Results 21 to 30 of about 474,164 (345)

Ambient vibration re-testing and operational modal analysis of the Humber Bridge [PDF]

, 2010
An ambient vibration survey of the Humber Bridge was carried out in July 2008 by a combined team from the UK, Portugal and Hong Kong. The exercise had several purposes that included the evaluation of the current technology for instrumentation and system ...
Abdel-Ghaffar, Alvaro Cunha, Andersen, Ashkenazi, Brownjohn, Brownjohn, Brownjohn, Brownjohn, Brownjohn, Carder, Cheli, Cheung, Conte, Cunha, Cunha, Dumanoglu, Dumanoglu, Elsa Caetano, Filipe Magalhaes, Fitzpatrick, Frandsen, Gurney, Hoult, J.M.W. Brownjohn, James, Juang, Kumarasena, Larsen, Littler, Macdonald, Magalhaes, Miyata, Nayeri, Pakzad, Pappa, Pavic, Peeters, Reynders, Siringoringo, Stephen, Van Overschee, Vincent, Wong, Xu   +43 more
core   +3 more sources

Modal parameters identification of bridge by improved stochastic subspace identification method with Grubbs criterion

Measurement + Control, 2021
In the wind tunnel test of a long-span bridge model, to ensure that the dynamic characteristics of the model can satisfy the test design requirements, it is particularly important to accurately identify the modal parameters of the model.
Yulin Zhou, Xulei Jiang, Mingjin Zhang, Jinxiang Zhang, Hao Sun, Xin Li   +5 more
doaj   +1 more source

Structural Modal Parameter Identification Method Based on the Delayed Transfer Rate Function under Periodic Excitations

Mathematics, 2023
The dynamic response transfer rate function (TRF) is increasingly used in the field of structural modal parameter identification because it does not depend on the white noise assumption of the excitation.
Yanxin Xu, Dongjian Zheng, Chenfei Shao, Sen Zheng, Hao Gu   +4 more
doaj   +1 more source

Operational modal analysis using symbolic regression for a nonlinear vibration system

Journal of Low Frequency Noise, Vibration and Active Control, 2021
The existence of nonlinearity is an inevitable frequent occurrence that should be considered to accurately identify the modal parameters of a vibration system using operational modal analysis.
Xuchu Jiang, Feng Jiang
doaj   +1 more source

A Data-Driven System Identification Method for Random Eigenvalue Problem Using Synchrosqueezed Energy and Phase Portrait Analysis

Sensors, 2023
The primary purpose of this research is to evaluate the uncertainty associated with modal parameter estimation for an inverse dynamic problem in which the structural parameters are random. The random nature of the structure’s parameters will be reflected
Swarup Mahato, Arunasis Chakraborty, Paulius Griškevičius   +2 more
doaj   +1 more source

Comparison of Different Independent Component Analysis Algorithms for Output-Only Modal Analysis

Shock and Vibration, 2016
From the principle of independent component analysis (ICA) and the uncertainty of amplitude, order, and number of source signals, this paper expounds the root reasons for modal energy uncertainty, identified order uncertainty, and modal missing in output-
Jianying Wang, Cheng Wang, Tianshu Zhang, Bineng Zhong   +3 more
doaj   +1 more source

Improvement of ITD Algorithm Based on Modal Parameter Identification [PDF]

Jisuanji gongcheng, 2017
The pre-processing and system order determination of Intrinsic Time-scale Decomposition(ITD) algorithm involve some human factors,which causes error on extraction of modal parameters,and ITD algorithm is also sensitive to noise.To solve these problems,an
LI Yugang,YE Qingwei,ZHOU Yu,WANG Xiaodong
doaj   +1 more source

Modal identification of cylindrical shell using circumference reduction method

Nihon Kikai Gakkai ronbunshu, 2015
For precision improvement of the noise prediction, the dynamic characteristics of structures need to be verified. This paper focuses on modal identification of the cylindrical shell structures.
Atsushi KITAHARA, Takuya YOSHIMURA
doaj   +1 more source

Modal parameter identification of a MEMS gyroscope [PDF]

Proceedings of the 2000 American Control Conference. ACC (IEEE Cat. No.00CH36334), 2000
This paper reports the experimental system identification of the Jet Propulsion Laboratory microelectromechanical (MEMS) vibrational rate gyroscope. A high-order two-input/two-output transfer function for the microgyroscope is identified and mapped to a three-mode rigid plate model that reveals the orientation of important vibrational modes.
M'Closkey, RT, Gibson, S, Hui, J
openaire   +2 more sources

Reliability pointers for modal parameter identification of grandstand terraces [PDF]

, 2012
The reinforced concrete terrace units were positioned and tested on a specially manufactured steel frame resting on the strong floor in the Civil Engineering laboratories at Coventry University.
Karadelis, John N.
core   +1 more source