The Adaptive Pendulum-type Tuned Mass Damper and Numerical Simulation of Its Effect on Controlling Vibration

王梁坤; 施卫星; 鲁正

doi:10.13409/j.cnki.jdpme.2018.04.013

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The Adaptive Pendulum-type Tuned Mass Damper and Numerical Simulation of Its Effect on Controlling Vibration

更新时间：2025-12-11

- The Adaptive Pendulum-type Tuned Mass Damper and Numerical Simulation of Its Effect on Controlling Vibration
- Vol. 38, Issue 4, Pages: 693-699(2018)
- 作者机构：
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- DOI：10.13409/j.cnki.jdpme.2018.04.013
  CLC： U352.1
- Published：2018
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[1]王梁坤,施卫星,鲁正.自适应单摆式TMD及其减振效果的数值模拟[J].防灾减灾工程学报,2018,38(04):693-699.

王梁坤, 施卫星, 鲁正. The Adaptive Pendulum-type Tuned Mass Damper and Numerical Simulation of Its Effect on Controlling Vibration[J]. 2018, 38(4): 693-699.
[1]王梁坤,施卫星,鲁正.自适应单摆式TMD及其减振效果的数值模拟[J].防灾减灾工程学报,2018,38(04):693-699. DOI： 10.13409/j.cnki.jdpme.2018.04.013.

王梁坤, 施卫星, 鲁正. The Adaptive Pendulum-type Tuned Mass Damper and Numerical Simulation of Its Effect on Controlling Vibration[J]. 2018, 38(4): 693-699. DOI： 10.13409/j.cnki.jdpme.2018.04.013.

摘要

当单摆式调谐质量阻尼器（PT MD）的频率调谐至与结构的自振频率一致时

PT MD有良好的减振效果。由于结构的设计频率与实际频率之间的偏差和结构在使用过程中发生的损伤累积等

结构的自振频率可能会偏离PTMD的控制频率

降低PTMD的减振效果。为了改善传统PTMD对频率调谐敏感的缺陷

提出的自适应单摆式TMD基于PTMD频率仅与摆长有关的特点

利用短时傅里叶变换和环境激励法识别出结构的自振频率

然后自发地启动步进电机改变摆长

以调节PTMD频率与结构频率相同。介绍了一种自适应单摆式TMD的模型装置

并用数值模拟对比了其在各种激励作用下的结构响应。结果表明

自适应单摆式TMD对结构的频率识别精度高

能够提高结构的等效阻尼比

降低结构的加速度响应。自适应单摆式TMD能够提高PTMD的减振效果

提高结构的安全性和耐久性

延长结构的使用寿命

且构造简单、需电量小

具有较好的工程应用前景。

Abstract

When the natural frequency of pendulum-type tuned mass damper（PTMD） is consistent with that of the main structure

the vibration can be controlled effectively. Because the engineering structural design frequency may be different from the actual frequency

together with the accumulated damage during operation

the actual natural frequency of the main structure will deviate from that of the PTMD

hence greatly reducing the effect of PTMD on controlling vibration. In order to overcome the deficiency of traditional PTMDs

an adaptive PTMD device is proposed in this paper on the basis that the frequency of PTMD is only related to the pendulum length. Short-time fourier transform and natural excitation method are used to identify the natural frequency of the main structure

and then

the step motor initiates spontaneously to change the pendulum length to adjust its frequency to match the main structural frequency. This paper proposes a test apparatus of adaptive PTMD

and simulates its structural responses under different excitations. The results show that the adaptive PTMD can precisely identify the structural frequency

and it can improve the structural equivalent damping ratio and reduce the structural acceleration response. Adaptive PTMD can improve the vibration control effect of PTMD

improve the safety and durability of a structure

and extend its service life. Moreover

it is simple and energy efficient. Therefore

adaptive PTMDs have a bright prospect in engineering applications.

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references

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