Experimental study on the dynamic performance of a winding rope fluid viscous damper. (15th April 2023)

• Record Type: Journal Article
• Authors: Zhang, Wenxue; Zhang, Cheng; Su, Lijun; Zheng, Yongrui; Du, Xiuli
• Is Part Of: Engineering structures. Volume 281(2023)
• Publication Date: 2023-04-15
• Subjects: Earthquakes -- Passive control -- WRFVD -- Fluid viscous damper -- Dynamic performance -- Laboratory test; Structural engineering -- Periodicals; Structural analysis (Engineering) -- Periodicals; Construction, Technique de la -- Périodiques; Génie parasismique -- Périodiques; Pression du vent -- Périodiques; Earthquake engineering; Structural engineering; Wind-pressure; Periodicals; 624.105
• DOI: 10.1016/j.engstruct.2023.115786
• Languages: English
• ISSNs: 0141-0296

Abstract

Highlights: A combination of friction dampers and fluid viscous dampers. Innovative use of the amplification principle of the winding rope. Amplify the damping force of fluid viscous dampers by more than three times. Same hysteresis characteristics as fluid viscous dampers. The proposed theoretical formulation predicts the damping force accurately. Abstract: This study proposed a winding rope fluid viscous damper (WRFVD) using the winding ropes to amplify the damping force of a fluid viscous damper. To investigate the dynamic performance of the WRFVD, four different prototypes were fabricated and tested under a series of sinusoidal loading protocols. Experimental results demonstrated that the WRFVD is a velocity-dependent damping device with significant and stable energy dissipation capacity. The winding rope amplification mechanism can effectively amplify the damping force of the fluid viscous damper by 3 to 6 times, and amplify the energy dissipation of the fluid viscous damper by 3.5 to 6.9 times. After 30 cycles of fatigue loading, the maximum damping force and the energy dissipation capacity of the WRFVD almost not decayed. The damping force of the WRFVD had a linear relationship with the damping force of fluid viscous damper with the coefficient of β, and β was only related to the construction of the WRFVD itself. The theoretical model of damping force based on the Maxwell- β nonlinear model could reflect the mechanical properties of the WRFVD well, and the theoretical and experimental hysteresis curves are in good agreement.