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Mechanical properties of shear-type hysteretic dampers supported by studs
Graphical abstract Display Omitted
Highlights Circular hollow section damper with a stud support analyzed. Comparison with H-shaped shear panel damper through cyclic loading tests. The cyclic hysteresis loops of the damper unit and system were stable spindle-shaped curves. Nonlinear FEA revealed the influence of the initial stiffness on the stud-supported damper.
Abstract The shear-type hysteretic damper of an energy-absorbing member reduces the damage to the main member, such as column or beam, by absorbing seismic energy as the shear deformation of steel. As a support element for connecting the damper to the structure, brace-type and stud-type systems are mainly used. In the stud support, the stress transmission mechanism to the damper is simple, and the degrees of freedom of the plane are higher than that of the other support types. For such a shear-type damper, an H-shaped cross-section with a panel made of a highly ductile material, such as a low-yield-point steel, is generally adopted. This study used a low-yield-point steel circular hollow-section damper, which was installed in the frame as a stud support form, and a case was used to receive the in-plane force. For the damper to function effectively in the frame, it was necessary to determine the elastoplastic mechanical properties of the damper and the dampers supported by the stud. The mechanical properties of the damper unit and damper system with the stud were examined by cyclic loading test. An H-shaped shear panel damper was used as the control group with almost the same full plastic shear strength, initial stiffness, and weight as the circular hollow-section damper and the cyclic loading test was conducted under the same conditions. The effectiveness of the low-yield-point steel circular hollow-section damper was examined as a shear-type hysteretic damper by comparing both. In addition, a nonlinear finite element analysis was performed to determine the influence of the initial stiffness on the damper supported by the stud.
Mechanical properties of shear-type hysteretic dampers supported by studs
Graphical abstract Display Omitted
Highlights Circular hollow section damper with a stud support analyzed. Comparison with H-shaped shear panel damper through cyclic loading tests. The cyclic hysteresis loops of the damper unit and system were stable spindle-shaped curves. Nonlinear FEA revealed the influence of the initial stiffness on the stud-supported damper.
Abstract The shear-type hysteretic damper of an energy-absorbing member reduces the damage to the main member, such as column or beam, by absorbing seismic energy as the shear deformation of steel. As a support element for connecting the damper to the structure, brace-type and stud-type systems are mainly used. In the stud support, the stress transmission mechanism to the damper is simple, and the degrees of freedom of the plane are higher than that of the other support types. For such a shear-type damper, an H-shaped cross-section with a panel made of a highly ductile material, such as a low-yield-point steel, is generally adopted. This study used a low-yield-point steel circular hollow-section damper, which was installed in the frame as a stud support form, and a case was used to receive the in-plane force. For the damper to function effectively in the frame, it was necessary to determine the elastoplastic mechanical properties of the damper and the dampers supported by the stud. The mechanical properties of the damper unit and damper system with the stud were examined by cyclic loading test. An H-shaped shear panel damper was used as the control group with almost the same full plastic shear strength, initial stiffness, and weight as the circular hollow-section damper and the cyclic loading test was conducted under the same conditions. The effectiveness of the low-yield-point steel circular hollow-section damper was examined as a shear-type hysteretic damper by comparing both. In addition, a nonlinear finite element analysis was performed to determine the influence of the initial stiffness on the damper supported by the stud.
Mechanical properties of shear-type hysteretic dampers supported by studs
Park, Hae-Yong (author) / Kim, Jinwoo (author) / Kuwahara, Susumu (author)
Engineering Structures ; 270
2022-08-21
Article (Journal)
Electronic Resource
English
| Springer Verlag | 2024
Hysteretic Model of Stiffened Shear Panel Dampers
| Online Contents | 2006
Hysteretic Model of Stiffened Shear Panel Dampers
| British Library Online Contents | 2006