[1] Ji Xiaodong, Cheng Yuhao, Jia Ruofan, Yu Yue, et al. Dynamic testing and parameter identification for tuned viscous mass dampers [J]. Journal of Southeast University (English Edition), 2024, 40 (2): 111-119. [doi:10.3969/j.issn.1003-7985.2024.02.001]

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Dynamic testing and parameter identification for tuned viscous mass dampers()

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Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]

Volumn:

40

Issue:

2024 2

Page:

111-119

Research Field:

Civil Engineering

Publishing date:

2024-06-13

Info

Title:

Dynamic testing and parameter identification for tuned viscous mass dampers

Author(s):

Ji Xiaodong;  Cheng Yuhao;  Jia Ruofan;  Yu Yue

Key Laboratory of Civil Engineering Safety and Durability of Ministry of Education, Tsinghua University, Beijing 100084, China

Keywords:

tuned viscous mass damper(TVMD);  dynamic test;  parameter identification;  damping nonlinearity;  vibration control

PACS:

TU398.9

DOI:

10.3969/j.issn.1003-7985.2024.02.001

Abstract:

A novel type of tuned viscous mass damper(TVMD)device incorporating eddy current damping and metal springs as its damping and spring elements, respectively, was developed. First, dynamic tests of the TVMDs were conducted to investigate their dynamic characteristics. Subsequently, four methods were proposed to identify the TVMD parameters from the test data: the peak point fitting method, hysteretic curve fitting method, time-history fitting method, and transfer function fitting method. The dynamic test results indicate that the TVMD exhibits the inertial mass amplification and damping enhancement effects. The spring and inerter elements demonstrate ideal linear behavior, while the damping element exhibits nonlinearity, primarily owing to the nature of eddy current damping and inherent friction in the TVMD device. The parameter identification results indicate that all four methods can reasonably determine the TVMD parameters. The transfer function fitting method can provide an equivalent damping coefficient useful for tuning design, while the other three methods can identify parameters of nonlinear damping models. The hysteretic curve fitting and time-history fitting methods exhibit improved accuracy in parameter identification, while the peak point fitting and transfer function fitting methods exhibit higher computational efficiency.

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Memo

Memo:

Biography: Ji Xiaodong(1979—), male, doctor, associate professor, jixd@mail.tsinghua.edu.cn.
Foundation items: The National Natural Science Foundation of China(No. 52078277), Foundation of the Institute for Guoqiang of Tsinghua University(No. 2020GQC0003).
Citation: Ji Xiaodong, Cheng Yuhao, Jia Ruofan, et al. Dynamic testing and parameter identification for tuned viscous mass dampers[J].Journal of Southeast University(English Edition), 2024, 40(2):111-119.DOI:10.3969/j.issn.1003-7985.2024.02.001.

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