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

Applied Sciences

In-Ho Kim¹  Syed Hassan Farooq²  Muhammad Usman³  Mati Ullah Shah³ 

[1] Department of Civil Engineering, Kunsan National University, Kunsan 54150, Korea;Military College of Engineering (MCE), National University of Sciences and Technology (NUST), Risalpur 24080, Pakistan;School of Civil and Environmental Engineering (SCEE), National University of Sciences and Technology (NUST), H-12 Sector, Islamabad 44000, Pakistan;

关键词: vibration controls;    tuned liquid column ball spring damper;    tuned liquid column ball spring sliding damper;    tuned liquid column ball spring rolling damper;    tuned liquid column damper;    tuned liquid column ball damper;   

DOI  :  10.3390/app12010318

来源: DOAJ

【 摘 要 】

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.

【 授权许可】

Unknown