Results 11 to 20 of about 21,974 (265)
Damage Identification And Quantification Of Structures By Vibration-Based Model Updating Method Using Teaching-Learning-Based Optimization [PDF]
مهندسی عمران شریف, 2021 Engineering structures are prone to damage over their service life as a result of natural disaster so that damage spreading may lead to many casualties. In order to prevent these catastrophic events, early damage detection must be carried out.
A. Kaveh, S.M. Hosseini, F. Barzinpour
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A new index for damage identification in beam structures based on modal parameters [PDF]
Archive of Mechanical Engineering, 2021 The structural damages can lead to structural failure if they are not identified at early stages. Different methods for detecting and locating the damages in structures have been always appealing to designers in the field.
Reza Taghipour +3 more
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Automation of Experimental Modal Analysis Using Bayesian Optimization
Applied Sciences, 2023 The dynamic characterization of structures by means of modal parameters offers many valuable insights into the vibrational behavior of these structures. However, modal parameter estimation has traditionally required expert knowledge and cumbersome manual
Johannes Ellinger +4 more
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Sensitivity Analysis of Modal Parameters of a Jacket Offshore Wind Turbine to Operational Conditions
Journal of Marine Science and Engineering, 2023 Accurate estimation of offshore wind turbine (OWT) modal parameters has a prominent effect on the design loads, lifetime prediction, and dynamic response of the system. Modal parameters can vary during the operation of OWTs.
Nasim Partovi-Mehr +5 more
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Modal Parameter Tracking in a Carbon Fiber-Reinforced Structure over Different Carbon Fiber Angles
Journal of Marine Science and Engineering, 2021 The dynamics of carbon fiber-reinforced plastic (CFRP) change according to the carbon fiber angle, and a mode order shift may occur in CFRP specimens. The variation trends in modal parameters differ in each mode; thus, an efficient mode-tracking method ...
Chan-Jung Kim
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Uncertainties on modal parameters by operational modal analysis [PDF]
Mechanics & Industry, 2014 Lorsqu’on fait une analyse modale opérationnelle sur des structures en fonctionnement, sans connaître les forces de perturbation, ni le nombre de fréquences importantes qui excitent le système mécanique, on doit se poser la question sur la validité de l’estimation des paramètres modaux (notamment le taux d’amortissement) et sur la précision des ...
Vu, Viet-Hung, Thomas, Marc
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Applied Mechanics, 2022 Modal parameter identification can be a valuable tool in mechanical engineering to predict vibrational behaviour and avoid machine damage during operation.
Mona Amer +2 more
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Parameter Identification of Bladed Assemblies Using a Subspace Method [PDF]
International Journal for Simulation and Multidisciplinary Design Optimization, 2008 This paper is aimed at identifying a dynamical model for bladed assemblies such as turbines. Unknown excitation forces are applied to bladed disk assemblies leading to forced vibration responses.
Salhi Bendali +2 more
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Applied Sciences, 2022 In order to obtain better vibration response data and improve the accuracy of results in large-span steel beam modal tests, this paper proposes an optimization strategy for the arrangement of measurement points on large-span steel beams.
Jian Zhao +4 more
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A novel method for identification of damage location in frame structures using a modal parameters-based indicator [PDF]
Archives of Civil Engineering, 2022 Diverse strategies for identifying and finding the damages in structures have been continuously engaging to originators within the field. Due to the direct connection between the firmness, characteristic frequency, and mode shapes within the structure ...
Mina Roodgar Nashta +3 more
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