Results 1 to 10 of about 474,164 (345)

Operational modal analysis with non stationnary inputs [PDF]

, 2013
Operational modal analysis (OMA) techniques enable the use of in-situ and uncontrolled vibrations to be used to lead modal analysis of structures. In reality operational vibrations are a combination of numerous excitations sources that are much more ...
Coulange, Baptiste, Gouache, Thibault, Michon, Guilhem, Morlier, Joseph   +3 more
core   +1 more source

Basic research on design analysis methods for rotorcraft vibrations [PDF]

The objective of the present work was to develop a method for identifying physically plausible finite element system models of airframe structures from test data.
Hanagud, S.
core   +1 more source

Identification of modal parameters for complex structures by experimental modal analysis approach

Advances in Mechanical Engineering, 2016
In this research, we have proposed a methodology for experimental identification of modal parameters based on measurement of the frequency responses of structures with complex geometries and performed an overall investigation of structural behavior on a ...
Tamara Nestorović, Miroslav Trajkov, Matthias Patalong   +2 more
doaj   +1 more source

Modal Parameter Identification of Jacket-Type Offshore Wind Turbines Under Operating Conditions

Journal of Marine Science and Engineering
Operational modal analysis (OMA) is essential for long-term health monitoring of offshore wind turbines (OWTs), helping identifying changes in structural dynamic characteristics.
Chen Zhang, Xu Han, Chunhao Li, Bernt Johan Leira, Svein Sævik, Dongzhe Lu, Wei Shi, Xin Li   +7 more
doaj   +1 more source

Active Vibration Control of Structures using an Impedance Matching Control Technique [PDF]

, 2005
Active vibration control of structures has gained a lot of interest in recent years. This paper presents an active vibration control methodology of a structure using piezoelectric actuators.
Kamath, GM, Kumar, Senthil P, Paul, Subin, Rajnish, G, Savitha, C. M   +4 more
core   +1 more source

Damage Detection of Structural Systems with Noisy Incomplete Input and Response Measurements [PDF]

, 2002
A probabilistic approach for damage detection is presented using noisy incomplete input and response measurements that is an extension of a Bayesian system identification approach developed by the authors. This situation may be encountered, for example,
Beck, James L., Katafygiotis, Lambros S., Yuen, Ka-Veng   +2 more
core  

Modal Parameter Identification of Electric Spindles Based on Covariance-Driven Stochastic Subspace

Machines
Electric spindles are a critical component of numerically controlled machine tools that directly affect machining precision and efficiency. The accurate identification of the modal parameters of an electric spindle is essential for optimizing design ...
Wenhong Zhou, Liuzhou Zhong, Weimin Kang, Yuetong Xu, Congcong Luan, Jianzhong Fu   +5 more
doaj   +1 more source

State of the Art in Automated Operational Modal Identification: Algorithms, Applications, and Future Perspectives

Machines
This paper presents a comprehensive review of automated modal identification techniques, focusing on various established and emerging methods, particularly Stochastic Subspace Identification (SSI).
Hasan Mostafaei, Mahdi Ghamami
doaj   +1 more source

Research on railway vehicle modal parameter identification method based on drop impact load

Journal of Low Frequency Noise, Vibration and Active Control
This paper investigates the modal parameter identification technique utilizing a drop impact load. A 12-DOF mathematical model of a Railway Vehicle System (RWVS) was constructed, followed by theoretical calculations, simulation analysis, and tests with ...
Xiaolong He, Zhengyong Duan, Yangjun Wu, Dayong Tang, Shuai Peng, Bangbei Tang   +5 more
doaj   +1 more source

Research on dynamic characteristics of wind turbine hybrid towers under environmental influences based on operational modal identification and refined finite element simulation

Frontiers in Built Environment
As hybrid towers of wind turbines have gradually become the mainstream structural configuration for high-power wind turbines, their structural safety and long-term reliability have increasingly become critical issues.
Kankan Xing, Zhenli Zhang, Shengbo Tang, Weitao Jiang, Weitao Jiang, Giuseppe Lacidogna, Jie Xu   +6 more
doaj   +1 more source