Locating damaged storeys in a structure based on its identified modal parameters in Cauchy wavelet domain
Sign Up to like & getrecommendations! Published in 2018 at "Applied Mathematical Modelling"
DOI: 10.1016/j.apm.2017.02.006
Abstract: Abstract Structural damage detection based on the changes of dynamic properties is a major topic for structural health monitoring. In this paper, efforts are made to extend the flexibility-based damage localization methods, especially the damage… read more here.
Keywords: identified modal; modal parameters; cauchy wavelet; structure ... See more keywords
Data-driven model updating of an offshore wind jacket substructure
Sign Up to like & getrecommendations! Published in 2020 at "Applied Ocean Research"
DOI: 10.1016/j.apor.2020.102366
Abstract: Abstract The present paper provides a model updating application study concerning the jacket substructure of an offshore wind turbine. The updating is resolved in a sensitivity-based parameter estimation setting, where a cost function expressing the… read more here.
Keywords: model updating; jacket substructure; offshore wind; modal parameters ... See more keywords
Automatic identification of modal parameters for structures based on an uncertainty diagram and a convolutional neural network
Sign Up to like & getrecommendations! Published in 2020 at "Structures"
DOI: 10.1016/j.istruc.2020.08.077
Abstract: Abstract A novel method for automatic identification of structural modal parameters is proposed, based on new developments in both uncertainty quantification for stochastic subspace identification and deep learning. An uncertainty diagram is first constructed to… read more here.
Keywords: uncertainty diagram; uncertainty; automatic identification; modal parameters ... See more keywords
Fisher information-based optimal input locations for modal identification
Sign Up to like & getrecommendations! Published in 2019 at "Journal of Sound and Vibration"
DOI: 10.1016/j.jsv.2019.06.040
Abstract: Abstract A method is proposed to determine optimal locations of input forces for experimental modal analysis. The input locations are optimal in a sense that the measured vibration responses, under inputs thus located, contain maximum… read more here.
Keywords: input; input locations; optimal input; fisher information ... See more keywords
Data-driven experimental modal analysis by Dynamic Mode Decomposition
Sign Up to like & getrecommendations! Published in 2020 at "Journal of Sound and Vibration"
DOI: 10.1016/j.jsv.2020.115434
Abstract: Abstract This paper discusses the application of Dynamic Mode Decomposition (DMD) to the extraction of modal properties of linear mechanical systems, i.e., experimental modal analysis (EMA). First, theoretical background of the DMD is briefly reviewed… read more here.
Keywords: dynamic mode; modal parameters; modal analysis; experimental modal ... See more keywords
Field measurement study on time-varying characteristics of modal parameters of super high-rise buildings during super typhoon
Sign Up to like & getrecommendations! Published in 2020 at "Journal of Wind Engineering and Industrial Aerodynamics"
DOI: 10.1016/j.jweia.2020.104139
Abstract: Abstract This study identifies the modal parameters of four super high-rise buildings in Shenzhen and analyzes the variation of their structural dynamic properties with amplitude and time based on the long-term field data of Super… read more here.
Keywords: wind; typhoon; modal parameters; time ... See more keywords
A robust methodology for modal parameters estimation applied to SHM
Sign Up to like & getrecommendations! Published in 2017 at "Mechanical Systems and Signal Processing"
DOI: 10.1016/j.ymssp.2017.03.021
Abstract: Abstract The subject of structural health monitoring is drawing more and more attention over the last years. Many vibration-based techniques aiming at detecting small structural changes or even damage have been developed or enhanced through… read more here.
Keywords: methodology; methodology modal; step; modal parameters ... See more keywords
An innovative Bayesian system identification method using autoregressive model
Sign Up to like & getrecommendations! Published in 2019 at "Mechanical Systems and Signal Processing"
DOI: 10.1016/j.ymssp.2019.106289
Abstract: Abstract This paper proposes an innovative Bayesian method for system identification based on autoregressive (AR) model. The dynamics of a structure is first modeled by an AR model. Due to measurement noise and modeling errors… read more here.
Keywords: autoregressive model; method; model; system identification ... See more keywords
Localization of impact on box mechanical structure by the method of modal parameters extraction combined with K-means clustering
Sign Up to like & getrecommendations! Published in 2021 at "Inverse Problems in Science and Engineering"
DOI: 10.1080/17415977.2021.1940164
Abstract: In structural health monitoring, the localization of impact is one of the most basic and challenging problems. However, existing technologies are only suitable for obtaining the impact position of plate structures, which hinder their engineering… read more here.
Keywords: means clustering; modal parameters; method; impact ... See more keywords
Investigation of Snow Load Effects on Modal Parameters of a Steel Structure Roof
Sign Up to like & getrecommendations! Published in 2018 at "Shock and Vibration"
DOI: 10.1155/2018/7018325
Abstract: Snowfall is one of the environmental factors that can cause effects on the identification of structural modal parameters. For the steel structure roof of the Harbin Railway Station, effects of snow load to the modal… read more here.
Keywords: snow load; structure roof; modal parameters; steel structure ... See more keywords
A New Experimental Method for the Nonlinear Modal Parameter Identification of a Pressurized Water Reactor Fuel Assembly
Sign Up to like & getrecommendations! Published in 2023 at "Science and Technology of Nuclear Installations"
DOI: 10.1155/2023/8892196
Abstract: Establishing a dynamic model that accurately describes a realistic pressurized water reactor (PWR) fuel assembly is crucial to precisely evaluate the mechanical properties of the fuel assembly in seismic or loss of coolant accidents (LOCAs).… read more here.
Keywords: water reactor; method; fuel assembly; modal parameters ... See more keywords