Tuned negative stiffness⁃inertia mass damper parameters optimization and seismic response control

被引：0

作者：

Yi J. ^{[1
]}

Xu K. ^{[1
]}

He X.-H. ^{[2
]}

Hua X.-G. ^{[1
]}

Wen Q. ^{[3
]}

Chen Z.-Q. ^{[1
]}

机构：

[1] School of Civil Engineering, Hunan University, Changsha

[2] Shenzhen Municipal Design & Research Institute Co.，Ltd., Shenzhen

[3] School of Civil Engineering, Hunan University of Science and Technology, Xiangtan

来源：

Zhendong Gongcheng Xuebao/Journal of Vibration Engineering | 2024年 / 37卷 / 06期

关键词：

inerter; negative stiffness; parameter optimization; seismic response; tuned mass damper;

D O I：

10.16385/j.cnki.issn.1004-4523.2024.06.012

中图分类号：

学科分类号：

摘要：

This paper proposes a Tuned Negative-stiffness Inerter Mass Damper（TNIMD）to mitigate seismic vibrations in primary structures during earthquake excitation. The equations of motion for the coupled system of the primary structure and TNIMD are obtained using the Lagrange function，and fixed-point theory is applied for optimal design. The impact of negative-stiffness coefficient on control performance is also discussed. Subsequently，a parametric analysis and evaluation of seismic vibration control are conducted. The results indicate that the displacement response of a primary structure equipped with the TNIMD is significantly less than those with a Vibration Tuned Mass Damper with Inerter（VTMDI）without a negative-stiffness spring. Furthermore，the smaller the mass and inertance ratios，the greater the advantages of TNIMD in vibration control，outperforming VTMDI. This confirms the requirement of installation limitations and the selection of a small mass ratio engineering. Additionally，seismic analysis shows the displacement and absolute acceleration of a primary structure equipped with TNIMD are superior to VTMDI under far-field，near field with pulse，and near-field without pulse earthquakes. The theoretical analysis and optimal design presented in this paper are suggested for engineering applications for seismic vibration control using TNIMD. © 2024 Nanjing University of Aeronautics an Astronautics. All rights reserved.

引用

页码：1015 / 1022

页数：7

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