A semi-active toroidal TLCD for multidirectional vibration reduction of structures. (1st December 2022)

• Record Type: Journal Article
• Authors: Zhang, Jian; Ding, Hao; Wang, Jin-Ting
• Is Part Of: Smart materials and structures. Volume 31:Number 12(2022)
• Publication Date: 2022-12-01
• Subjects: semi-active -- toroidal tuned liquid column damper -- liquid level regulation -- frequency identification -- real-time hybrid simulation; Smart materials -- Periodicals; Strucural design -- Periodicals; 620.11
• DOI: 10.1088/1361-665X/ac9dd3
• Languages: English
• ISSNs: 0964-1726

Abstract

Abstract: The toroidal tuned liquid column damper (TTLCD) is a recently developed device to mitigate multidirectional vibrations of structures. In this paper, a semi-active TTLCD (S-TTLCD), which can automatically identify the frequency change of structures and tune its natural frequency correctly by adjusting the liquid level, is proposed. The feasibility of the S-TTLCD is proved experimentally. The impacts of several important parameters, such as the multi-stage stiffness variation of structure, the pump flow rate, the mass ratio, and the damping ratio, on the performance of the S-TTLCD are evaluated numerically. The results confirm that the S-TTLCD is well adaptive and reduces the structural response more significantly when the structural natural frequency changes, compared to the passive TTLCD.