Effect of Tuned Spring on Vibration Control Performance of Modified Liquid Column Ball Damper

Abstract

This paper reports the theoretical findings of the new modified type of tuned liquid column ball damper (TLCBD), called a tuned liquid column ball spring damper (TLCBSD). In this new modified form, the ball inside the horizontal section of the damper is attached to the spring. Furthermore, two types of this modified version are proposed, known as a tuned liquid column ball spring sliding damper (TLCBSSD) and a tuned liquid column ball spring rolling damper (TLCBSRD). In the former, the rotational motion of the ball attached to the spring is restricted, whereas in the latter, the ball attached to the spring can translate as well as rotate. Mathematical models and optimum design parameters are formulated for both types. The performance of these new modified damper versions is assessed numerically and subjected to harmonic, seismic, and impulse loadings. The results show that the performance of the newly proposed dampers is relatively better than traditional TLCBDs in harmonic and seismic excitations. The peak response reduction soon after the impact load becomes zero is comparatively better in TLCBSDs over TLCBDs. Overall, the newly proposed passive vibration control devices performed excellently in structure response reduction over TLCBDs.

An experimental study of tuned liquid column damper controlled multi-degree of freedom structure subject to harmonic and seismic excitations

“…It can be observed that controlled MDOF structure responses have been improved with TLCD at all loading conditions except 1.95 Hz. This slight increase in the response of the structure equipped with liquid dampers at loading frequencies higher than resonance loading frequency has been reported in the literature [ 15 , 51 ]. It is because the liquid dampers are effective for low frequencies vibration and effective only in the resonance region.…”

“…These systems are mainly passive, active, semi-active, and hybrid [ 16 – 19 ]. Compared to active, semi-active and hybrid systems, passive damping systems are the most reliable and economical vibration mitigation systems [ 20 , 21 ].…”

“…Shum has suggested optimal design parameters for TLCDs for reducing wind-induced vibrations [ 39 ]. With time, various modified versions of TLCDs have been introduced and studied for better performance and efficiency [ 15 , 20 , 33 , 51 – 53 ]. But those modifications in TLCD have also brought complexity to the system.…”

Analytical Model of Structural Damping in Friction Module of Shell Shock Absorber Connected to Spring

“…Passive-tuned mass and liquid dampers are a popular choice among structural vibration control systems for being reliable, economical, and easy to implement [25]. Passive vibration control devices like tuned liquid column dampers not only signifcantly reduce buildings' vibrations but also can serve as a water storage facility [26]. Particular interest is aroused by the dynamic damper designs based on the efect of collisions [27,28].…”

Effect of Volume Fraction on Shear Mode Properties of Fe-Co and Fe-Ni Filled Magneto-Rheological Elastomers

“…Owing to the life and property damage caused by the earthquakes, different techniques such as vibration damping, and vibration isolation are being used for the seismic protection of a structure [ 1 , 2 , 3 ]. Over the decades, base isolation has been extensively researched and efficiently used for vibration isolation of a structure [ 4 , 5 , 6 ].…”