A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Development of a negative stiffness friction damping device with an amplification mechanism
Highlights A novel negative stiffness friction damping device (NSFDD) was proposed. Large force capacity of NSFDD was realized by two-consecutive lever and gas spring. A mechanical model was proposed to represent force–displacement relationship of NSFDD. Performance of NSFDD was examined by experimental tests and finite element analyses. The NSFDD exhibited obvious negative stiffness and stable energy dissipation.
Abstract This paper proposes an innovative negative stiffness friction damping device (NSFDD), which is characterized with a combination of negative stiffness and friction damping force. The large force capacity of the NSFDD is realized by the amplification mechanism of a two-consecutive lever and using the pre-compressed gas springs. A mechanical model is developed to represent the force–displacement relationship of the proposed NSFDD. The influence of key parameters on the NSFDD performance is analyzed using this mechanical model and demonstrates the advantage of using pre-compressed gas springs. A NSFDD specimen was manufactured and examined by experimental tests. The NSFDD specimen exhibits an obvious negative stiffness and stable energy dissipation, demonstrating the feasibility and effectiveness of the NSFDD. Finally, a refined finite element (FE) model is developed to represent the NSFDD. Both the experimental tests and FE simulation validate the accuracy of the mechanical model of the NSFDD.
Development of a negative stiffness friction damping device with an amplification mechanism
Highlights A novel negative stiffness friction damping device (NSFDD) was proposed. Large force capacity of NSFDD was realized by two-consecutive lever and gas spring. A mechanical model was proposed to represent force–displacement relationship of NSFDD. Performance of NSFDD was examined by experimental tests and finite element analyses. The NSFDD exhibited obvious negative stiffness and stable energy dissipation.
Abstract This paper proposes an innovative negative stiffness friction damping device (NSFDD), which is characterized with a combination of negative stiffness and friction damping force. The large force capacity of the NSFDD is realized by the amplification mechanism of a two-consecutive lever and using the pre-compressed gas springs. A mechanical model is developed to represent the force–displacement relationship of the proposed NSFDD. The influence of key parameters on the NSFDD performance is analyzed using this mechanical model and demonstrates the advantage of using pre-compressed gas springs. A NSFDD specimen was manufactured and examined by experimental tests. The NSFDD specimen exhibits an obvious negative stiffness and stable energy dissipation, demonstrating the feasibility and effectiveness of the NSFDD. Finally, a refined finite element (FE) model is developed to represent the NSFDD. Both the experimental tests and FE simulation validate the accuracy of the mechanical model of the NSFDD.
Development of a negative stiffness friction damping device with an amplification mechanism
Sun, Tianwei (author) / Peng, Lingyun (author) / Ji, Xiaodong (author) / Li, Xiaojun (author)
Engineering Structures ; 275
2022-11-08
Article (Journal)
Electronic Resource
English
Development and Analysis of Negative Stiffness Friction Damping Device
| Springer Verlag | 2021