit-Friction Hybrid Dampers

2015

International Academy of Engineers (IA-E) April 24-25, 2015 Pattaya (Thailand)

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“…However, it will cause distortion of hysteresis loop if the shape of low-yield point damper is not suitable. In addition, the damper can just play a role in the strong earthquake, and it accumulates deformation in the earthquake and wind excitation; the hardening of steel makes the seismic response of the structure seriously inconsistent with the design [11][12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Mechanical Performance and Design Method of Improved Lead Shear Damper with Long Stroke

Wang

Yan

2018

Shock and Vibration

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The paper presents experimental study on an improved plate lead shear damper with long stroke (ILSD-LS) which is developed to meet the engineering requirements for high-rise structures with long periods subjected to the long-period earthquakes. Finite element analysis is also carried out to investigate the proposed damper. Based on the ideal rigid-plastic constitutive law of lead, a mechanical model of the ILSD-LS is established. Compared with ordinary dampers, ILSD-LS has better damping force, energy dissipation capacity, and stability according to the results of simulation and experiments. The method of calculating damping force is reasonable and accurate. In order to verify the damping effect of ILSD-LS for the structures with long periods under long-period ground motions, the nonlinear time history analysis of a typical high-rise structure with ILSD-LS is carried out. The numerical results indicate that the seismic responses of the high-rise structure with ILSD-LS are significantly reduced when subjected to long-period ground motion.

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“…Among many EDDs developed, dampers that utilize metallic yielding to dissipate energy are widely adopted for they are inexpensive, insensitive to frequency of vibration, and require minimal maintenance. Developed metallic EDD include the patented ADAS (Bergman et al 1987), its variant triangular shape TADAS and the Steel Slit Damper (Chan and Albermani, 2008). The Buckling-restrained brace (Black et al, 2004) and its variant Buckling-restrained lug (Chan and Albermani, 2013), on the other hand, makes use of the axial deformation of steel.…”

Section: Introductionmentioning

confidence: 99%

A Passive Rotary System for Seismic Risk Mitigation of Steel Structures

Chan

Wong

2014

AJCEB-Conerence Series

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This paper presents a novel bracing system designed for earthquake risk mitigation for steel structures. It involves a rotary system which a Chebyshev linkage connected to the ground and the building frame. Upon earthquake excitation, movement of structure floor slabs causes a rotational motion in the disc. Displacement-based dampers are installed between the rotary system and the ground which damp the structural vibrations. The system amplifies the travel of the dampers and efficiency is enhanced. In addition, the cross-brace members are always in tension, permitting the use of very slender sections. The paper first reviews the governing equations of the system, followed by a physical model demonstration. A 3-degreeof-system model with the proposed rotary system was subjected to simulated ground shaking. Acceleration on top floor was measured. Results demonstrated that proposed system effectively supresses the vibrational characteristics of the structure, and represents a viable and inexpensive solution to mitigate seismic risks.

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Experimental study of steel slit damper for passive energy dissipation

Cited by 356 publications

References 16 publications

Seismic Performance Evaluation of Steel Moment Frames with Slit-Friction Hybrid Dampers

Seismic Performance Evaluation of Steel Moment Frames with Slit-Friction Hybrid Dampers

Mechanical Performance and Design Method of Improved Lead Shear Damper with Long Stroke

A Passive Rotary System for Seismic Risk Mitigation of Steel Structures

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