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Development and Analysis of Negative Stiffness Friction Damping Device
https://orcid.org/http://orcid.org/0000-0003-0407-8027
https://orcid.org/http://orcid.org/0000-0003-0956-1237
https://orcid.org/http://orcid.org/0000-0002-7526-0558
https://orcid.org/http://orcid.org/0000-0001-5764-4577
https://orcid.org/http://orcid.org/0000-0002-7222-9774
A new type of negative stiffness friction damping device (NSFDD) was developed in this study, which can solve the problem of poor energy dissipation of the existing passive negative stiffness damping device. The friction force is generated by squeezing the friction plate with the preloaded nitrogen spring vertically. When the NSFDD is working, the friction plate causes the nitrogen spring to rotate and negative stiffness force and friction force are generated. The results of the performance test show that the NSFDD can achieve negative stiffness in the hysteretic model. Comparing with the existing negative stiffness device, the NSFDD has larger stroke, more stable negative stiffness and better energy dissipation capacity. The finite element software has been used to simulate the low cycle reciprocation of a structure, and the results show that the NSFDD reduces the stiffness of the structure while increasing the damping of the structure. The results of the simulation and analysis of the shock absorption plan of the NSFDD show that the NSFDD reduces the stiffness of the floor, thereby effectively control on the shear force, displacement and acceleration response of the structure.
Development and Analysis of Negative Stiffness Friction Damping Device
https://orcid.org/http://orcid.org/0000-0003-0407-8027
https://orcid.org/http://orcid.org/0000-0003-0956-1237
https://orcid.org/http://orcid.org/0000-0002-7526-0558
https://orcid.org/http://orcid.org/0000-0001-5764-4577
https://orcid.org/http://orcid.org/0000-0002-7222-9774
A new type of negative stiffness friction damping device (NSFDD) was developed in this study, which can solve the problem of poor energy dissipation of the existing passive negative stiffness damping device. The friction force is generated by squeezing the friction plate with the preloaded nitrogen spring vertically. When the NSFDD is working, the friction plate causes the nitrogen spring to rotate and negative stiffness force and friction force are generated. The results of the performance test show that the NSFDD can achieve negative stiffness in the hysteretic model. Comparing with the existing negative stiffness device, the NSFDD has larger stroke, more stable negative stiffness and better energy dissipation capacity. The finite element software has been used to simulate the low cycle reciprocation of a structure, and the results show that the NSFDD reduces the stiffness of the structure while increasing the damping of the structure. The results of the simulation and analysis of the shock absorption plan of the NSFDD show that the NSFDD reduces the stiffness of the floor, thereby effectively control on the shear force, displacement and acceleration response of the structure.
Development and Analysis of Negative Stiffness Friction Damping Device
https://orcid.org/http://orcid.org/0000-0003-0407-8027
https://orcid.org/http://orcid.org/0000-0003-0956-1237
https://orcid.org/http://orcid.org/0000-0002-7526-0558
https://orcid.org/http://orcid.org/0000-0001-5764-4577
https://orcid.org/http://orcid.org/0000-0002-7222-9774
A new type of negative stiffness friction damping device (NSFDD) was developed in this study, which can solve the problem of poor energy dissipation of the existing passive negative stiffness damping device. The friction force is generated by squeezing the friction plate with the preloaded nitrogen spring vertically. When the NSFDD is working, the friction plate causes the nitrogen spring to rotate and negative stiffness force and friction force are generated. The results of the performance test show that the NSFDD can achieve negative stiffness in the hysteretic model. Comparing with the existing negative stiffness device, the NSFDD has larger stroke, more stable negative stiffness and better energy dissipation capacity. The finite element software has been used to simulate the low cycle reciprocation of a structure, and the results show that the NSFDD reduces the stiffness of the structure while increasing the damping of the structure. The results of the simulation and analysis of the shock absorption plan of the NSFDD show that the NSFDD reduces the stiffness of the floor, thereby effectively control on the shear force, displacement and acceleration response of the structure.
Development and Analysis of Negative Stiffness Friction Damping Device
KSCE J Civ Eng
Sun, Tianwei (author) / Peng, Lingyun (author) / Li, Xiaojun (author) / Kang, Yingjie (author) / Deng, Yuke (author)
KSCE Journal of Civil Engineering ; 25 ; 2587-2602
2021-07-01
16 pages
Article (Journal)
Electronic Resource
English
Negative stiffness friction damping for seismically isolated structures
| Online Contents | 2006