Estimation of modal parameters for structurally damped systems using wavelet transform

被引：13
作者：
Sarparast, H. [1 ]
Ashory, M. R. [1 ,2 ]
Hajiazizi, M. [3 ]
Afzali, M. [4 ]
Khatibi, M. M. [4 ]
机构：
[1] Semnan Univ, Sch Mech Engn, Semnan, Iran
[2] Univ Tehran, Sch Mech Engn, Tehran, Iran
[3] Semnan Univ, Sch Civil Engn, Semnan, Iran
[4] Islamic Azad Univ, Dept Mech Engn, Semnan Branch, Semnan, Iran
来源：
EUROPEAN JOURNAL OF MECHANICS A-SOLIDS | 2014年 / 47卷
关键词：
Modal parameters; Proportional structural damping; Morlet wavelet; STIFFNESS CHANGE; IDENTIFICATION; SHAPES; MASS;
D O I：
10.1016/j.euromechsol.2014.02.018
中图分类号：
O3 [力学];
学科分类号：
08 ; 0801 ;
摘要：
In this paper, a procedure is presented to determine the modal parameters of a system with proportional structural damping exited by an impact force. A Morlet wavelet transform with an adjusting parameter is used to estimate the natural frequencies and damping factors from free-decay responses of structure. Also a method is used for identification of mode shapes from the estimated natural frequencies of wavelet transform and the free responses of structure. It is shown that the mode shape identification method can average the data in the noisy environments and reduce the effect of noise. A numerical example as well as two experimental case studies on a beam and a trapezoidal concrete plate demonstrates the validity of method. (C) 2014 Elsevier Masson SAS. All rights reserved.
引用
收藏
页码：82 / 91
页数：10
相关论文
共 50 条
  • [21] A state-space methodology to identify modal and physical parameters of non-viscously damped systems
    Reggio, Anna
    De Angelis, Maurizio
    Betti, Raimondo
    MECHANICAL SYSTEMS AND SIGNAL PROCESSING, 2013, 41 (1-2) : 380 - 395
  • [22] Estimation of the Parameters of Exponentially Damped Sinusoidal Signals
    Tung, Nguyen K.
    Vlasov, Sergey M.
    Pyrkin, Anton A.
    Kirsanova, Aleksandra S.
    Korotina, Marina M.
    2022 EUROPEAN CONTROL CONFERENCE (ECC), 2022, : 309 - 314
  • [23] Extraction of Bridge Modal Parameters Using Passing Vehicle Response
    Tan, Chengjun
    Uddin, Nasim
    OBrien, Eugene J.
    McGetrick, Patrick J.
    Kim, Chul-Woo
    JOURNAL OF BRIDGE ENGINEERING, 2019, 24 (09)
  • [24] Estimation of Communications Channels Using Discrete Wavelet Transform-Based Deconvolution
    Vaz, Canute
    Ho, Ka Mun
    Daut, David G.
    Ge, Yao
    IEEE TRANSACTIONS ON COMMUNICATIONS, 2013, 61 (10) : 4186 - 4195
  • [25] Modal Parameters Estimation of Building Structures from Vibration Test Data Using Observability Measurement
    Hwang, Jae-Seung
    Kim, Hongjin
    Cho, Bong-Ho
    SHOCK AND VIBRATION, 2015, 2015
  • [26] Fatigue Data Analysis using Continuous Wavelet Transform and Discrete Wavelet Transform
    Abdullah, S.
    Sahadan, S. N.
    Nuawi, M. Z.
    Nopiah, Z. M.
    FRACTURE AND STRENGTH OF SOLIDS VII, PTS 1 AND 2, 2011, 462-463 : 461 - 466
  • [27] A reduced modal subspace approach for damped stochastic dynamic systems
    Kasinos, S.
    Palmeri, A.
    Lombardo, M.
    Adhikari, S.
    COMPUTERS & STRUCTURES, 2021, 257
  • [28] Estimation of the transition time of hybrid systems by using wavelet analysis
    Kashiwao, Tomoaki
    Ikeda, Kenji
    Shimomura, Takao
    PROCEEDINGS OF SICE ANNUAL CONFERENCE, VOLS 1-8, 2007, : 2537 - 2540
  • [29] On the Identification of Flexible Foundations Using Modal Parameters
    Yu, Minli
    Feng, Ningsheng
    Hahn, Eric
    DYNAMICS FOR SUSTAINABLE ENGINEERING, VOL 2, 2011, : 845 - 853
  • [30] High-order, closely-spaced modal parameter estimation using wavelet analysis
    Le, Thai-Hoa
    Caracoglia, Luca
    STRUCTURAL ENGINEERING AND MECHANICS, 2015, 56 (03) : 423 - 442
12345