Results 11 to 20 of about 388,849 (304)
Dynamic Scaling of a Wing Structure Model Using Topology Optimization
Machines, 2022 In this paper, a dynamic scaling methodology is introduced to devise reduced scaled models of aircraft with the objectives of minimizing the development cost and exploring the design space.
Éder Oliveira +4 more
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Eng, 2023 Structural health monitoring (SHM) is crucial for ensuring the safety and performance of offshore platforms. SHM uses advanced sensor systems to detect and respond to negative changes in structures, improving their reliability and extending their life ...
Marzieh Zamani Kouhpangi +2 more
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Sensors, 2021 An experimental proof-of-concept for damage detection in composite beams using modal analysis has been conducted. The purpose was to demonstrate that damage features can be detected, located, and measured on the surface of a relatively complex thin-wall ...
Josué Pacheco-Chérrez +2 more
doaj +1 more source
Expressiveness and Completeness in Abstraction [PDF]
, 2012 We study two notions of expressiveness, which have appeared in abstraction theory for model checking, and find them incomparable in general. In particular, we show that according to the most widely used notion, the class of Kripke Modal Transition ...
Bas Luttik +22 more
core +5 more sources
Effect of Vinyl Flooring on the Modal Properties of a Steel Footbridge [PDF]
, 2019 Damping ratios associated with non structural elements play an important role in mitigating the pedestrian-induced vibrations of slender footbridges.
Hernández Díaz, Alejandro Mateo +3 more
core +1 more source
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
openaire +2 more sources
A New Maximum Likelihood Estimator Formulated in Pole-Residue Modal Model
Applied Sciences, 2019 Recently, a lot of efforts have been devoted to developing more precise Modal Parameter Estimation (MPE) techniques. This is explained by the necessity in civil, mechanical and aerospace engineering of obtaining accurate estimates for the modal ...
Sandro Amador +3 more
doaj +1 more source
Damage localization using experimental modal parameters and topology optimization [PDF]
, 2010 This work focuses on the developement of a damage detection and localization tool using the Topology Optimization feature of MSC.Nastran. This approach is based on the correlation of a local stiness loss and the change in modal parameters due to damages ...
Gourinat, Yves +3 more
core +4 more sources
Modal control based on direct modal parameters estimation [PDF]
Journal of Vibration and Control, 2017 Modal active control is based on a state model that requires the identification of modal parameters. This identification can typically be done through a rational fraction polynomial algorithm applied in the frequency domain. This method generates numerical problems when estimating high-order models, particularly when moving from the basis of ...
Chomette, Baptiste, Mamou-Mani, Adrien
openaire +2 more sources
Some issues when using Fourier analysis for the extraction of modal parameters [PDF]
, 2009 It is sometimes necessary to determine the manner in which structures deteriorate with respect to time; for instance when quantifying a material's ability to withstand sustained dynamic loads. In such cases, it is well established that loss of structural
Andreas +14 more
core +1 more source