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Study on energy dissipation performance of low-yield-point steel shear panel dampers
Abstract To investigate the energy dissipation performance of low-yield-point steel shear panel dampers (LSSPD), the eleven full-scale LSSPD specimens were designed and tested. By conducting quasi-static cyclic tests and numerical simulations, the influence of shear plate aspect ratios, flange plate thickness, numbers and layout of stiffeners on the failure modes for energy dissipation performance of LSSPD have been investigated. The results indicate that: The energy-dissipating capacity of the damper is positively correlated with the shear plate's cross-sectional area. Increasing the flange plate thickness can improve the bearing capacity and energy dissipation of LSSPD, but with a limit. The stiffeners can enhance the ultimate bearing capacity of the damper. A single stiffener in both horizontal and vertical directions effectively controls the out-of-plane buckling deformation of the shear plate. It achieves a damper with a full hysteretic curve and a high energy dissipation capacity. However, the arrangement of stiffeners on different sides will decrease the ultimate bearing capacity of the damper. Through finite element supplementary analysis, it is recommended to select the shear plate aspect ratio between 20 and 41, and the flange restraint coefficient β f should not be <10 for damper design. Meanwhile, limiting the stiffener restraint coefficient β s within 45 is recommended to achieve better energy dissipation performance for low-yield-point dampers.
Highlights Application of new low yield point steel LY225 as main energy dissipation material for metal dampers. A single stiffener on both horizontal and vertical directions can control the out-of-plane deformation of the shear panel. The practical design suggestion and index are given through the FE models' extended parameter analysis.
Study on energy dissipation performance of low-yield-point steel shear panel dampers
Abstract To investigate the energy dissipation performance of low-yield-point steel shear panel dampers (LSSPD), the eleven full-scale LSSPD specimens were designed and tested. By conducting quasi-static cyclic tests and numerical simulations, the influence of shear plate aspect ratios, flange plate thickness, numbers and layout of stiffeners on the failure modes for energy dissipation performance of LSSPD have been investigated. The results indicate that: The energy-dissipating capacity of the damper is positively correlated with the shear plate's cross-sectional area. Increasing the flange plate thickness can improve the bearing capacity and energy dissipation of LSSPD, but with a limit. The stiffeners can enhance the ultimate bearing capacity of the damper. A single stiffener in both horizontal and vertical directions effectively controls the out-of-plane buckling deformation of the shear plate. It achieves a damper with a full hysteretic curve and a high energy dissipation capacity. However, the arrangement of stiffeners on different sides will decrease the ultimate bearing capacity of the damper. Through finite element supplementary analysis, it is recommended to select the shear plate aspect ratio between 20 and 41, and the flange restraint coefficient β f should not be <10 for damper design. Meanwhile, limiting the stiffener restraint coefficient β s within 45 is recommended to achieve better energy dissipation performance for low-yield-point dampers.
Highlights Application of new low yield point steel LY225 as main energy dissipation material for metal dampers. A single stiffener on both horizontal and vertical directions can control the out-of-plane deformation of the shear panel. The practical design suggestion and index are given through the FE models' extended parameter analysis.
Study on energy dissipation performance of low-yield-point steel shear panel dampers
Pan, Yi (author) / Gao, Haiwang (author) / Zeng, Han (author) / Li, Yongzhen (author)
2023-11-16
Article (Journal)
Electronic Resource
English
Cyclic behaviour of low-yield-point steel shear panel dampers
| Online Contents | 2016
Cyclic behaviour of low-yield-point steel shear panel dampers
| Elsevier | 2016