振动
阻尼器
调谐质量阻尼器
还原(数学)
结构工程
流离失所(心理学)
有限元法
刚度
垂直位移
固有频率
振动控制
工程类
控制理论(社会学)
机械
数学
声学
物理
计算机科学
几何学
控制(管理)
人工智能
心理学
心理治疗师
作者
Kaifang Liu,Quan Shi,Yanhui Liu,Lulu Liu,Fang Zhou
标识
DOI:10.1016/j.ymssp.2023.110340
摘要
The conventional tuned liquid column gas damper, TLCGD, as a passive control, was normally used to reduce the structures' horizontal vibration, while limited studies have been conducted on the vertical. A modified damper, i.e., vertical TLCGD (VTLCGD), was proposed to reduce the excessive vibration on the floor system induced by human walking. The theoretical model of the VTLCGD was first formulated and validated by experimental and numerical analysis considering the pressure–volume relationship. The air spring stiffness and natural frequency of the VTLCGD were derived. The liquid displacement response obtained from the model equation was validated by experimental results derived from the measured pressure. A finite element model of the floor and load model for human walking were established and the vibration reduction of the VTLCGD on the floor was numerically examined. The average vibration reduction rate could reach 43.17% and it showed a linear increase with the increasing mass of unequal liquid height in the vertical tube. An optimization concept and case study were finally proposed to further improve the reduction rate with the limited space, which provides references for the application of the VTLCGD.
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