Parameter optimization of toroidal tuned liquid column dampers for suppressing multi-directional harmonic vibration of structures. Issue 1 (2nd January 2022)

• Record Type: Journal Article
• Authors: Ding, Hao; Wang, Jin-Ting; Lu, Li-Qiao; Pan, Jian-Wen
• Is Part Of: Engineering optimization. Volume 54:Issue 1(2022)
• Page Start: 1
• Page End: 19
• Publication Date: 2022-01-02
• Subjects: Toroidal tuned liquid column damper -- multi-directional vibration control -- parameter optimization -- harmonic vibration -- closed-form solution; Engineering design -- Periodicals; Mathematical optimization -- Periodicals; 620.0042
• DOI: 10.1080/0305215X.2020.1849174
• Languages: English
• ISSNs: 0305-215X

Abstract

Abstract : In this article, optimization of the toroidal tuned liquid column damper (TTLCD) for suppressing harmonic vibration is investigated. First, a closed-form solution for the TTLCD–structure system is derived. Based on the solution, optimization is carried out and some design tables listing the optimum parameters are obtained. Secondly, a parametric investigation of key parameters that affect the damping properties of the TTLCD–structure system is performed to reveal how to produce optimal damping effects. Finally, a design example of the TTLCD is illustrated. A conventional TLCD is also designed based on the same controlled structure for comparison. The results reveal that the TTLCD can maintain the equivalent damping ratio of the system at a high level in arbitrary directions, while the TLCD has a high damping ratio in its main control direction but falls significantly in the direction perpendicular to its main control direction.