Development of the Passive Negative Stiffness Friction Device and Its Verification Through Shaking Table

Toyooka, Akihiro; Kouchiyama, Osamu; Iemura, Hirokazu; Ikeda, Manabu; Shimoda, Ikuo

doi:10.2208/jsceja.66.148

Cited by 3 publications

(2 citation statements)

References 8 publications

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“…The improved adaptive negative stiffness device can also effectively reduce the seismic response of the structure [47]. Compared with traditional damping devices, passive negative stiffness devices have better vibration control effects [48]. In addition, damping devices with negative stiffness elements have a better energy dissipation capacity than traditional damping devices [49].…”

Section: Introductionmentioning

confidence: 99%

Enhancing the Seismic Performance of Adjacent Building Structures Based on TVMD and NSAD

Kang,

Li,

Yan

et al. 2023

Buildings

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Under the action of an earthquake, the adjacent building structure will have a large displacement and even cause damage to the structure. Structure displacement can be suppressed by adding a tuned viscous mass damper (TVMD) and negative stiffness amplifier damper (NSAD) between adjacent structures. This paper deduces the motion equation of adjacent building structures under earthquake action. The transfer function of the vibration control system is obtained using Laplace transform. The parameter optimization analysis of the structural vibration control system is carried out through H2 norm theory. The vibration control performance of the TVMD vibration control system and NSAD vibration control system is studied by taking two adjacent building structures composed of single freedom building structures as an example. The results show that the two vibration damping devices proposed in this paper can play the role of vibration control. The influence of the same parameters on the two structures is not completely consistent. Under seismic excitation, the NSAD control system has better displacement control ability than the TVMD control system.

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Section: Introductionmentioning

confidence: 99%

Enhancing the Seismic Performance of Adjacent Building Structures Based on TVMD and NSAD

Kang,

Li,

Yan

et al. 2023

Buildings

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show abstract

“…As a previous passive technology to generate negative stiffness, a friction damper [1][2][3][4][5][6] using pendulum-type friction bearings has been proposed, whose curvature is opposite to conventional ones and exerts a negative stiffness by the weight of the structure itself. In addition, compressed coil springs [7][8][9][10][11][12][13][14][15][16][17] have been proposed that make use of geometric nonlinearity to produce variable negative stiffness that is suitable for application in the apparent weakening seismic protection scheme.…”

Section: Introductionmentioning

confidence: 99%

Shake table testing of a passive negative stiffness device with curved leaf springs for seismic response mitigation of structures

Shirai

Noro

Walsh

2021

Struct Control Health Monit

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Design and Parameter Optimization of the Reduction-Isolation Control System for Building Structures Based on Negative Stiffness

Kang

2023

Buildings

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In order to improve the damping capacity of building isolation system, this paper studies the damping isolation control system of the building structure based on negative stiffness. In this paper, the dynamic equation of the damping isolation control system is derived and its parameters are optimized by H2 norm theory and Monte Carlo pattern search method. Taking the 5-story building structure as an example, this paper analyzes and evaluates the damping performance of the damping isolation control system of the building structure under the actual earthquake. The results show that negative stiffness can improve the damping capacity of traditional isolation system. Additionally, the negative stiffness ratio under the condition of stability, the smaller the negative stiffness ratio, the stronger the vibration reduction ability of the negative stiffness. The damping isolation control system of building structure based on negative stiffness shows good damping effect under the actual earthquake.

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Development of the Passive Negative Stiffness Friction Device and Its Verification Through Shaking Table

Cited by 3 publications

References 8 publications

Enhancing the Seismic Performance of Adjacent Building Structures Based on TVMD and NSAD

Enhancing the Seismic Performance of Adjacent Building Structures Based on TVMD and NSAD

Shake table testing of a passive negative stiffness device with curved leaf springs for seismic response mitigation of structures

Design and Parameter Optimization of the Reduction-Isolation Control System for Building Structures Based on Negative Stiffness

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