Generalized Mathematical Modeling of Tuned Liquid Column Dampers Under Varying Excitation Amplitudes

Earthquake Engineering & Structural Dynamics, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 17, 2025

ABSTRACT The tuned liquid column damper (TLCD) is an economical and highly efficient device for controlling structural vibrations. Existing research on TLCDs primarily focuses scenarios where the maximum displacement less than initial depth, ensuring that horizontal tube remains filled with liquid, excluding presence of gas. However, it crucial to acknowledge under substantial external excitation amplitudes, a phenomenon not thoroughly encompassed within confines classical TLCD model, possibility gas intrusion into arises. This study develops generalized theoretical model varying amplitudes. developed considers following two working states: (1) no air in segment, aligning model; (2) ingress left or right side tube. Accordingly, proposed encompasses as special instance. Computational fluid dynamics (CFD) simulations are conducted TLCDs, outcomes meticulously compared predictions from model. It confirmed works well predicting hysteretic behavior different Based effects length ratio (the total length) energy dissipation characteristics, impacts intensity control efficiency, comprehensively investigated. results indicate has negative performance. reported findings hold significant implications understanding dynamic large amplitude excitations.

Language: Английский

Multiparameter vibration isolator with magnetic inerter and GER-control

International Journal of Mechanical Sciences, Journal Year: 2025, Volume and Issue: unknown, P. 110307 - 110307

Published: April 1, 2025

Language: Английский