Results 1 to 10 of about 39,844 (267)

Modal Complexity Factors as indexes for modal parameter identification in Operational Modal Analysis of coupled dynamic systems

Journal of Sound and Vibration
This work has been supported by the Government of Navarre under grant of Research and Development projects 0011-1365-2021-000080 and 0011-1365-2024-000097.
J. Ibarrola-Chamizo, I. Agirre-Olabide, M. Merino, J. Aginaga   +3 more
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Research of the Operational Modal Parameter Identification Technology and Application based on QICA

Jixie chuandong, 2015
Aiming at the major difficulties of OMA method based on vibration signals such as low noise-robust ability,high subjective experience and poor accuracy in identifying parameters and more complex recognition method,a new method of OMA on the basis of QICA
Zhang Rui, He Changde, Huang Jinying, Zhang Yongmei, Xue Chenyang, Zhang Wendong   +5 more
doaj  

Modal Analysis of Gearbox based on the Method of ERA

Jixie chuandong, 2015
Based on the method of ERA,a system of modal analysis is built,the model of HW25505 TCL gearbox is set up under the Coinv DASP MAS modal analysis module.The relating modal datum are obtained by hammering test of single-input multi- output analysis method,
Zhang Lin, Ma Weijin, Huang Bincheng, Ge Yumin, Wen Fang   +4 more
doaj  

Modal parameters estimation in the Z-domain

Mechanical Systems and Signal Processing, 2009
This paper aims to explain in a clear, plain and detailed way a modal parameter estimation method in the frequency domain, or similarly in the Z-domain, valid for multi degrees-of-freedom systems. The technique is based on the rational fraction polynomials (RFP) representation of the frequency-response function (FRF) of a single input single output ...
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Modal parameter identification for a roof overflow powerhouse under ambient excitation

Water Science and Engineering, 2016
Modal parameter identification is a core issue in health monitoring and damage detection for hydraulic structures. For a roof overflow hydropower station with a bulb tubular unit under ambient excitation, a complex unit-powerhouse-dam coupling vibration ...
Yan Zhang, Ji-jian Lian, Fang Liu
doaj  

Variance evaluation of modal parameters identified by experimental modal analysis and optimization of accuracy of the modal parameters based on the variances.

TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series C, 1988
AZEGAMI, Hideyuki, OKITSU, Akiyoshi, NODA, Eiichi, KOBAYASHI, Hidetaka   +3 more
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Automatic extraction method of modal parameters in modal analysis.

Journal of the Japan Society for Precision Engineering, 1989
OKUBO, Nobuyuki, TAKAYAMA, Koichi
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Intelligent Modal Analysis System: Autonomous Identification and Tracking of Aircraft Modal Parameters [PDF]

Efficient aircraft design necessitates lightweight constructions. However, this leads to aeroelastic challenges concerning loads and vibrations. One example is an unstable, self-excited vibration called flutter, which can result in structural failure. Flutter results from a coupling of one or more structural dynamic modes of the aircraft structure and ...
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基于PolyMAX法的齿轮箱试验模态分析

Jixie chuandong, 2013
Based on the method of PolyMAX,a system of modal analysis is built,the model of JZQ-250 gear-box is set up under the LMS modal analysis module.The relating modal datum are obtained by hammering test of single-input multi-output analysis method,then the ...
王佳, 潘宏侠, 杨晓波
doaj  

Automatic Modal Parameter Identification for Offshore Wind Turbines Using Modified Clustering-Based Methodology. [PDF]

Sensors (Basel)
Yang Y, Liang F, Zhu Q, Zhang H.
europepmc   +1 more source